N Mininni

Monaldi Hospital, Napoli, Campania, Italy

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Publications (77)322.41 Total impact

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    ABSTRACT: The publisher regrets that this was an accidental duplication of an article that has already been published in Eur. J. Echocardiogr., 4 (2003) 202-208, . The duplicate article has therefore been withdrawn.
    European Heart Journal – Cardiovascular Imaging 11/2006; DOI:10.1053/euje.2002.0635 · 2.65 Impact Factor
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    ABSTRACT: Stress echocardiography has become a common non-invasive test in patients with chest pain and known or suspected coronary artery disease, but, as with exercise electrocardiography, it shows several major limitations. Analysis of gray-scale images based on subjective visual interpretation of wall motion and thickening has considerable variability even among experts. Doppler myocardial imaging and strain rate imaging echocardiography provides additional information in comparison with conventional echocardiography. These techniques provide quantification of regional wall motion at rest and during stress. Quantification of both systolic and diastolic myocardial function by either Doppler myocardial imaging or strain rate imaging mapping during dobutamine stress test has been shown to be a feasible, accurate, non-invasive tool that should be considered to be a sensitive alternative to the present echocardiographic and scintigraphic imaging techniques for stress tests. Time consuming off-line analysis of color images is required in the present state of technology. However, these non-invasive techniques are rapidly evolving and expanding. Further refinements in signal processing and quantitative analysis are likely in the near future.
    Journal of Cardiovascular Medicine 08/2006; 7(7):480-90. DOI:10.2459/01.JCM.0000234766.65830.1c · 1.51 Impact Factor
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    ABSTRACT: The aim of our study was to evaluate the effect of cardiac resyncronization therapy (CRT) on QT dispersion (QTd), JT dispersion (JTd) and transmural dispersion of re-polarization (TDR), markers of heterogeneity of ventricular repolarization in a study population with severe heart failure. Fifty patients (43 male, 7 female, aged 60.2 ± 3.1 years) suffering from congestive heart failure (N = 39 NYHA class III; N = 11 NYHA class IV) as a result of coronary artery disease (N = 19) or of dilated cardiomyopathy (N = 31), sinus rhythm, QRS duration >130 ms (mean QRS duration >156 ± 21 ms), an ejection fraction < 35%, left ventricular end-diastolic diameter >55 mm, underwent permanent biventricular DDDR pacemaker implantation. A 12-lead standard electrocardiogram was performed at baseline, during right-, left-, and biventricular pacing and QTd, JTd and TDR were assessed. Biventricular pacing significantly reduced QTd (73.93 ± 19.4 ms during BiVP vs 91 ± 6.7 ms at sinus rhythm, p = 0.004), JTd (73.18 ± 17.16 ms during BiVP vs 100.72 ± 39.04 at baseline p = 0.003), TDR (93.16 ± 15.60 vs 101.55 ± 19.08 at baseline; p<0.004), as compared to sinus rhythm. Right ventricular endocardial pacing and left ventricular epicardial pacing both enhanced QTd (RVendoP 94 ± 51 ms, p<0.03; LVepiP 116 ±71 ms, p<0.02) and TDR (RVendoP 108.13 ± 19.94 ms; p<0.002; LVepiP 114.71 ± 26.1; p<0.05).There was no effect on JTd during right and left ventricular stimulation. Biventricular pacing causes a statistically significant reduction of ventricular heterogeneity of ripolarization and has an electrophysiological antiarrhythmic influence on arrhythmogenic substrate of dilatative cardiomiopathy.
    Heart International 05/2006; 2(1):27. DOI:10.4081/hi.2006.27
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    ABSTRACT: According to the statements from the International Cardiological Committees on Eligibility for Sports, athletes with a clinical diagnosis of hypertrophic cardiomyopathy (HCM) should be excluded from most competitive sports, with the possible exception of those of low intensity. Clinical distinctions between physiological athlete's heart and pathological conditions such as HCM have critical implications especially for trained athletes. Even if the standard two-dimensional echocardiography represents an irreplaceable method in the evaluation of cardiac adaptations to physical exercise, the data currently available suggest the usefulness of Doppler myocardial imaging (DMI) in the assessment of the myocardial systolic and diastolic function of the athlete's heart. On this ground, the combined use of standard two-dimensional echocardiography and DMI may be taken into account for a valid, non-invasive and easily repeatable evaluation of both physiological and pathological ventricular hypertrophy, and in selecting a subgroup of HCM patients at higher risk of cardiac events. In particular, DMI analysis in the trained individual has demonstrated an interesting opportunity for: (1) the differential diagnosis from pathological left ventricular hypertrophy due to HCM; (2) the prediction of cardiac performance during physical effort; (3) the evaluation of bi-ventricular interaction; (4) the analysis of myocardial adaptations to various training protocols; and (5) the early identification of specific genotypes associated with cardiomyopathies.
