ASSESSMENT OF EJECTION FRACTION OF THE RIGHT AND LEFT VENTRICLES IN PATIENTS WITH ACUTE MYOCARDIAL INFARCTION BY MAGNETIC RESONANCE IMAGING
スポンサーリンク
概要
- 論文の詳細を見る
Right and left ventricular function in acute myocardial infarction (AMI) was assessed by ECG-gated magnetic resonance imagine (MRI) in 64 patients and 8 volunteers. Five short axis images for intrinsic cardiac long-axis of the left ventricle were obtained at 9 msec and 309 msec after the R wave as end-diastole and end-systole. Right and left ventricular volumes were measured by Simpson's rule. The intraobserver variabilities in right and left ventricular ejection fraction (RVEF: r=0.94, LVEF: 0.89) were excellent. The interobserver variabilities in RVEF (r=0.61) and LVEF (r=0.77) were fair. LVEF, but not RVEF, was significantly reduced in patients with AMI. Among left ventricular dysfunction (LVEF≦40%) patients, 50% exhibited right ventricular dysfunction (RVEF≦40%). Among patients without left ventricular dysfunction, only 12% exhibited right ventricular dysfunction. In left ventricular and biventricular dysfunction compared with control, the left ventricular end-diastolic volume index increased (65±10 ml/m^2, 68±12 ml/m^2 vs 54±8 ml/m^2), the end-systolic volume index increased (40±16 ml/m2, 43±7 ml/m2 vs 18±1 ml/m^2), and the right ventricular end-diastolic volume index decreased (52±13 ml/m^2, 53±20 ml/m^2 vs 65±8 ml/m^2). MRI can thus be used to assess ventricular systolic function. Since patients with left ventricular dysfunction revealed a high incidence of right ventricular dysfunction, an interaction between the left and right ventricles may occur in ventricular dysfunction.
- 社団法人日本循環器学会の論文
- 1993-06-20
著者
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Saito Satoshi
The Second Deparyment of Internal Medicine Nihon University School of medicine
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Ozawa Yukio
The Second Deparyment of Internal Medicine Nihon University School of medicine
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Ozawa Y
Department Of Cardiovascular Renal And Endocrine Medicines Research Center And Cardiovascular Functi
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Tamura Yasuo
Division Of Cardiology Department Of Medicine Nihon University School Of Medicine
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YASUGI Tadao
The Second Department of Internal Medicine,Nibon University School of Medicine
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Ozawa Yukio
The Second Department Of Internal Medicine Nihon University School Of Medicine
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Imai Kamon
The Second Department of Internal Medicine, Nihon University School of Medicine
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ZHANG YOUYI
The Second Department of Internal Medicine Nihon University School of Medicine
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Yasugi Tadao
The Second Department Of Internal Medicine Nihon University School Of Medicine
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Araki Yasushi
The Second Department Of Internal Medicines Nihon University School Of Medicine
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Nishino Yukari
The Second Department Of Internal Medicines Nihon University School Of Medicine
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Imai Kamon
The Second Department Of Internal Medicine Nihon University School Of Medicine
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Imai Kamon
The 2nd Department Of Internal Medicine And Radiology Nihon University
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Takagi Yasuhiro
The Second Department Of Medicine Nihon University Shool Of Medicine
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Saito Satoshi
The Second Department Of Internal Medicine Nihon University School Of Medicine
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