Scandinavian Cardiovascular Journal

Scandinavian Cardiovascular Journal

Published by Taylor & Francis

Online ISSN: 1651-2006

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Print ISSN: 1401-7431

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Top-read articles

17 reads in the past 30 days

Oxygen consumption at anaerobic threshold (V̇O2 at AT), peak cardiac index and peak stroke volume in people with history of COVID-19 and non-COVID-19. Mean values are shown by solid balck lines.
V̇O2: Oxygen consumption; AT: anaerobic threshold.
The effect of COVID-19 on cardiovascular function and exercise tolerance in healthy middle-age and older individuals

February 2025

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31 Reads

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Djordje G. Jakovljevic
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Aims and scope


Addresses interventional and non-invasive cardiology, cardiovascular epidemiology, anesthesia, surgery, radiology, and thoracic organ transplantation.

  • Please note, from 2022 the Print ISSN is not in active use as this journal is no longer published in print.
  • The principal aim of Scandinavian Cardiovascular Journal is to promote cardiovascular research that crosses the borders between disciplines.
  • The journal is a forum for the entire field of cardiovascular research, basic and clinical including: Cardiology - Interventional and non-invasive, Cardiovascular epidemiology, Cardiovascular anaesthesia and intensive care, Cardiovascular surgery, Cardiovascular radiology, Clinical physiology, Transplantation of thoracic organs.
  • Scandinavian Cardiovascular Journal is the official journal of the Swedish Heart Association, the Swedish Association for Thoracic Surgery and the Norwegian Cardiothoracic Surgery Society.
  • The editorial base of the journal is Scandinavian; however both readership and contributors are truly international.
  • Read the Instructions for Authors for information on how to submit your article and …

For a full list of the subject areas this journal covers, please visit the journal website.

Recent articles


Kaplan–Meier’s estimates of survival after heart transplantation. The red line depicts patients with SPS, and the blue line depicts patients without SPS. Faded area represents 95% CI. (A) SPS diagnosed 1 week postoperatively, (B) 2 weeks postoperatively, (C) 3 weeks postoperatively, and (D) 4 weeks postoperatively. SPS: shrunken pore syndrome.
Shrunken pore syndrome in heart transplantation: a pore ready to close?
  • Article
  • Full-text available

March 2025

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3 Reads

Background: A newly discovered renal syndrome, shrunken pore syndrome (SPS), has been shown to increase mortality regardless of renal function. SPS is defined as an estimated glomerular filtration rate (eGFR) of cystatin C ≤ 60% than eGFRcreatinine. We set out to study SPS in relation to the survival of heart transplantation patients with a follow-up of up to 12 years. Methods. This was a single-center cohort study including 253 consecutive patients undergoing heart transplantation. The prevalence of SPS at different time points post-transplantation and its effect on survival was evaluated using Kaplan–Meier’s analysis and multivariable Cox proportional hazards regression. Results. The prevalence of SPS was 7.5% the day after transplantation (D1), which rose to 71% week 4 after surgery. There was no difference in survival for patients with SPS D1 compared to patients without SPS D1. Patients with SPS 4 weeks compared to patients without SPS 4 weeks after transplantation showed a 5- and 10-year survival of 73% vs. 93% (p = .02) and 63% vs. 90% (p = .005), respectively. SPS developed during the postoperative period was also found to be an independent predictor of mortality (HR 4.65; 95% CI 1.36–15.8). Discussion. SPS that developed in the postoperative course after heart transplantation was found to be an independent predictor of mortality with a severe negative impact on 5- and 10-year survival.




Study population.
Five-year all-cause mortality by pacemaker −/+.
Predictors of permanent pacemaker implantation after transcatheter aortic valve implantation

March 2025

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10 Reads

Purpose. Transcatheter aortic valve implantation (TAVI) is increasingly performed in patients with longer life expectancies. The need for permanent pacemaker implantation (PPI) following TAVI has been associated with increased all-cause mortality and morbidity. This study aimed to identify ECG, CT, and procedural predictors of PPI following TAVI. Methods. We conducted a retrospective observational study at the University Hospital of North Norway. Patients who underwent TAVI with SAPIEN 3 or SAPIEN 3 Ultra valves were included, while those with prior pacemakers, self-expanding valves, or valve-in-valve procedures were excluded. Data were collected from medical records, pre-operative CT scans, and procedural angiography. Results. A total of 416 low- to intermediate-risk patients with a median age of 82 years were included. Of these, 64 patients (15.4%) required PPI within ≤30 days following the index procedure. Multivariable regression analysis identified the following predictors for PPI: pre-existing right bundle branch block (odds ratio (OR), 10.7; 95% CI, 4.74–24.3), first-degree atrioventricular block (OR, 2.62; 95% CI, 1.08–6.32), membranous septum length (OR, 0.77; 95% CI, 0.65–0.90), left ventricular outflow tract calcification (OR, 2.18; 95% CI, 1.12–4.27), and the use of 29 mm valves (OR, 2.33; 95% CI, 1.09–4.97). Conclusions. Our study found the following predictors of PPI following TAVI: pre-existing right bundle branch block, first-degree atrioventricular block, the use of 29 mm valves and the presence of left ventricular outflow tract calcification. Additionally, a short MS was found to increase the chance of PPI; therefore, MS measurements should be included in pre-operative assessments to identify at-risk patients.