    Journal of Cardiovascular Medicine 05/2006; 7(4):257-66. DOI:10.2459/01.JCM.0000219318.12504.bb · 1.51 Impact Factor
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    ABSTRACT: Background: Angiotensin-converting enzyme inhibitors reduce mortality and remodeling after myocardial infarction in patients with left ventricular dysfunction. Methods: Perindopril and Remodeling in Elderly With Acute Myocardial Infarction (PREAMI), a double-blind, randomized, parallel-group, multicenter, placebo-controlled study, determined whether similar benefits occur in elderly postinfarction patients with preserved left ventricular function. A total of 1252 patients 65 years or older with a left ventricular ejection fraction of 40% or higher and recent acute myocardial infarction were randomized to receive perindopril erbumine or placebo (8 mg/d) for 12 months. The combined primary end point was death, hospitalization for heart failure, or left ventricular remodeling. Secondary end points included cardiovascular death, hospitalization for reinfarction or angina, and revascularization. Results: The primary end point occurred in 181 patients (35%) taking perindopril and 290 patients (57%) taking placebo, with a significant absolute risk reduction of 0.22 (95% confidence interval, 0.16 to 0.28; P < .001). A total of 126 patients (28%) and 226 patients (51%) in the perindopril and placebo groups, respectively, experienced remodeling. The mean increase in left ventricle end-diastolic volume was 0.7 mL with perindopril compared with 4.0 mL with placebo (P <. 001). In the perindopril group, 40 deaths (6%) and 22 hospitalizations (4%) for heart failure occurred, whereas 37 deaths (6%) and 30 hospitalizations (5%) occurred in the placebo group. Treatment did not affect death, whereas the hospitalization rate for heart failure was slightly reduced ( absolute risk reduction, 0.01; 95% confidence interval, -0.01 to 0.02). No treatment effect on other secondary end points was detected. Conclusion: We found that 1-year treatment with 8mg/d of perindopril reduces progressive left ventricular remodeling that can occur even in the presence of small infarct size, but it was not associated with better clinical outcomes.
    Archives of Internal Medicine 03/2006; 166(6):659-666. · 13.25 Impact Factor
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    European Heart Journal – Cardiovascular Imaging 12/2005; 6(suppl 1). DOI:10.1016/S1525-2167(05)80705-X · 4.11 Impact Factor
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    ABSTRACT: Few data are available to show benefit of bifocal pacing (BIF) in HF patients. Regional strain rate (SR) and strain (S) may be a new echographic approach to quantify regional function during BIF pacing. Acute changes may be showed in patients during BIF vs VVI pacing. Ten HF pts (7 m, 63±11y, 7 ischemic with LBBB, NYHA class 3), were evaluated after two years implantation of BIF device. Acute influence of the site of ventricular pacing was studied in the same session by comparison of the BIF pacing (two RV leads: one on septum and one in apex) vs VVI stimulation in sinus rhythm. SR, S peaks systolic curves and myocardial mean systolic velocity (Sm) were calculated at level of basal segment of septum, LV lateral wall and RV free wall. Results The BIF increased both SR of LV lateral wall [-2,03±0,8 vs 1,23±0,3 1/s, p:<0,05], and S [-17,9±8 vs -13,3±6 %]. No differences were observed in Sm data [3,58±1,2 vs 3,18±1,3 m/s]. Conclusion SR is useful to evaluate the better acute performance of BIF in respect of conventional pacing.
