ATRIAL CONTRIBUTION TO VENTRICULAR FILLING IN PATIENTS WITH CORONARY ARTERY DISEASE AS ASSESSED BY CARDIAC PACING
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概要
- 論文の詳細を見る
Analysis of beat to changes in left ventricular (LV) ejection time during cardiac pacing was utilized to assess the atrial contribution to ventricular filling in coronary artery disease. The recordings of aortic pressure were made during atrial and ventricular pacing at a rate of 5 to 10 beats/min above sinus rhythm. During ventricular pacing, LV ejection time became maximum when an atrial contraction preceded a ventricular contraction by a physiologic interval and was similar to that obtained during atrial pacing (max ET). When the atrial systole occurred with or followed the paced ventricular contraction, LV ejection time became minimum (min ET). The atrial contribution was calculated as (max ET - min ET)/max ET × 100 (%). Patients with coronary artery disease had a significantly large atrial contribution. In patients without myocardial infarction, the atrial contribution was increased to compensate for impaired early diastolic filling. In patients with myocardial infarction, the atrial contribution was reduced when LV end-diastolic pressure was markedly high. The atrial contribution generally plays an important role in increasing stroke volume, but it had less effect despite the forceful atrial contraction as LV filling pressure became more elevated.
- 社団法人日本循環器学会の論文
- 1986-05-20
著者
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Toeda Tetsuro
The First Department of Internal Medicine, Niigata University School of Medicine
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Toeda Tetsuro
The First Department Of Internal Medicine Niigata University School Of Medicine
関連論文
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- THE ATRIAL CONTRIBUTION TO VENTRICULAR FILLING BY PACING METHOD IN PATIENTS WITH CORONARY ARTERY DISEASE OR CARDIOMYOPATHY : PROCEEDINGS OF THE 47th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY : Ventricular Function (I)
- THE DIFFERENCE OF LEFT VENTRICULAR DIASTOLIC FILLING AND SPECIFIC COMPLIANCE BEIWEEN HYPERTROPHIC CARDIOMYOPATHY AND DILATED CARDIOMYOPATHY : Ventricular Function : 46th Annual Scientific Meeting, Japanese Circulation Society
- FACTORS INFLUENCING THE ATRIAL CONTRIBUTION TO VENTRICULAR FILLING IN PATIENTS WITH VARIOUS CARDIAC LESIONS : Ventricular Function : PROCEEDINGS OF THE 50th ANNUAL SCIENTIFIC MEETING OF THE JAPANESE CIRCULATION SOCIETY
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- ATRIAL CONTRIBUTION TO VENTRICULAR FILLING IN PATIENTS WITH CORONARY ARTERY DISEASE AS ASSESSED BY CARDIAC PACING