Forearm blood flow responses during co-infusion of leptin.
Infused (continuous) and non-infused (dashed) forearm blood flow during incremental doses of bradykinin, acetylcholine, sodium nitroprusside and verapamil with co-infusion of leptin (●) and saline (○). Values shown are means ± SEM.
Dose response for all vasodilators (linear mixed model, p < 0.001), bradykinin (ANOVA, p = 0.07) leptin (●) versus saline (○), acetylcholine (ANOVA, p = 0.64) leptin (●) versus saline (○), sodium nitroprusside (ANOVA, p = 0.009) leptin (●) versus saline (○), and verapamil (ANOVA, p = 0.03) leptin (●) versus saline (○).
Forearm blood flow responses across leptin tertiles.
Infused (continuous) and non-infused (dashed) forearm blood flow during incremental doses of acetylcholine (top), substance P (middle) and sodium nitroprusside (bottom) for the highest (●), middle (x), and lowest (○), tertiles of plasma leptin. Values shown are means ± SEM.
*p = 0.004, ANOVA (●) versus (○), †p < 0.001, ANOVA (●) versus (○), and ‡p = 0.02, ANOVA (●) versus (○).
Net t-PA release across leptin tertiles.
Estimated net release of tissue plasminogen activator (tPA) antigen (left), and tPA activity (right), for the highest (●), middle (x), and lowest (○), tertiles of plasma leptin. p < 0.001, dose response for substance P. Values shown are means ± SEM.
*p < 0.001, ANOVA (●) versus (○), and †p = 0.03, ANOVA (●) versus (○).
Vasomotor and fibrinolytic effects of leptin in man

March 2025

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6 Reads

Objectives The adipocyte-derived hormone leptin has been associated with the pathogenesis of cardiovascular disease. The mechanisms underlying this association are unclear but may relate to effects on the vascular endothelium. Our aim was to explore the effects of leptin on endothelial vasomotor and fibrinolytic function in healthy volunteers and patients with coronary artery disease. Design The vascular effects of leptin were assessed infusing recombinant human leptin in healthy volunteers during measuring vasomotor response by venous occlusion plethysmography. Additionally, circulating levels of leptin were analysed in relation to endothelial dysfunction in patients with established coronary artery disease. Results In healthy male volunteers, intra-arterial infusion of recombinant human leptin (80, 800 and 8,000 ng/min; n = 10) did not affect basal forearm blood flow, plasma tissue plasminogen activator (tPA) or plasminogen activator inhibitor type 1 concentrations (all p > 0.05). However, during concomitant co-infusion with leptin (800 ng/min; n = 10), drug-induced vasodilatation was reduced (p = 0.001), and tPA activity increased (p = 0.002). In patients with coronary artery disease, those with the high plasma leptin levels had reduced drug-induced vasodilatation (p < 0.001), and increased net release of tPA antigen and activity (p < 0.001 and p = 0.03, respectively) compared to those with low levels. The study has been registered retrospectively at Clinical Trials with number NCT04374500. Conclusion Intrabrachial leptin infusion did not affect the basal vascular tone, whereas acute and chronic hyperleptinemia was associated with blunted vasoreactivity in healthy volunteers, and in patients with coronary artery disease.


An overview of the SWEDEHEART-CR follow-up visits and time for data-collection in current study. PT: physiotherapist.
Flowchart of eligible and included participants. ¹Individuals with recent acute coronary syndrome (ICD codes I20, I21, I22), <80 years old who attended SWEDEHEART-CR visit 1. ²Individuals who had participated ≥80% of physiotherapist led sessions in a 3-months exCR program.
Physical activity levels and associated biopsychosocial characteristics among attendees to exercise-based cardiac rehabilitation

March 2025

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12 Reads

Aim. Exercise-based cardiac rehabilitation (exCR) reduces morbidity and mortality after acute coronary syndrome (ACS). Little is known about physical activity (PA) levels at exCR program completion and associated demographic, medical, and psychosocial factors. Methods. Cross-sectional data from the ongoing Keep-Up-Going study were used, including 100 participants with recent ACS and ≥80% attendance to 3 months supervised exCR program. Physical activity was assessed by an accelerometer and self-reported psychosocial characteristics were collected at the end of the exCR. Associations between achieving the PA target (>150 min of moderate-to-vigorous-intensity PA/week) and biopsychosocial characteristics were assessed using univariable logistic regression analyses. Results. Mean age was 67 years and 24% were women. Participants achieving the PA target (76%) were more likely to have higher levels of social support, higher outcome expectations for PA, and higher intrinsic regulation (motivation, p < .05 for all). Those not achieving the PA target (24%) had a higher proportion of sedentary time, fewer steps/day, and were more likely to be older, retired, and have reduced left ventricular ejection fraction (LVEF) (p < .05 for all). Conclusions. Although exCR participation provides exercise routines, one-fourth of individuals did not reach the guideline-directed PA targets after an ACS. In addition to higher age and reduced LVEF, lower levels of social support, outcome expectations, and motivation were associated with low levels of PA. Exploring these factors could be of importance to support individuals’ behavior change toward increased PA during the exCR period.


Oxygen consumption at anaerobic threshold (V̇O2 at AT), peak cardiac index and peak stroke volume in people with history of COVID-19 and non-COVID-19. Mean values are shown by solid balck lines.
V̇O2: Oxygen consumption; AT: anaerobic threshold.
The effect of COVID-19 on cardiovascular function and exercise tolerance in healthy middle-age and older individuals

February 2025

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31 Reads

Aims Coronavirus disease (COVID-19) can affect cardiovascular function in health and disease. The present study assessed the effect of prior COVID-19 infection on cardiovascular phenotype at rest and in response to exercise in middle age and older individuals. Methods This case-control, single-centre study recruited 124 participants: 84 with a history of COVID-19 (59.9 ± 7.41 years, 54.8% female) and 40 participants without history of COVID-19 infection (62.8 ± 7.14 years, 62.5% female). All participants underwent non-invasive assessment of arterial function using pulse wave velocity (PWV), augmentation index (Alx) and hemodynamic function (i.e. cardiac index (CI), stroke volume index (SVI), heart rate (HR), mean arterial blood pressure (MAP)) at rest. Cardiopulmonary exercise stress testing with simultaneous gas exchange and hemodynamic (bioreactance) measurements was also performed. Results There were no differences between COVID-19 and non-COVID-19 groups in PWV (COVID-19: 7.52 ± 1.66 m/s, non-COVID-19: 7.32 ± 1.79 m/s, p = 0.440); Alx (COVID-19: 29.2 ± 9.12%, non-COVID-19: 29.2 ± 8.44%, p = 0.980); CI (COVID-19: 2.85 ± 0.39 L/min/m², non-COVID-19: 2.79 ± 0.37 L/min/m², p = 0.407); SVI (COVID-19: 46.5 ± 7.54 mL/m², non-COVID-19: 47.0 ± 7.59 mL/m², p = 0.776), HR (COVID-19: 62.3 ± 10.6 beats/min, Non-COVID-19: 60.2 ± 8.52 beats/min, p = 0.263), or MAP (COVID-19: 98.1 ± 11.2 mmHg, non-COVID-19: 96.6 ± 9.46 mmHg, p = 0.464). COVID-19 participants however demonstrated lower O2 consumption at anaerobic threshold (15.5 ± 4.25 vs 16.8 ± 4.51 mL/kg/m², p = 0.034), peak cardiac index (10.4 ± 2.3 vs 11.3 ± 2.5 L/min/m², p = 0.040) and peak stroke volume index (82.1 ± 25.3 vs 98.6 ± 37.6 mL/m², p = 0.028). Conclusion Healthy middle-age and older individuals with history COVID-19 infection demonstrate reduced exercise tolerance and cardiac function response to exercise.