    Europace 10/2005; 7. DOI:10.1016/j.eupc.2005.08.150 · 3.05 Impact Factor
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    ABSTRACT: To assess the prognostic significance of supine bicycle exercise stress echocardiography (ESE) for cardiac events, and the ESE additional role compared to other traditional clinical and echo variables, in patients with proven or suspected coronary artery disease (CAD). Clinical status and long-term outcome were assessed in 607 patients, for a mean period of 49.9 +/- 12.5 months. ESE was performed for the diagnosis of suspected CAD in 267 patients, and for the risk stratification in 340 patients. At baseline, the mean value of WMSI was 1.22 +/- 0.36, and the mean left ventricular ejection fraction was 58.2 +/- 10.9%. The ESE was positive for ischemia in 210 patients (34.9%), while the ECG was suggestive for ischemia in 157 patients. At peak effort, the mean WMSI was 1.38 +/- 0.46. Low work load was achieved by 158 patients (26.1%). During the follow-up period there were 222 events, including 48 cardiac deaths and 34 acute non-fatal myocardial infarction. By multivariable model, cigarette smoking, peak WMSI, positive ESE for ischemia and low work load were the only independent predictors of cardiac death. The cumulative 5-year mean survival rate according to ESE response was 95.9% in patients with negative ESE, and 81.7% in positive ESE (p < 0.00001). In patients with known or suspected CAD able to perform a physical stress, bicycle ESE is able to stratify patients at higher risk of cardiac events. The final report of an ESE performed for prognostic purpose should include both the assessment of induced dyssinergy and the evaluation of indexes of the extent and the severity of myocardial ischemia.
    European Heart Journal – Cardiovascular Imaging 08/2005; 6(4):271-9. DOI:10.1016/j.euje.2004.11.001 · 4.11 Impact Factor
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    ABSTRACT: Accurate echocardiographic parameters to predict maintenance of sinus rhythm in patients with atrial fibrillation (AF) are poorly defined. This study was conducted to assess the atrial myocardial properties during AF through myocardial velocity, strain rate, and strain and to compare their prognostic value in maintaining sinus rhythm in patients with lone AF with standard transthoracic (TTE) and transesophageal echocardiography (TEE). Sixty-five consecutive patients with lone AF for < or =3 months underwent TTE, TEE, and myocardial velocity and strain and strain rate imaging examinations before successful external cardioversion. Maintenance of sinus rhythm was assessed during a 9-month follow-up. Atrial myocardial velocity, strain, and strain rate values in AF patients were compared with those of age- and sex-matched referents. Moreover, clinical and echocardiographic parameters of patients with maintenance of sinus rhythm (MSR patients) over the 9-month follow-up period (n=25) were compared with those from patients with AF recurrence (AFR patients; n=40). Atrial myocardial properties assessed by myocardial velocity, strain rate, and strain were significantly reduced (P<0.0001) in patients (velocity, 3.2+/-1.4 cm/s; strain, 23.3+/-19%; strain rate, 2+/-0.9 seconds(-1)) compared with referents (velocity, 5.7+/-1.3 cm/s; strain, 92+/-26%; strain rate, 4.2+/-1.8 seconds(-1)). The individual predictors of sinus rhythm maintenance were atrial appendage flow velocity (MSR patients, 39+/-12 cm/s; AFR patients, 32+/-15 cm/s; P<0.01) assessed by TEE and atrial strain (MSR patients, 33+/-27%; AFR patients, 17+/-9%; P=0.0007) and strain rate (MSR patients, 2.7+/-1 seconds(-1); AFR patients, 1.6+/-0.6 seconds(-1); P<0.0001) peak systolic values. Atrial strain (P<0.0001; coefficient, 0.015; SE, 0.003) and strain rate (P<0.0001; coefficient, 0.372; SE, 0.075) parameters alone were confirmed as independent predictors of sinus rhythm maintenance by multivariable analysis. Patients with higher atrial strain and strain rate appear to have a greater likelihood of staying in sinus rhythm. If the current data are verified in future studies, then additional pharmacological therapy and maintenance of anticoagulants for a longer period may need to be considered in those with lower atrial strain and strain rate measurements.
