Satoshi Kurisu

Hiroshima University, Hirosima, Hiroshima, Japan

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Publications (190)748.93 Total impact

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    ABSTRACT: Background: The epidemiological data of pulmonary hypertension (PH) due to left heart disease (LHD) are limited. This study investigated hemodynamic and clinical factors associated with mortality in patients with PH due to LHD. Methods and Results: We conducted a retrospective review in 243 patients with PH due to LHD, defined as mean pulmonary arterial pressure ≥25 mmHg and pulmonary wedge pressure >15 mmHg at rest in right heart catheterization. Kaplan-Meier and Cox proportional hazard regression analyses were performed. Seventy-five patients died during an average follow-up of 52 months (range, 20–73 months). On multivariate analysis, only diastolic pulmonary vascular pressure gradient (DPG) ≥7 mmHg among hemodynamic measurements was a predictor of mortality. Elevated N-terminal pro-brain natriuretic peptide (NT-pro BNP), more severe New York Heart Association (NYHA) class, anemia, and renal dysfunction were more strongly associated with mortality. Mean right atrial pressure (RAP) and currently available markers of pulmonary vascular remodeling including transpulmonary pressure gradient (TPG) and pulmonary vascular resistance (PVR) had no effect on survival. Conclusions: DPG is weakly associated with mortality in PH due to LHD. Clinical factors such as NT-pro BNP, NYHA class, anemia and renal dysfunction are superior predictors. The prognostic ability of hemodynamic factors such as mean RAP, TPG, PVR and DPG is limited.
    No preview · Article · Dec 2015 · Circulation Journal
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    ABSTRACT: Background: Left ventricular diastolic dysfunction is a sensitive and early sign of myocardial ischemia. We assessed whether mitral annular velocity reflected the severity of myocardial ischemia evaluated by single-photon emission computed tomography in patients with suspected coronary artery disease (CAD) and preserved ejection fraction. Methods and results: The study population consisted of 125 patients with suspected CAD who underwent both single-photon emission computed tomography and transthoracic echocardiography. There were 68 patients with no ischemia, 42 patients with mild ischemia, and 15 patients with severe ischemia. With increasing severity of myocardial ischemia, septal e' decreased. Compared with patients with no ischemia, septal e' was significantly lower even in patients with mild ischemia (6.6±1.4 vs. 6.1±1.4 cm/s, P<0.05). Septal E/e' (9.9±2.6 vs. 13.6±4.0, P<0.01) and lateral E/e' (7.7±2.3 vs. 10.3±3.6, P<0.01) were significantly higher finally in patients with severe ischemia. Multivariate logistic regression analyses showed that BMI [odds ratio (OR) 1.13, 95% confidence interval (CI) 1.01-1.29; P=0.03] and septal e' (OR 0.71, 95% CI 0.53-0.94; P=0.02) were independent predictors of any myocardial ischemia and that diabetes (OR 5.78, 95% CI 1.58-23.0; P=0.008) and septal E/e' (OR 1.38, 95% CI 1.13-1.76; P=0.001) were independent predictors of severe myocardial ischemia. Conclusion: Our data suggested that decreased e' was useful in detecting mild myocardial ischemia and increased E/e' was useful in detecting severe myocardial ischemia in patients with suspected CAD and preserved ejection fraction.
    No preview · Article · Nov 2015 · Nuclear Medicine Communications
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    ABSTRACT: Pulmonary tumor thrombotic microangiopathy (PTTM) is a rare and fatal cancer-related complication. We herein present a case of PTTM that diagnosed antemortem by lung scintigraphy and pulmonary microvascular cytology. The patient was treated with steroid pulse therapy. Although her symptoms temporarily improved, she died of respiratory failure. An autopsy showed PTTM, and an immunohistochemical analysis revealed the expression of osteopontin and CD44 in macrophages that had migrated into the PTTM lesions. These findings suggest that inflammation associated with the interaction between osteopontin and CD44 may play an important role in PTTM.
    Full-text · Article · Nov 2015 · Internal Medicine
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    ABSTRACT: Electrocardiographic left ventricular hypertrophy (ECG-LVH) gradually regressed after aortic valve replacement (AVR) in patients with severe aortic stenosis. Sokolow-Lyon voltage (SV1 + RV5/6) is possibly the most widely used criterion for ECG-LVH. The aim of this study was to determine whether decrease in Sokolow-Lyon voltage reflects left ventricular reverse remodeling detected by echocardiography after AVR. Of 129 consecutive patients who underwent AVR for severe aortic stenosis, 38 patients with preoperative ECG-LVH, defined by SV1 + RV5/6 of ≥3.5 mV, were enrolled in this study. Electrocardiography and echocardiography were performed preoperatively and 1 year postoperatively. The patients were divided into ECG-LVH regression group (n = 19) and non-regression group (n = 19) according to the median value of the absolute regression in SV1 + RV5/6. Multivariate logistic regression analysis was performed to assess determinants of ECG-LVH regression among echocardiographic indices. ECG-LVH regression group showed significantly greater decrease in left ventricular mass index and left ventricular dimensions than Non-regression group. ECG-LVH regression was independently determined by decrease in the left ventricular mass index [odds ratio (OR) 1.28, 95 % confidence interval (CI) 1.03-1.69, p = 0.048], left ventricular end-diastolic dimension (OR 1.18, 95 % CI 1.03-1.41, p = 0.014), and left ventricular end-systolic dimension (OR 1.24, 95 % CI 1.06-1.52, p = 0.0047). ECG-LVH regression could be a marker of the effect of AVR on both reducing the left ventricular mass index and left ventricular dimensions. The effect of AVR on reverse remodeling can be estimated, at least in part, by regression of ECG-LVH.