The use of (a) class I and III antiarrhythmic drugs, (b) flecainide, (c) disopyramide, propafenone and quinidine 2007–2018.
The use of (a) beta-blockers, (b) calcium channel blockers, (c) digoxin, and (d) renin–angiotensin–aldosterone–system inhibitors 2007–2018.
The use of (a) beta-blockers, (b) calcium channel blockers, (c) digoxin, and (d) renin–angiotensin–aldosterone–system inhibitors 2007–2018.
The use of class III antiarrhythmic drugs.
The use of antiarrhythmic drugs for atrial fibrillation in Finland 2007–2018

February 2025

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25 Reads

Background Patients with atrial fibrillation (AF) are often treated with antiarrhythmic drugs (AADs) to maintain sinus rhythm and with heart rate-lowering drugs to achieve the optimal rate control. In this study, we investigated trends in the use of AADs and rate control drugs in Finnish patients with AF. Methods and results The Finnish AntiCoagulation in Atrial Fibrillation (FinACAF) study is a nationwide study including all patients with AF in Finland from 2007 to 2018. The number of AAD purchases and the proportions of all prevalent AF patients in a certain year of interest were calculated. In total, 391030 AF patients were identified between 2007 and 2018, and 39,816 (10.2%) of them had purchased either class I or III AADs. The proportion of patients using classes I and III AADs decreased from 8.6% to 6.3%. Flecainide and amiodarone were the most often used AADs. The use of flecainide and amiodarone decreased from 4.9% to 3.9% and 1.9% to 1.5%, respectively. The proportion of patients on beta-blockers remained stable at 75%. Dronedarone became available in 2011 when it also was the most used (0.8% of patients), but the use decreased thereafter. The use of sotalol and digoxin decreased from 1.5% to 0.6% and 24.6% to 11.0% over the study period. Conclusion The number of AAD purchases increased alongside with the increasing prevalence of AF, whereas the proportion of AF patients on classes I and III AADs and digoxin decreased between 2007 and 2018. Flecainide remained the most used AAD followed by amiodarone.


Univariate logistic analysis of 210 IE patients.
Multivariate logistic analysis of 210 IE patients.
Univariate Cox analysis of 210 IE patients.
Multivariate Cox analysis of 210 IE patients.
Cumulative survival analysis graphs for “surgery” and “NYHA”.
Multivariate and survival analysis of prognosis and surgical benefits in infective endocarditis

December 2024

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5 Reads

Background. Antibiotic therapy is the primary treatment for infective endocarditis (IE), yet up to 50% of patients still require surgical intervention. However, surgical intervention carries significant risks of mortality and complications for IE patients, and there remains a lack of consensus on which preoperative characteristics of infective endocarditis have a substantial impact on patient prognosis. Particularly, some IE patients develop periannular abscesses, leading to more severe complications. Objectives. The objective of our study is to identify predictors of poor outcomes in infective endocarditis and to further evaluate the impact of surgical intervention on patient prognosis, with the aim of adding value to the existing factors known to affect IE prognosis. Methods. In this retrospective cohort study, we evaluated 210 patients treated for infective endocarditis (IE) at our hospital between December 2016 and June 2023. To analyze short-term outcomes, the patients were divided into two groups based on whether they experienced poor outcomes. We compared demographic characteristics, echocardiographic findings, laboratory test results, surgical details, and postoperative outcomes between the two groups. Patients’ long-term outcomes, including survival status and time of death, were assessed through follow-up, which involved telephone contact with the patient or their family. The follow-up period concluded on June 30, 2024. Results. The median age of the patients was 55 years, with most patients ranging from 42 to 64 years. Male patients accounted for 67.1%, and 21.4% had underlying cardiac conditions. During hospitalization, 125 out of 210 patients (59.5%) underwent surgery, with an emergency surgery rate of 6.2% and an in-hospital mortality rate of 13.8%.Regarding short-term outcomes, multivariate logistic regression analysis indicated that surgical treatment (OR 0.211, 95% CI 0.073–0.621) was associated with better patient prognosis. Periannular abscess (OR 4.948, 95% CI 1.005–24.349) and poorer cardiac function (NYHA II [OR 0.041, 95% CI 0.008–0.224], NYHA III [HR 0.207, 95% CI 0.057–0.757], with NYHA IV as the reference group) were significantly associated with poor prognosis in IE patients. For long-term outcomes, multivariate Cox survival analysis showed that surgical treatment (HR 0.200, 95% CI 0.091–0.437) was associated with improved long-term survival. Cerebral infarction (HR 1.939, 95% CI 1.050–3.582) and poorer cardiac function (NYHA II [HR 0.108, 95% CI 0.037–0.313], NYHA III [HR 0.308, 95% CI 0.118–0.805], with NYHA IV as the reference group) were significant factors associated with long-term mortality in IE patients. Conclusions. Surgical treatment was associated with improved short-term prognosis and long-term survival rates in patients with infective endocarditis. In terms of short-term outcomes, the presence of periannular abscesses and poor cardiac function were significant factors associated with poor prognosis. For long-term outcomes, cerebral infarction and poor cardiac function were significant factors associated with increased long-term mortality in these patients.