    Circulation 08/2005; 112(3):387-95. DOI:10.1161/CIRCULATIONAHA.104.463125 · 14.95 Impact Factor
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    ABSTRACT: The aim of this study was to assess the long-term predictive values of supine bicycle exercise stress echocardiography (ESE), and the ESE additional role compared to other traditional clinical and rest echocardiographic variables, in 607 patients with low, intermediate and high pretest risk of cardiac events. Clinical status and long-term outcome were assessed for a mean period of 46 months (range 12-60 months). ESE was performed for the diagnosis of suspected coronary artery disease (CAD) in 267 patients (43.9%), and for risk stratification of known CAD in 340 patients (56.1%). At baseline, the mean value of wall motion score index (WMSI) was 1.22 +/- 0.36, and the mean left ventricular ejection fraction was 58.5 +/- 10.9%. ESE was positive for ischemia in 210 patients (34.9%), while ECG was suggestive for ischemia in 157 patients (25.8%). During the test only 97 patients (15.9%) experienced angina. At peak effort, the mean WMSI was 1.38 +/- 0.46. A low workload was achieved by 158 patients (26.1%). During the follow-up period there were 222 events, including 82 hard events (36.9%), 48 deaths (21.6%) and 34 acute non-fatal myocardial infarction (15.3%). At stepwise multivariate model, cigarette smoking (p < 0.01), peak WMSI (p < 0.001), ESE positive for ischemia (p < 0.001) and low workload (p < 0.01) were the only independent predictors of cardiac death, while positive ESE, peak WMSI, angina during the test and hypercholesterolemia were the only independent determinants of hard cardiac events. The cumulative 5-year mean survival rate according to ESE response was 95.9% in patients with negative ESE, and 83.7% in patients with positive ESE (log rank 13.6; p < 0.00001). ESE yields prognostic information in known or suspected CAD, especially in patients with intermediate pretest risk level. The combined evaluation of clinical variables and other ESE variables, such as peak WMSI and exercise capacity, may further select patients at greatest risk of cardiac death in the overall population.
    Italian heart journal: official journal of the Italian Federation of Cardiology 07/2005; 6(7):565-72.
  • Journal of the American Society of Echocardiography 06/2005; 18(5):481-2. DOI:10.1016/j.echo.2004.09.004 · 3.99 Impact Factor
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    ABSTRACT: Strain/strain rate are a new echocardiographic technique able to quantify regional myocardial deformation. Since myocardial velocity, obtained by standard tissue Doppler, is affected by global heart motion, cardiac rotation and influence from velocities in other segments, strain/strain rate have been introduced to measure regional shortening fraction and shortening rate, respectively. The present review discusses the most recent developments in the application of strain/strain rate in coronary artery disease.
    Italian heart journal. Supplement: official journal of the Italian Federation of Cardiology 02/2005; 6(1):17-24.
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    ABSTRACT: Background: Angiotensin-converting-enzyme (ACE) inhibitors are effective in reducing the risk of heart failure, myocardial infarction, and death from cardiovascular causes in patients with left ventricular systolic dysfunction or heart failure. ACE inhibitors have also been shown to reduce atherosclerotic complications in patients who have vascular disease without heart failure. Methods: In the Prevention of Events with Angiotensin Converting Enzyme Inhibition (PEACE) Trial, we tested the hypothesis that patients with stable coronary artery disease and normal or slightly reduced left ventricular function derive therapeutic benefit from the addition of ACE inhibitors to modern conventional therapy. The trial was a double-blind, placebo-controlled study in which 8290 patients were randomly assigned to receive either trandolapril at a target dose of 4 mg per day (4158 patients) or matching placebo (4132 patients). Results: The mean (+/-SD) age of the patients was 64+/-8 years, the mean blood pressure 133+/-17/78+/-10 mm Hg, and the mean left ventricular ejection fraction 58+/-9 percent. The patients received intensive treatment, with 72 percent having previously undergone coronary revascularization and 70 percent receiving lipid-lowering drugs. The incidence of the primary end point -- death from cardiovascular causes, myocardial infarction, or coronary revascularization -- was 21.9 percent in the trandolapril group, as compared with 22.5 percent in the placebo group (hazard ratio in the trandolapril group, 0.96; 95 percent confidence interval, 0.88 to 1.06; P=0.43) over a median follow-up period of 4.8 years. Conclusions: In patients with stable coronary heart disease and preserved left ventricular function who are receiving ``current standard'' therapy and in whom the rate of cardiovascular events is lower than in previous trials of ACE inhibitors in patients with vascular disease, there is no evidence that the addition of an ACE inhibitor provides further benefit in terms of death from cardiovascular causes, myocardial infarction, or coronary revascularization.