    No preview · Article · Nov 2015 · Heart and Vessels
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    ABSTRACT: Objective: It is clinically important to recognize how the underweight or obese affects electrocardiogram (ECG). We assessed the effects of body mass index (BMI) on QRS axis or R-wave heights. Methods: From daily outpatient electrocardiograms with sinus rhythm, 203 were selected. The patients were classified into four groups: underweight (<18.5kg/m2), normal weight (18.5-24.9kg/m2), overweight (25-29.9kg/m2) and obese (≥30kg/m2). Results: With increasing BMI, QRS axis shifted rightward to leftward. There was a significant inverse correlation between BMI and QRS axis (r. =. -. 0.60, p. <. 0.001). Multivariate linear regression analysis among age, female, BMI, hypertension, left ventricular internal dimension and left ventricular mass (LVM) revealed that BMI was an independent determinant of QRS axis (β. =. -. 0.52, p. <. 0.0001). Although LVM increased with increasing BMI, R-wave heights in leads V4-5 were similar among the underweight, normal weight and overweight. R-wave heights in leads V4-5 were significantly lower paradoxically in the obese than other groups. With increasing BMI, Sokolow-Lyon index corrected by LVM decreased progressively. Conclusions: Our results suggest that the underweight or obese is strongly associated with QRS axis or R-wave heights.
    Full-text · Article · Oct 2015 · IJC Metabolic and Endocrine
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    ABSTRACT: Objective Periprocedural myocardial injury (PMI) remains a relatively common complication even after successful procedures. In-stent restenosis (ISR) may be involved in lesion-related factors for PMI. We compared the incidence of PMI between patients with ISR and those with de novo stenosis. Methods The study population consisted of 121 patients with coronary artery disease who had been treated with statins and subsequently underwent angiographically successful percutaneous coronary intervention (PCI). Blood samples for troponin I were collected 18 to 24 hours after PCI. PMI was defined as an increase in the troponin I levels greater than 0.15 ng/mL. Major PMI was defined as an increase in the troponin I levels greater than 0.75 ng/mL. Results There were 34 patients with ISR and 87 patients with de novo stenosis. The incidence of PMI was similar between the two groups (47.1 % vs. 55.2 %, p=0.42). Among the patients with ISR, the incidences of PMI were 33.3 %, 60.0 % and 66.7 % in patients with focal ISR, diffuse ISR and diffuse proliferative ISR, respectively, although these differences were not statistically significant. The incidence of major PMI was significantly less frequent in patients with ISR than those with de novo stenosis (5.9 % vs. 25.3 %, p=0.03). A multivariate logistic regression analysis showed that ISR [odds ratio (OR) 0.22, 95% confidence interval (CI) 0.03-0.90; p=0.03] and the maximum inflation pressure (OR 1.15, 95% CI 1.04-1.30; p=0.009) were independent predictors of major PMI. Conclusion Our results suggest that while PMI occurs in patients with ISR as commonly as those with de novo stenosis, major PMI occurs less frequently in patients with ISR.
    No preview · Article · Sep 2015 · Internal Medicine
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    ABSTRACT: We assessed the accuracy of left ventricular end-diastolic volume (EDV), end-systolic volume (ESV), and ejection fraction (EF) using quantitative gated single-photon emission computed tomography (QGS) in comparison with echocardiography as the reference standard. We also assessed the effects of total perfusion deficit (TPD) on the accuracy of QGS measurements. A total of 258 patients underwent single-photon emission computed tomography and transthoracic echocardiography within 4 weeks of each investigation for evaluating coronary artery disease. Patients were divided into four groups according to TPD scores. There were 138 patients with no/minimal TPD, 64 patients with small TPD, 35 patients with middle TPD, and 21 patients with large TPD. There were good correlations and agreements in EDV (r=0.87, 0.90, 0.71, and 0.94, respectively), ESV (r=0.92, 0.94, 0.79, and 0.94, respectively), and EF (r=0.61, 0.79, 0.61, and 0.83, respectively) between QGS and echocardiography in patients with any TPD. QGS significantly underestimated EDV and ESV in patients with no/minimal or small TPD, and significantly overestimated ESV in patients with large TPD. QGS significantly underestimated EF in patients with middle or large TPD. Our results suggest that QGS is a useful tool for assessing the left ventricular volume and function in patients with any TPD, but myocardial perfusion abnormalities should be taken into consideration when interpreting QRS measurements.
    No preview · Article · Aug 2015 · Nuclear Medicine Communications