The efficacy of colchicine compared to placebo for preventing ischemic stroke among individuals with established atherosclerotic cardiovascular diseases: a systematic review and meta-analysis

Background. Colchicine is an anti-inflammatory drug with promising efficacy for preventing cardiovascular events. We aimed to assess the pooled effect of colchicine on ischemic stroke among patients with established atherosclerotic cardiovascular diseases. Methods. PubMed, Scopus, Web of Science, and the Cochrane Library were systematically searched from the inception to August 5, 2024. A random-effects (DerSimonian–Laird) model was used to conduct this meta-analysis. The inclusion criteria were as follows: (I) being a randomized controlled trial; and (II) measuring the efficacy of colchicine compared to placebo for preventing ischemic stroke among those with established atherosclerotic cardiovascular diseases. Results. We identified 13 eligible clinical trials with 24900 participants. Colchicine significantly decreased the risk of ischemic stroke (relative risk (RR) 0.85, 95% confidence interval (CI) (0.72, 0.99), I²=2.92%) among those with established atherosclerotic cardiovascular diseases. Colchicine was more effective when used at 0.5 mg/day (RR 0.86, 95% CI (0.75, 0.99)), prescribed for more than 30 days (RR 0.86, 95% CI (0.75, 1.00)) or for more than 90 days (RR 0.65, 95% CI (0.46, 0.92)), or administered for patients with acute coronary syndrome (RR 0.46, 95% CI (0.23, 0.92)). In addition, colchicine was more effective in studies with a sample size of more than 500 patients, consistent with sensitivity analysis, which indicated that the results relied on large-sized clinical trials. Conclusion. Colchicine may decrease the risk of ischemic stroke among patients with established atherosclerotic cardiovascular diseases, particularly after long-term use; however, future studies are needed due to inconsistencies between existing trials.


CircFNDC3B inhibits vascular smooth muscle cells proliferation in abdominal aortic aneurysms by targeting the miR-1270/PDCD10 axis

Objectives. This study investigated the role and underlying regulatory mechanisms of circular RNA fibronectin type III domain containing 3B (circFNDC3B) in abdominal aortic aneurysm (AAA). Methods. The expression of circFNDC3B in AAA and normal tissues was assessed by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). To evaluate the biological functions of circFNDC3B, assays were employed including 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), flow cytometry, and Caspase-3 activity assays. Additionally, RNA immunoprecipitation (RIP), dual-luciferase reporter assay, Western blotting, and rescue experiments were utilized to elucidate the molecular mechanism of circFNDC3B. Results. Our findings revealed a significant upregulation of circFNDC3B expression in AAA clinical specimens compared to normal tissues. Functionally, overexpression of circFNDC3B inhibited vascular smooth muscle cells (VSMCs) proliferation and induced apoptosis, contributing to AAA formation in the Ang II-induced AAA model. Mechanistically, circFNDC3B acted as a molecular sponge for miR-1270, leading to the upregulation of programmed cell death 10 (PDCD10). Decreased expression of PDCD10 abrogated the -promoting effects of circFNDC3B overexpression on AAA development. Conclusions. This study demonstrates that circFNDC3B promotes the progression of AAA by targeting the miR-1270/PDCD10 pathway. Our findings suggest that circFNDC3B as well as miR-1270/PDCD10 pathway may serve as a potential therapeutic target for AAA treatment.


Boxplot illustrating the distribution of self-perceived age according to chronological age in men and women.
Vascular ageing in relation to chronological and self-perceived age in the general Swedish population

November 2024

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21 Reads

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1 Citation

Background. Aortic stiffness is a marker of vascular ageing. Non-conventional risk markers reflecting vascular ageing are largely unexplored. We aimed to investigate the relationship between self-perceived age (SPA) and self-rated health (SRH) with aortic stiffness in the general population. Methods. Cross-sectional assessment of 3760 participants from two Swedish population-based cohorts (mean age 43.5 ± 14.5 years, 53.4% women). Participants completed two self-administered questions about SPA (SPA-self referring to SPA perceived by oneself, and SPA-others referring to SPA perceived by others) graded as: younger, no difference, or older than same-aged/sex peers. SRH was graded as poor versus good. Aortic stiffness (vascular ageing) was assessed by carotid–femoral pulse wave velocity (PWV). Linear regression was performed stratified by the median age of 45 years. Results. Chronologically younger men and women ≤45 years with older SPA-others had unexpectedly lower PWV (β − 0.39, p < .001 and β − 0.40, p < .001, respectively), independently of cardiovascular risk factors and social health determinants, compared with subjects with younger SPA-others. Lower PWV was also observed in women ≤45 years with older SPA-self (β − 0.24 m/s, p = .005) compared with younger SPA-self, but not in men. A similar pattern between SPA-self, SPA-others and PWV was found in chronologically younger subjects ≤45 years reporting good SRH. On the contrary, chronologically older subjects >45 years reporting poor SRH, with older SPA-others had increased vascular ageing (PWV β 2.57, p = .03). Conclusions. Self-perceived age is a subjective cognitive variable inversely associated with vascular ageing particularly among chronologically younger adults ≤45 years.


Measurements were taken in four different planes of the ascending aorta. 1. Sinus of Valsalva, 2. Sinotubular junction, 3. Tubular aorta and 4. Ascending aorta before the truncus brachiocephalicus.
Measurements were taken in three different directions in the sinus of Valsalva (A) and in two different directions in other parts of the aorta (B).
The measurements of the 164 patients who showed expansion of ATAA are illustrated as grey dots. Exponential, linear and logarithmic models are used to describe the pattern of ATAA growth and means of models are illustrated. The linear model best describes the pattern of ATAA growth.
An example of the ATAA growth for an individual patient with six measurements during the follow-up time of 12 years. Black dots represent the measurements during the followup. Linear model (red line) is the most accurate to describe the ATAA growth compared to the exponential model (green curve) and the logarithmic model (blue curve).
The number of the patients with different ATAA growth rates. In most of the patients who showed expansion of ATAA during the follow-up, the growth rate was low.
Linear growth pattern can be used to predict ascending aortic aneurysm growth