    New England Journal of Medicine 11/2004; 351(20):2058-2068. · 54.42 Impact Factor
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    ABSTRACT: Background. The atrial Fibrillation/flutter Italian REgistry (FIRE) study was designed to obtain updated information regarding the clinical characteristics of and medical approach to patients requiring urgent medical care for atrial fibrillation (AF) or atrial flutter in a nationwide and representative series of hospitals. Methods. 4570 consecutive patients admitted to the emergency room for AF/ atrial flutter were enrolled in 207 hospitals. Of these, 2838 (61.9%) were hospitalized (median 6 days, 43% in cardiology and 57% in internal medicine departments), and constitute the population of this study. Results. AF/atrial flutter represented 1.5% of all emergency room admissions and 3.3% of all hospitalizations. The mean age was 70 > 12 years; 89.9% had AF and 10.1% atrial flutter. In 31% of the hospitalized patients no cardiac disease was present, and in 18% no disease (either cardiac or noncardiac) could be detected. Predictors of no attempt of cardioversion (37.5% of patients) included: onset of AF > 48 hours, heart failure, increasing age, syncope, admission to a non-cardiology department, stroke or transient ischemic attack (TIA). Predictors of in-hospital mortality (2.2%) included: age, heart failure, diabetes, admission to a non-cardiology department, and stroke or TIA. Predictors of the absence of sinus rhythm at discharge (35.6% of patients) included: no attempt of cardioversion, heart failure, chronic anticoagulation, AF duration > 48 hours, increasing age, stroke or TIA, and admission to a non-cardiology department. Transesophageal echocardiography was performed in only 6% of patients. Conclusions. AF/atrial flutter represent a significant burden on the health care system with a higher than expected hospitalization rate from the emergency room. One out of three discharged patients is not in sinus rhythm. There is still a wide gap between evidence-based medicine and real practice in the treatment of patients with AF.
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    European Heart Journal – Cardiovascular Imaging 12/2003; 4. DOI:10.1016/S1525-2167(03)90773-6 · 4.11 Impact Factor
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    ABSTRACT: Stress hyperglycemia has been associated with increased mortality in patients with myocardial infarction (MI). We examined the association between plasma glucose levels, circulating inflammatory markers, T-cell activation, and functional cardiac outcome in patients with first MI. Echocardiographic parameters, circulating levels of interleukin-18 (IL-18), C-reactive protein (CPR), and the percent of CD16-CD56, CD4/CD8, CD152, and HLA-DR expression were investigated in 108 patients with acute MI on admission to the emergency ward. Our review found that 31 new hyperglycemic patients (glycemia >or=7 mmol/l) had higher infarct segment length (P < 0.05) and myocardial performance index (P < 0.02) and reduced transmitral Doppler flow (P < 0.05), pulmonary flow analysis (P < 0.02), and ejection fraction (P < 0.05) compared with 36 hyperglycemic diabetic patients and 41 normoglycemic patients. Plasma IL-18 and CRP were higher in the hyperglycemic than in the normoglycemic patients (P < 0.005), with the highest values in patients with new hyperglycemia (P < 0.05). Hyperglycemic patients had a higher percent of CD16+/CD56+ cells and CD4/CD8 ratio (P < 0.01), whereas they had lower CD152 expression (which has a negative regulatory function in T-cell activation) compared with normoglycemic patients (P < 0.001). During MI, hyperglycemia is associated with increased levels of inflammatory markers, enhanced expression of cytotoxic T-cells, and reduced expression of T-cells, which are implicated in limiting the immune process. An increased inflammatory immune process seems a likely mechanism linking acute hyperglycemia to poor cardiac outcome in MI patients.