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    ABSTRACT: Background: Aortic knob width on chest radiography is independently related to cardiovascular disease. However, little is known about the correlation between aortic knob width and central hemodynamics. Methods: Central blood pressure was measured invasively with diagnostic catheter in 92 patients with known or suspected coronary artery disease. Results: Aortic knob width was positively associated with age (r = 0.42; p < 0.001), central systolic blood pressure (r = 0.35; p < 0.001) and central pulse pressure (r = 0.34; p < 0.001). Multivariate analysis showed that larger aortic knob width was independently related to the higher central systolic blood pressure. Conclusions: Lager aortic knob width on chest radiography is an independent predictor of increase of central systolic blood pressure.
    No preview · Article · Aug 2015 · Clinical and Experimental Hypertension
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    ABSTRACT: Objective Analyses of arterial blood gas parameters, including pH, HCO3- and lactate, play an important role in assessing the clinical status of patients with heart failure. In the present study, we evaluated the degree of agreement in the pH, HCO3- and lactate levels between arterial and venous blood samples according to the subset of the Forrester classification. Methods The study population consisted of 128 patients with known or suspected heart failure. The subjects were divided into four groups based on the Forrester classification. Arterial blood samples were drawn from the radial or brachial artery, and venous blood samples were drawn from the pulmonary artery. Results There were 59 patients with a Forrester subset I status, 32 patients with a subset II status, 21 patients with a subset III status and 16 patients with a subset IV status. The pH and HCO3- levels were similar between the four subsets. In all subsets, the pH values were significantly higher and the HCO3- values were significantly lower in the arterial blood samples than in the venous blood samples. There was good correlation and agreement in the pH and HCO3- levels between the arterial and venous blood samples. In contrast, there was a significant difference in the lactate levels in both the arterial and venous blood samples between the four subsets, and the lactate levels were highest in subset IV. In all subsets, there was good correlation and agreement in the lactate levels between the arterial and venous blood samples. Conclusion These data suggest that the venous pH, HCO3- and lactate levels are acceptable substitutes for arterial parameters, regardless of the cardiac hemodynamics.
    Full-text · Article · Aug 2015 · Internal Medicine
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    ABSTRACT: Recent studies have shown that arterial stiffness is reduced after meal intake. We evaluated the acute response of central hemodynamics to glucose loading and the variation in their responses among normal glucose tolerance (NGT), impaired glucose tolerance (IGT), and diabetes mellitus (DM). The study enrolled 85 patients with known or suspected coronary artery disease who underwent a 75-g oral glucose tolerance test. Central hemodynamic measurements were assessed using radial applanation tonometry at fasting, 60, and 120 minutes after glucose loading. Glucose loading decreased the augmentation index normalized to a heart rate of 75 bpm (AIx@75) (81.6±13.9 to 74.5±14.1%, P < 0.01) and central systolic blood pressure (SBP) (115±22 to 109±21mm Hg, P < 0.01) at 120 minutes without a significant change in brachial SBP (126±25 to 125±25mm Hg, P = 0.93). Glucose loading decreased central SBP in NGT and IGT groups but did not affect the DM group. Change in AIx@75 at 120 minutes after glucose loading was blunted in IGT and DM groups compared with the NGT group (-5.7±4.4 vs. -3.6±4.1 vs. -9.3±6.2%, P < 0.01). Multivariate logistic regression analysis identified DM as an independent factor associated with the presence of blunted response of AIx to glucose loading. Oral glucose loading decreased central SBP and AIx@75 without a significant change in brachial SBP, and these central hemodynamic responses were blunted in patients with DM. © American Journal of Hypertension, Ltd 2015. All rights reserved. For Permissions, please email: journals.permissions@oup.com.
    No preview · Article · Jul 2015 · American Journal of Hypertension
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    ABSTRACT: Mean platelet volume (MPV) is a well-established marker of platelet activation. In the current study, we compared MPV between patients with aortic valve stenosis (AS) and control subjects. We also assessed the association between MPV and left ventricular geometry in patients with AS. The study population consisted of 75 patients with AS and 38 age- and sex-matched control subjects. In patients with AS, peak pressure gradient was 83.0 ± 30.8 mm Hg. MPV was significantly larger in patients with AS than control subjects (10.57 ± 1.05 fl versus 9.72 ± 0.66 fl, p < 0.001). There was a significant association between peak pressure gradient and MPV in 75 patients with AS and 38 control subjects (r = 0.35, p < 0.001). Among the patients with AS, there were 12 patients with normal geometry, 10 patients with concentric remodeling, 14 patients with eccentric hypertrophy and 39 patients with concentric hypertrophy. There was no significant difference in MPV among the four groups. There was no significant association between MPV and LVM index. Our data suggested that MPV increased in patients with AS, but did not reflect left ventricular geometry.
    No preview · Article · Jul 2015 · Clinical and Experimental Hypertension