November 2024

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22 Reads

Objectives. Current guidelines recommend that surveillance imaging should be performed at least every third year for patients with ascending thoracic aortic aneurysm (ATAA) even though such aneurysms’ growth rate is mostly minimal. The purpose of this study was to clarify the pattern of the growth of ATAAs in a real-life patient population to adjust the optimal timing of aortic surveillance for each patient. Methods. This study includes patients (n = 209) who had been followed due to ATAA in the central hospital of North Karelia in Eastern Finland between years 2007 and 2023. Aortic imaging was performed using either computed tomography (CT) or transthoracic echocardiography (TTE). In the CT images, the aortic dimensions were measured according to guidelines in four levels of the ascending aorta. TTE measurements were collected from medical records. Measurements were used to explore the pattern of the ATAA growth. Results. During the mean surveillance time 5.0 ± 3.5 years, the median growth rate of ATAAs was 0.37 mm/year. One fifth (21.5%) of the aneurysms showed no expansion during the follow-up. Despite the minimal growth rate during surveillance, some patients ended up exceeding the cut-off for preventive surgery. Among the patients, who showed expansion during the follow-up, the linear model seemed to best describe the growth of ATAA. Conclusions. The majority of the patients had a very low ATAA growth rate. Based on this study, the growth of ATAAs could be described using a linear model, which could, in turn, be used to predict the growth of an aneurysm.


Ex vivo evaluation of the whole heart function allowing selective investigation of the right and left heart

October 2024

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30 Reads

Objectives. The aim was to demonstrate a reliable ex vivo method to test the function of the whole heart. Design. Pigs of varying sizes (44–80 kg) were exposed to dose response of adrenaline. Blood pressures and cardiac output were measured. The explanted hearts were tested in a novel ex vivo system to see if we could replicate the in vivo values at maximal adrenaline stimulation. The perfusion solution was STEEN Solution™ with erythrocytes and continuous infusion of essential drugs. In contrast to normal body circulation which is sequential, the heart evaluation system is divided into left and right heart circuits which are operating in parallel, making it possible to test the right and left heart individually or as a whole. The system provides coronary flow measurements. The nonlinear dynamic resistances are constructed to stabilize systolic and diastolic pressures in a broad range and independently from cardiac output. It is important for the functional evaluation to avoid pumping help for the heart; therefore, atrial vortexes are constructed to minimize pump flow directionality and energy from entering atria. Results. Ex vivo evaluation was able to match the maximal in vivo effect of adrenaline on cardiac output and blood pressures. After 2 h of evaluation, the blood gases and lactate were normal and free haemoglobin was zero. Autopsy of the hearts showed no macroscopic pathology. Conclusions. The system is able to give a reliable functional evaluation of the heart ex vivo.


Schematic pressure-volume diagram. The pressure-volume loop area represents stroke work (SW), the energy produced by the left ventricle to eject the stroke volume. Potential energy (PE) is obtained from the triangular area contained by the end-systolic pressure-volume relationship (ESPVR) and the end-diastolic pressure-volume relationship (EDPVR). Myocardial contractility can be expressed as the slope of the ESPVR. Arterial elastance is the negative slope of the line from maximal ventricular elastance to the end-diastolic volume (VED).
Haemodynamic variables derived from pressure-volume loops. Children with repaired tetralogy of Fallot demonstrated a higher arterial elastance(G) in comparison to controls. No difference was seen in the other variables. The three patients with the highest arterial elastance and contractility are marked above in circles. rToF, repaired Tetralogy of Fallot. Data is presented with median, presented with bars, and level of significance. *p < 0.05.
Left and right ventricular volumes indexed to body surface area (BSA). Children with repaired tetralogy of Fallot demonstrated smaller indexed left ventricular end-diastolic volume(a), left ventricular end-systolic volume(B) and right ventricular ejection fraction(G) as well as larger indexed right ventricular end-diastolic volume(E) and right ventricular end-systolic volume(F) in comparison to controls. No difference was seen in left ventricular ejection fraction(C) between controls and children with tetralogy of Fallot. The three patients with the highest arterial elastance and contractility are marked above in circles. rToF, repaired tetralogy of Fallot; BSA, body surface area. Data is presented with median and level of significance. ***, p < 0.001; **, p < 0.01; *, p < 0.05.
Systolic blood pressure, heart rate and pulmonary regurgitation. Children with repaired tetralogy of Fallot demonstrated higher heart rate(B) than controls. No difference was seen in systolic blood pressure(A) between controls and children with tetralogy of Fallot. The three patients with the highest arterial elastance and contractility are marked above in circles. rToF, repaired Tetralogy of Fallot. Data is presented with median and level of significance. *, p < 0.05.
Non-invasive pressure-volume loops show high arterial elastance in children with repaired tetralogy of Fallot

October 2024

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8 Reads

Background Children with repaired tetralogy of Fallot (rToF) often have pulmonary regurgitation with right ventricular (RV) dilatation and dysfunction, whereas less is known about the effect on the left ventricle (LV). The aim was to investigate LV haemodynamic variables derived from non-invasive pressure-volume loops in children with rToF and how they compare to controls and previous research on adults. Materials and methods Ten children with rToF and pulmonary regurgitation (12 years [10–13], 6 males) and 10 age- and sex-matched healthy controls (12 years [10–14], 6 males) underwent brachial blood pressure in conjunction with cardiac magnetic resonance imaging. Pressure-volume loops were derived by brachial blood pressure together with LV volumes throughout the cardiac cycle in short-axis cine images yielding several haemodynamic variables, including arterial elastance. The RV endocardial border was delineated in end-diastole and end-systole. Results Children with rToF and pulmonary regurgitation had larger RV end-diastolic volume (136 [114-156]) than controls (100 [94-112] ml/m²; p = 0.0015) and smaller LV end-diastolic volume (83 [58–91] ml/m²) than controls (101 [92–110] ml/m²; p = 0.002). Arterial elastance was higher in children with rToF (1.5 [1.3-2.7] mmHg/ml) than in controls (1.1 [1.0-1.5] mmHg/ml; p = 0.02). Heart rate was higher in children with rToF (77 [74-81] bpm) than in controls (69 [65–75] bpm; p = 0.027). Conclusion Children with rToF had higher arterial elastance and heart rate than controls, likely due to increased sympathetic tone to compensate for impaired LV filling following pulmonary regurgitation. If this contributes to increased risk of adverse cardiovascular and cerebrovascular events remains to be studied.