    Diabetes Care 11/2003; 26(11):3129-35. DOI:10.2337/diacare.26.11.3129 · 8.57 Impact Factor
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    ABSTRACT: Our study was undertaken to assess the prognostic significance of pharmacological stress echocardiography in 325 diabetic patients. Pharmacological stress echocardiography was performed for diagnosis of coronary artery disease in 128 patients, and for risk stratification in 197 patients. Follow-up was 34 months. Cardiac-related death and non-fatal myocardial infarction were considered hard events. During the follow-up period, there were 38 deaths and 23 acute non-fatal myocardial infarctions. By univariate analysis, a pharmacological stress echocardiography positive response for ischaemia indicated an increased risk of cardiovascular death. However, by multivariate analysis, advanced age and peak ejection fraction <40% were the only independent predictors of cardiac death. The same peak ejection fraction (EF) <40%, rest wall motion score index and previous myocardial infarction were independent predictors of hard events. After dividing the population into two subgroups on the basis of EF at rest, only a peak EF <40% and a pharmacological stress echocardiography positive test were powerful independent predictors of cardiovascular mortality.
    European Heart Journal – Cardiovascular Imaging 09/2003; 4(3):202-8. DOI:10.1016/S1525-2167(02)00165-8 · 4.11 Impact Factor
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    ABSTRACT: The aim of this study was to evaluate the patency of left and right internal mammary artery grafts respectively on the left anterior descending and right coronary artery by noninvasive transthoracic color Doppler echocardiography. Thirty eight patients (34 males, 4 females, mean age 59 +/- 2 years), with a history of coronary artery bypass grafting for a total of 42 mammary artery grafts, were studied by means of color Doppler echocardiography at baseline and after vasodilation with dipyridamole infusion (0.56 mg/kg i.v. over 4 min). The evaluated echocardiographic parameters included: systolic (SPV) and diastolic peak velocities (DPV), systolic (SVI) and diastolic velocity-time integrals (DVI), and the DPV/SPV and DVI/SVI ratios. We also calculated the dipyridamole infusion to baseline ratio of the diastolic peak velocities (DPVdip/DPVbaseline), the index of internal mammary artery graft blood flow reserve and the percent DPV increment as an index of graft stenosis. On the basis of coronary angiography, two groups were selected: group A (36 mammary grafts) with patent grafts and group B (6 mammary grafts) with moderate or severe stenosis of the grafts. Group A had a predominant diastolic pattern with a DPV of 0.24 +/- 0.13 m/s, whereas group B had a predominant systolic pattern with a reduced DPV of 0.12 +/- 0.03 m/s (p < 0.01). Dipyridamole induced an increase in the DPV respectively of 86.8 +/- 64.4% in group A and 13.8 +/- 15.9% in group B (p < 0.001). Statistical analysis (Mann-Whitney test) revealed a significant difference between the two groups for the baseline DPV (p < 0.01), DVI (p < 0.05), DPV/SPV ratio (p < 0.005), DVI/SVI ratio (p < 0.05), and for the after dipyridamole infusion values: DPV (p < 0.0001), DVI (p < 0.005), DPV/SPV ratio (p < 0.001), and DVI/SVI ratio (p < 0.05). Multivariate analysis showed that the percent DPV increment, the DPVdip/DPVbaseline ratio and the baseline DPV were independent determinants of the stenosis as evaluated at angiography (beta = -0.38, p < 0.01; beta = -0.37, p < 0.01, and beta = -0.33, p < 0.05, respectively; cumulative r2 = 0.25, standard error 0.30 m/s, p < 0.005). The echocardiographic evaluation of the mammary grafts is a simple, noninvasive method for the assessment of the graft patency and of the functional status of the vessel. The percent DPV increment and baseline DPV were independent determinants of mammary graft stenosis.
    Italian heart journal: official journal of the Italian Federation of Cardiology 04/2003; 4(3):173-8.

Publication Stats

2k Citations
322.41 Total Impact Points

Institutions

  • 2000–2006
    • Monaldi Hospital
      Napoli, Campania, Italy
  • 2001–2002
    • CMNS Consorzio Mario Negri Sud
      • Department of Clinical Pharmacology and Epidemiology
      Santa Maria Imbaro, Abruzzo, Italy
  • 1999–2001
    • University of Naples Federico II
      • Department of Molecular Medicine and Medical Biotechnology
      Napoli, Campania, Italy