  • No preview · Article · Mar 2015 · JACC Cardiovascular Interventions
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    ABSTRACT: Regeneration of R-wave or disappearance of Q-wave sometimes occurs after myocardial infarction (MI) especially in the coronary intervention era. We assessed the impact of poor R-wave progression (PRWP) or residual R-wave in precordial leads on myocardial infarct size in patients with prior anterior MI treated with coronary intervention. Methods: Fifty-three patients with prior anterior MI and 20 age- and sex-matched patients without underwent electrocardiogram (ECG), myocardial perfusion single photon emission tomography (SPECT) and echocardiography. Poor R-wave progression (PRWP) was defined as RV3. ≤. 3. mm. Results: R-wave was significantly lower in all precordial leads in patients with prior anterior MI than those without. Among 53 patients with prior anterior MI, 33 patients had PRWP, and the remaining 20 patients did not. Patients with PRWP had larger sum of defect score (17.5. ±. 8.6 vs 7.6. ±. 10.3, p. <. 0.001) and lower left ventricular ejection fraction (LVEF) (46.1. ±. 9.8% vs 55.2. ±. 12.9%, p. <. 0.01) than those without. The sum of R-wave in lead V1 to V6 inversely correlated with the sum of defect score (r. =. -. 0.56, p. <. 0.001), and positively correlated with LVEF (r. =. 0.45, p. <. 0.001). Conclusion: Our data suggested that residual R-wave during the follow-up period reflected myocardial infarct size and left ventricular systolic function well in patients with prior anterior MI treated with coronary intervention.
    Full-text · Article · Mar 2015
  • Hiroki Ikenaga · Satoshi Kurisu · Yasuki Kihara