Numbers with different pathological ECG findings. RA: right atrial; RBBB: right bundle branch block.
Different pathological cardiovascular findings among 16 subjects with clinical and subclinical CVD. MI: mitral regurgitation; SVT: supraventricular tachycardia; CAD: coronary artery disease; AI: aortic regurgitation; AS: aortic stenosis; Dil AA: dilated ascending aorta; HCM: hypertrophic cardiomyopathy; VVH: left ventricular hypertrophy; HRS, high-risk score; LBBB: complete left bundle branch block.
Sensitivity, specificity, positive- and negative predictive value of a composite endpoint of questionnaire and CVD risk score to detect or exclude CVD among 81 master athletes. SAQ: self-assessment of symptoms by questionnaire; CVD: cardiovascular disease; PPV: positive predictive value; NPV: negative predictive value.
Value of preparticipation cardiovascular evaluation of master athletes by self-reported symptoms and cardiovascular risk-score

October 2024

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39 Reads

Purpose The risk of sudden cardiac death (SCD) is increased during endurance competitive sports. Coronary artery disease (CAD) is the most common cause of SCD in master athletes ≥ 35 years old (MAs). To reduce the risk of SCD self-assessment of symptoms by questionnaire, and evaluation of cardiovascular risk-score, are recommended as pre-participation cardiovascular evaluation (PCVE). We aimed to examine whether PCVE predicts CVD in MAs with or without increased risk as measured by validated score instruments. Methods We performed a single-site observational cohort study of healthy MAs based on findings at PCVE. They were allocated in two different groups: those MAs with reported symptoms on the questionnaire and/or with elevated cardiovascular risk score were allocated to a symptom group (SG), while MAs with no symptoms, nor raised risk score were defined as control group (CG). Thereafter, all were examined with extended examinations: resting-ECG, cardiorespiratory exercise testing and echocardiography. Results Total, 81 (18 women) MAs participated in the study. There were no differences at baseline between SG (n = 39) and CG (n = 42); sex (p = 0.11), age (55.0 ± 9.8 vs. 51.9 ± 11.1 years; p = 0.18), maximal oxygen uptake (49.8 ± 7.6 vs. 51.6 ± 7.0 ml/kg/min; p = 0.26), resting heart rate (61.4 ± 12.8 vs. 60.2 ± 11.0/min; p = 0.66), training hours/week (7.0 ± 3.2 vs. 7.1 ± 3.1; p = 0.88). After further examination, sixteen (20%) MAs were found with CVD: 12 in SG, 4 in CG (p = 0.024). The negative predictive value and specificity of the PCVE were 90% and 58%, respectively. Conclusion Negative findings on PCVE by questionnaire and cardiovascular risk-score may be a strategy to exclude subjects from preparticipation screening, thus saving resources.


Cardiovascular and kidney benefits of SGLT-2is and GLP-1RAs according to baseline blood pressure in type 2 diabetes: a systematic meta-analysis of cardiovascular outcome trials

Objectives Using a systematic meta-analysis, we investigated if patients with type 2 diabetes (T2D) and with varying baseline blood pressure (BP) differ in the cardiorenal benefits received from sodium–glucose co-transporter 2 inhibitors (SGLT-2is) and glucagon-like peptide 1 receptor agonists (GLP-1RAs). Design: Randomized, placebo-controlled, cardiovascular outcome trials (CVOTs) of SGLT-2is and GLP-1RAs were identified from MEDLINE, Embase, and the Cochrane Library up to April 2024. Hazard ratios (HRs) with 95% CIs were pooled. The differential treatment effect by baseline BP category within each trial was estimated as the ratio of the HR (RHR) and pooled. Results: Seventeen publications based on 9 unique CVOTs (4 SGLT-2is and 5 GLP-1RAs) were eligible. In participants with normal baseline BP, comparing SGLT-2is with placebo, the HRs (95% CIs) were 0.88 (0.79-0.97) for major adverse cardiovascular events (MACE), 0.73 (0.59-0.91) for heart failure (HF) hospitalization, 0.78 (0.65-0.94) for composite CVD death/HF hospitalization, and 0.55 (0.41-0.73) for composite renal outcome. The corresponding estimates for participants with higher baseline BP were 0.88 (0.81-0.96), 0.67 (0.57-0.79), 0.73 (0.65-0.82), and 0.61 (0.48-0.77), respectively. In participants with normal baseline BP, GLP-RAs had no strong effect on MACE, stroke and nephropathy, but reduced stroke and nephropathy risk in those with higher baseline BP. Estimated RHRs showed no statistical evidence that baseline BP modified the cardiorenal benefits of SGLT-2is and GLP-1RAs. Conclusions: In patients with T2D, the cardiorenal benefits of treatment with SGLT2-Is and GLP1-RAs were similar in patients with normal baseline BP compared to those with a higher baseline BP.


