Left Ventricular Wall Motion Assessed by Using Fixed External Reference Systems
نویسندگان
چکیده
منابع مشابه
Should a fixed external reference system be used to analyze left ventricular wall motion?
To investigate whether a fixed external reference system should be used to most accurately describe regional left ventricular wall motion, we used vectors to analyze a simple model of ventricular contraction. If measured in a fixed external reference system, motion of implanted radiopaque midwall markers may contain translational as well as contractile components. Therefore, comparisons of diff...
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The effects of sublingual nitroglycerin (GTN) on left ventricular wall motion (LVWM) were examined by angiographic assessment in eight patients with anginal chest pain. Five of seven patients having occlusive coronary artery disease showed segmental abnormalities in LVWM characterized by regional hypokinesis or akinesis at rest. These abnormalities were accentuated by tachycardia induced by atr...
متن کاملLeft Ventricular Wall Motion
The effects of sublingual nitroglycerin (GTN) on left ventricular wall motion (LVWM) were examined by angiographic assessment in eight patients with anginal chest pain. Five of seven patients having occlusive coronary artery disease showed segmental abnormalities in LVWM characterized by regional hypokinesis or akinesis at rest. These abnormalities were accentuated by tachycardia induced by atr...
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Ultrasound echocardiograms from the septal and posterior left ventricular walls were displayed with a simultaneously recorded electrocardiogram, phonocardiogram, and indirect carotid pulse. These echoes differed in both amplitude and waveform. The contour of the posterior wall echo resembled an inverted ventricular volume curve, while the septal echo was of smaller amplitude and had a character...
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SYMPTOMS of myocardial ischemia occur in patients with either acquired or congenital aortic stenosis.1-8 The presence of normal coronary arteries in many of these subjects suggests that the cause of the cardiac pain relates to left ventricular outflow obstruction and not to coronary artery disease.1 2, 5, 8 Opinion differs regarding the symptomatic response of the chest pain to nitroglycerin,9'...
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ژورنال
عنوان ژورنال: Circulation
سال: 1973
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.48.5.1043