    No preview · Article · Mar 2015 · Revista Espanola de Cardiologia
  • Hiroki Ikenaga · Satoshi Kurisu · Yasuki Kihara

    No preview · Article · Mar 2015 · Revista Espa de Cardiologia
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    ABSTRACT: Background We evaluated the diagnostic value of resting echocardiographic findings including total heart calcification (THC) score in combination with dobutamine stress echocardiography (DSE) for detection of myocardial ischemia.Methods Altogether, 110 patients with suspected angina pectoris underwent resting echocardiography and DSE. On the basis of resting echocardiography, we determined the THC score, left anterior descending artery diastole-to-systole velocity ratio (LAD-DSVR), and positive myocardial velocity during isovolumic relaxation phase (VIVR) detected by color-coded tissue Doppler imaging. Myocardial ischemia was diagnosed by a 25% or greater reduction in the internal diameter of major coronary vessels with impaired fractional flow reserve (FFR ≤0.80).ResultsDSE had excellent specificity (89%) but modest sensitivity (52%) for wall-motion abnormality (WMA) analysis. Multivariate analysis showed that THC score ≥2 (odds ratio and 95% confidence interval: 4.49 [2.29–10.6]; P = 0.018), LAD-DSVR ≤1.5 (6.43 [1.39–20.3], P = 0.019), and duration of positive VIVR ≥71 msec (7.93 [3.72–12.1]; P < 0.001) were independent predictors of ischemia. The combination of inducible WMA and THC score yielded significantly higher sensitivity for ischemia detection than the inducible WMA alone (80% vs. 52%, P = 0.0008). Using receiver operating characteristics analyses, adding all three resting echocardiographic findings to clinical variables plus inducible WMA further improved prediction of ischemia (P = 0.028).Conclusions Integration of DSE and resting echocardiographic findings describing degree of heart calcification, impaired LAD flow, and extent of delayed ejection motion of the myocardium improves detection of coronary angiogram-based FFR-guided ischemia.
    No preview · Article · Feb 2015 · Echocardiography
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    ABSTRACT: Background: Aortic valve stenosis (AS) is characterized by chronic left ventricular pressure overload, leading to left ventricular hypertrophy (LVH). We assessed correlations in left ventricular volumes and function between echocardiography and quantitative gated SPECT (QGS) in patients with AS. Methods and results: The study population consisted of 28 patients with AS defined as a peak velocity of >3.0m/s and 28 age- and sex-matched control subjects. Patients with AS had a peak pressure gradient of 73.4±24.5mmHg and a larger LVM index compared to control subjects (115.5±29.2g/m2 vs 78.3±12.1g/m2, p<0.01). There were good correlations in end-diastolic volume and end-systolic volume between echocardiography and QGS in patients with AS as well as control subjects. Bland-Altman plot for end-systolic volume showed a significant negative slope of -0.51 in patients with AS. There was a good correlation in ejection fraction between the 2 methods in patients with AS as well as control subjects. However, Bland-Altman plots showed significant negative slopes of -0.40 in patients with AS and -0.74 in control subjects. Conclusions: Our data suggested that QGS was a useful method for assessing left ventricular volumes and function even in patients with AS. Cardiologists should recognize its specific characteristics.
    Full-text · Article · Dec 2014
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    ABSTRACT: Mean platelet volume (MPV) is a well-established marker of platelet activation, and recent studies have shown that platelet activation is central to the processes in the pathophysiology of coronary artery disease (CAD). The study population consisted of 45 patients with stable CAD who underwent successful percutaneous coronary intervention (PCI) with drug-eluting stents. We selected 45 age- and sex-matched control subjects without cardiovascular diseases who did not require antiplatelet therapy. Hematological test was performed 3 times within 1 month before DAPT (baseline), at 2 weeks after PCI (post PCI) and at 9 months after PCI (follow-up). Compared to control subjects, MPV was significantly larger in patients with CAD (10.0 ± 0.6 vs 10.7 ± 0.8 fl, p < 0.01) although there was no significant difference in white blood cell count, hemoglobin, and platelet count between the 2 groups. In patients with CAD, DAPT did not affect platelet count (19.3 ± 4.8 × 10(4)-18.9 ± 4.6 × 10(4)/μl) or MPV (10.7 ± 0.8-10.5 ± 0.9 fl) during the follow-up period. MPV remained to be higher at follow-up in patients with CAD despite DAPT compared to control subjects (10.1 ± 0.7 vs 10.5 ± 0.9 fl, p < 0.05). Our data suggested that MPV might not be suitable for monitoring the effects of DAPT on platelet activity in patients with CAD undergoing PCI.
    No preview · Article · Nov 2014 · Heart and Vessels
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    Satoshi Kurisu · Yasuki Kihara