Flowchart of the selection process identifying the final study group (n = 186) by applying exclusion criteria to the initially eligible patients, referred to an aortic outpatient clinic (n = 756).
Diagram (“spaghetti plot”) of aortic arch diameter (y-axis) development over time (x-axis) in each patient (individual measure points not shown). Patients dying during the study period are highlighted in red. Note the logarithmic scale on x-axis.
Kaplan-Meier survival curves (with 95% confidence interval) for (panel A) freedom from all-cause death; (panel B) freedom from aortic death; (panel C) freedom from the local (aortic arch) event; (panel D) freedom from remote (proximal or distal to the aortic arch) event.
Kaplan-Meier Curve of event-free survival, freedom from any event
Growth, survival and events in patients with aortic arch pathology

September 2024

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20 Reads

Objectives This study describes aortic growth, survival and events in patients with aortic arch pathology. Methods Patients with an index diameter ≥4.5 cm or other pathology of the native aortic arch, were followed with longitudinal computed tomography and clinical data collected retrospectively. Aortic growth was estimated using a linear mixed model. Survival and event rates were estimated using Kaplan-Meier methods. Cox analysis assessed clinical and radiological predictors with outcomes (death, local or remote aortic events (acute aortic syndromes or intervention)). Results. 186 patients underwent 683 CT scans during 638 of patient years. The estimated annual growth was 0.28 (mm/year). 47 (25%) patients had an event and a 66% five-year event-free survival. 29 patients died, of whom 11 suffered an aortic death. 19 events were local and 25 events were remote, mostly primary events were interventions. In Cox analysis, increasing descending aortic diameter was an independent predictor of all cause of death (hazard ratio [HR], 2.16), aortic death (HR 4.81), and local event (HR 1.71). Conclusions. In patients with aortic arch pathology, growth, and aortic events should be expected. Increasing descending aortic diameter could presage an added risk, but other variables appear needed to identify patients at risk, select them for intervention or surveillance.


Short- and long-term mortality in age groups by renal function adjusted for DM status and sex.
Kaplan–Meier’s survival curves for age groups and renal function.
Examining the impact of renal dysfunction and diabetes on post-myocardial infarction mortality: insights from a comprehensive retrospective cohort study across different age groups

August 2024

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18 Reads

Aim. Chronic kidney disease (CKD) and diabetes mellitus (DM) contribute significantly to cardiovascular disease (CVD) and mortality, with prevalence increasing. The evolving demographic of myocardial infarction (MI) patients, influenced by sedentary lifestyles and advanced medical care, lacks understanding regarding the interplay of CKD, DM, age, and post-MI mortality. This study aims to address this gap by evaluating the long-term impact of CKD and DM on post-MI mortality across age groups. Methods. A retrospective cohort study utilized data from the Estonian Myocardial Infarction Registry (EMIR), Estonian Population Register (EPR), and six major hospitals in Estonia, covering AMI hospitalizations from 2012 to 2019. Statistical analyses included Cox proportional hazards regression models and Kaplan–Meier’s curves. Results. Analysis of 17,085 MI patients revealed age-dependent associations between renal function and mortality. In patients <65 years, even minor decreases in renal function increased both short-term (HR 2.79, 95% CI 1.71–4.55) and long-term (HR 1.24, 95% CI 1.05–1.47) mortality. Mortality significantly increased in patients >80 years only below an estimated glomerular filtration rate (eGFR) of 44 ml/min/1.73 m². Newly diagnosed DM patients exhibited higher mortality rates (average HR 1.53, 95% CI 1.45–1.62), while pre-DM did not significantly differ from non-DM patients across all age groups. The DM-renal failure interaction did not significantly influence mortality. Conclusions. An age-dependent association between eGFR and post-MI outcomes emphasizes the need for personalized therapeutic approaches considering age-specific eGFR thresholds and comorbidities to optimize patient management.


Distribution of time spend in different physical activity intensities and sedentary at baseline as percentage of mean wear time (pie chart upper), and by plotting data (density plots with individual data and boxplots, below).
Boxplots showing the median, (x = mean), upper and lower quartiles (boxes) and range (bars) of the fraction of time in the different physical activity variables at the two assessments. With differences (p < 0.05) in sedentary behavior and moderate physical activity over time.
Individual differences in PA categories, inactive (0-399 cpm), low (399-517 cpm), medium (517 -684 cpm), and high (>684 cpm), from baseline to one-year follow-up after myocardial infarction.
Decrease in accelerometer assessed physical activity during the first-year post-myocardial infarction: a prospective cohort study

August 2024

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33 Reads

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3 Citations

Objectives To elucidate physical activity in the first year after myocardial infarction (MI), and to explore differences in various subgroups, delineated by age, participation in exercise-based cardiac rehabilitation (exCR), or restrictions due to the covid-19 pandemic. Secondly, to explore associations between changes in physical activity variables with blood pressure and lipid levels. Methods A longitudinal study in 2017-2023. Physical activity variables were assessed via accelerometers at two- and twelve months post-MI. The intensity was divided into, sedentary, light, moderate, and vigorous-intensity physical activity, according to established cut-offs. Blood pressure and lipids were measured by standardized procedures at the same time points. Results There were 178 patients included at baseline, 81% male, mean age of 64 (9 SD) years. Patients spent 72% of their time sedentary, followed by light (19%), moderate (8%), and vigorous physical activity (1%). Patients included during covid-19 restrictions and younger patients had a higher level of moderate-intensity physical activity compared to patients included during non-pandemic restrictions and older patients. At 12-month follow-up, patients overall increased time (1%) in sedentary behavior (p = 0.03) and decreased time (0.6%) in moderate-intensity physical activity (p = 0.04), regardless of participation in exCR or age. There was a positive association between the change in mean physical activity intensity and HDL-cholesterol (p = 0.047). Conclusions Participants had a low fraction of time in moderate-to-vigorous-intensity physical activity two months post-MI, which deteriorated during the first year. This emphasizes the need for improved implementation of evidence-based interventions to support and motivate patients to perform regular physical activity.


Patient-reported physical activity, pain, and fear of movement after cardiac surgery: a descriptive cross-sectional study

August 2024

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22 Reads

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1 Citation

Objectives After cardiac surgery, there may be barriers to being physically active. Patients are encouraged to gradually increase physical activity, but limited knowledge exists regarding postoperative physical activity levels. This study aimed to assess patient-reported physical activity six months after cardiac surgery, determine adherence to WHO's physical activity recommendations, and explore potential relationships between pain, dyspnea, fear of movement, and activity levels. Methods The study design was a cross-sectional study at Örebro University Hospital, Sweden. Preoperative and surgical data were retrieved from medical records and questionnaires concerning physical activity (Frändin-Grimby Activity Scale, the Physical activity Likert-scale Haskell, Patient-Specific Functional Scale, and Exercise Self-efficacy Scale) were completed six months after surgery. Data were collected on pain, dyspnea, general health status and kinesiophobia i.e. fear of movement, using the Tampa Scale of Kinesiophobia Heart. Results In total, 71 patients (68 ± 11 years, males 82%) participated in this study. Most patients (76%) reported a light to moderate activity level (Frändin-Grimby levels 3-4) six months after cardiac surgery. In total, 42% of the patients adhered to the WHO’s physical activity recommendations (150 min/week). Pain and dyspnea were low. Patients with lower activity levels exhibited significantly higher levels of fear of movement (p =.025). Conclusions The majority of patients reported engaging in light to moderate activity levels six months after cardiac surgery. Despite this, less than half of the patients met the WHO's physical activity recommendations. Potential barriers to physical activity such as pain, dyspnea and fear of movement were reported to be low.



