Intramyocardial Pressure during Systole and Diastole
نویسندگان
چکیده
منابع مشابه
The Ultrastructure of the Heart In Systole and Diastole
The relations between ultrastructure and function have been examined in the canine left ventricle under known hemodynamic conditions. Left ventricles of normal dogs were fixed acutely by rapid perfusions of the coronary arteries in either diastole or systole, and also following acute ventricular distension, or potentiation of contraction. Sarcomere lengths at the midwall of the left ventricle a...
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Impaired long-axis motion is a sensitive marker of systolic myocardial dysfunction, but no data are available that relate long-axis changes in systole with those in diastole, particularly in subjects with diastolic dysfunction and a 'normal' left ventricular (LV) ejection fraction. A total of 311 subjects (including 105 normal healthy volunteers) aged 20-89 years with variable degrees of systol...
متن کاملComparison of cardiac DTI parameters between systole and diastole
Results Two of the original 46 volunteers were excluded due to ECG irregularities. Data from one further volunteer was incomplete and therefore excluded from the final analysis. Results from the remaining 43 volunteers are in table 1. Global FA was higher in diastole than systole (0.56 v 0.47; p < 0.001). The global endocardial HA was significantly more right-handed in systole than diastole (34...
متن کاملFiber orientation in the canine left ventricle during diastole and systole.
Fiber orientation across the left ventricular myocardial wall has been studied. Specimens were obtained from 18 dog hearts rapidly fixed in situ in systole, in diastole, and in dilated diastole. Fiber orientation was determined across the free wall at eight sites from a T-shaped specimen by measurements with light microscopy in serial paraffin sections. Results indicate: (1) The wall has a well...
متن کاملEvaluation of myocardial volume heterogeneity during end-diastole and end-systole using cine MRI.
The aim of this study was to examine the difference in the myocardial volume between end-diastole and end-systole in 24 human volunteers, using steady-state free precession gradient-echo cine imaging of both long- and short-axis views of the left ventricle and a newly developed three-dimensional (3D) analysis method. In addition, we examined retrospectively the cine magnetic resonance imaging (...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1968
ISSN: 0003-4932
DOI: 10.1097/00000658-196811000-00013