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No data exists regarding the contribution of atrial contraction to the cyclic variation of integrated backscatter (CVIB) in the left ventricle (LV). We, therefore, examined 20 healthy volunteers and 12 lone atrial fibrillation patients using 2-D format IB analyzing system (SONOS 2500). IB data were obtained from the LV posterior wall (LVPW) and the septum (IVS) by the long-axis and the short-axis...
Considerable controversy exists regarding myocardial damage in diabetes mellitus (DM) as little clinical data is available in prediabetic patients. The OLETF rats have been established as an animal model of DM. In this strain, hyperglycemia is evident spontaneously from 14 weeks of age. We performed transmittal pulsed Doppler examination in 20 OLETF and 20 non-DM rats (CONT). All were male and...
Background: Few quantitative data exist regarding the relationship between coronary microvascular damage and myocardial viability in myocardial infarction.Methods: We simultaneously recorded coronary flow pattern in the anterior descending artery using Doppler guidewire and ostial pressure after 3 months of anteroseptal infarction in 46 pts (male/female: 3214, mean age 61 years old). In all, no angiographical...
Objectives: The purpose of the present study was to evaluate the feasibility of diagnosing vasospastic angina based on coronary artery tone as assessed by M-mode echocardiographic measurement of the dilation response of the left main coronary artery to nitroglycerin. Background: The definite diagnosis of vasospastic angina is done by a coronary spasm provocative test using ergonovine maleate or acetylcholine...
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