Heart rate at admission as a predictor or LVEF. a. Total sample, b. Sinus rhythm, c. Atrial fibrillation, Bpm: Beats per minute; HR: heart rate; LVEF: left ventricular ejection fraction.
Predicted probability for each category of LVEF according to heart rate at admission. a. Predicted probability for LVEF ≤40% according to heart rate at admission. b. Predicted probability for LVEF 41–49% according to heart rate at admission. c. Predicted probability for LVEF 50–59% according to heart rate at admission. d. Predicted probability for LVEF ≥65% according to heart rate at admission. Bpm: Beats per minute; HR: heart rate; LVEF: left ventricular ejection fraction.
Predicted probability for each category of LVEF according to heart rate at admission in patients with sinus rhythm. a. Predicted probability for LVEF ≤40%. b. Predicted probability for LVEF 41–49%. c. Predicted probability for LVEF 50–59%. d. Predicted probability for LVEF ≥65%. Bpm: Beats per minute; HR: heart rate; LVEF: left ventricular ejection fraction.
Predicted probability for each category of LVEF according to heart rate at admission in patients with atrial fibrillation. a. Predicted probability for LVEF ≤40%. b. Predicted probability for LVEF 41–49%. c. Predicted probability for LVEF 50–59%. d. Predicted probability for LVEF ≥65%. Bpm: Beats per minute; HR: heart rate; LVEF: left ventricular ejection fraction.
Lower heart rate in patients with acute heart failure: the role of left ventricular ejection fraction

August 2024

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49 Reads

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2 Citations

Background The clinical impact of heart rate (HR) in heart failure with preserved ejection fraction (HFpEF) is a matter of debate. Among those with HFpEF, chronotropic incompetence (CI) has emerged as a pathophysiological mechanism linked to the severity of the disease. In this study, we sought to evaluate whether admission heart rate in acute heart failure differs along left ventricular ejection fraction (LVEF). Methods We included retrospectively 3,712 consecutive patients admitted for acute heart failure (AHF) in the Cardiology department of a third level center. HR values were assessed at presentation. LVEF was assessed by transthoracic echocardiogram during the index admission and stratified into four categories: reduced ejection fraction (≤40%), mildly reduced ejection fraction (41–49%), preserved ejection fraction (50–64%) and supranormal ejection fraction (≥65%). The association between HR and LVEF was assessed by multivariate linear and multinomial regression analyses. Results The mean age of the sample was 73,9 ± 11.3 years, 1,734 (47,4%) were women, and 1,214 (33,2%), 570 (15,6%), 1,229 (33,6%) and 648 (17,7%) patients showed LVEF ≤40%, 41–49%, 50–64%, and ≥65% respectively. The median HR at admission was 95 (IQR 78–120) beats per minute and 1,653 were on atrial fibrillation (45.2%). There was an inverse relationship between HR at admission and LVEF. Lower HR was significantly associated with a higher LVEF in the whole sample (p < 0,001). This inverse relationship was found in sinus rhythm but not in patients with atrial fibrillation. Conclusion HR at admission for AHF is a predictor of LVEF but only in patients with sinus rhythm.



Proportions (%) of patients with intentional or unintentional weight loss 5 years after PCI across baseline BMI categories. (B) Mean total body weight loss (%) in patients with intentional or unintentional weight loss 5 years after PCI across baseline BMI categories.
Major cardiovascular events (MACE) and new-onset comorbidities during follow-up among patients with normal weight, overweight and obesity.
Association of normal body mass index and weight loss with long-term major cardiovascular events after PCI for myocardial infarction

August 2024

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29 Reads

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1 Citation

Objectives: To investigate whether normal body mass index (BMI) shortly after percutaneous coronary intervention (PCI) for myocardial infarction is associated with increased risk of long-term major cardiovascular events (MACE), and to explore potential clinical determinants of long-term weight loss (WL) after PCI. Methods: Single-center cohort study with 5-year follow-up of patients treated with PCI for myocardial infarction between 2016 and 2018. Categorical WL was defined as > 0 kg body weight reduction from baseline to end of follow-up. Results: Of 236 patients (24% women), mean age was 64.9 ± 10.2 years and mean BMI within 4 days after PCI was 27.1 ± 4.3 kg/m². Seventy-five patients (32%) had at least one MACE, equally distributed between those with normal weight (31%), overweight (32%), and obesity (31%). Patients with overweight or obesity had a lower crude mortality rate than their normal weight counterparts (7.4% vs 16.4%, p = 0.049), but the relative hazard of death did not differ from those with normal weight, HR 0.50, 95% CI 0.22-1.15. Patients with either a long-term WL (n = 112) or no WL (n = 95) had a comparable incidence of non-fatal MACE (27% vs 22%, p = 0.518). The proportion of patients reporting unintentional weight loss was significantly higher in the normal weight group (82%) compared with those with overweight (41%) or obesity (28%), p < 0.001. Conclusion: Our results did not confirm any association between normal BMI after PCI and long-term MACE. However, patients with normal BMI at baseline had a higher incidence of unintentional WL than those with elevated BMI. Trial registration: Current research information system in Norway (CRISTIN): ID 542528


Journal metrics


1.2 (2023)

Journal Impact Factor™


17%

Acceptance rate


3.4 (2023)

CiteScore™


43 days

Submission to first decision


0.709 (2023)

SNIP


0.569 (2023)

SJR

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