    Full-text · Article · Oct 2014 · Journal of Cardiac Failure
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    ABSTRACT: Background : Both aortic aneurysms and coronary artery ectasia (CAE) frequently coexist and are associated with more pronounced inflammation. Neutrophil to lymphocyte ratio (NL ratio) is widely used as a marker of inflammation. However, relation between CAE and NL ratio in patients with aortic aneurysms is not fully understood. This study was undertaken to assess relation between CAE and NL ratio in patients with aortic aneurysms. Methods : This study consisted of 93 consecutive patients with aortic aneurysms (AA group) and 79 patients without aortic aneurysms who had angiographically normal coronary arteries as the control group. Moreover, patients with aortic aneurysms were classified into two groups based on presence of CAE; CAE (+) group (n = 44) and CAE (−) group (n = 49). We compared blood chemical parameters in the both groups. Results : In the AA group, 44 patients (47.3%) had CAE. The AA group had a significantly higher NL ratio than the control group (2.93 ± 1.43 vs. 2.45 ± 1.05, p = 0.027). Furthermore, the CAE (+) group had a significantly higher NL ratio than the CAE (−) group (3.39 ± 1.67 vs. 2.52 ± 1.04, p < 0.01). Multivariate logistic regression analysis revealed that high NL ratio was an independent predictor for CAE in patients with aortic aneurysms (odds ratio 1.76, 95% confidence interval 1.24–2.69, p = 0.001). Conclusions : Patients with aortic aneurysms had significantly higher NL ratio than those without aortic aneurysms. Furthermore, NL ratio might predict presence of CAE in patients with aortic aneurysms.
    Full-text · Article · Aug 2014 · IJC Heart and Vessels

Publication Stats

3k Citations
748.93 Total Impact Points

Institutions

  • 1999-2015
    • Hiroshima University
      • • Department of Cardiovascular Medicine
      • • School of Medicine
      Hirosima, Hiroshima, Japan
  • 1995-2012
    • Hiroshima City Hospital
      Hirosima, Hiroshima, Japan