Changes in ventricular depolarisation vectors during exercise caused by regional myocardial ischaemia
نویسندگان
چکیده
منابع مشابه
Detection of myocardial ischaemia caused by coronary artery-left ventricular fistulae using myocardial contrast echocardiography.
A coronary artery-left ventricular fistula (CAF) is an extremely rare anatomical abnormality in which blood drains directly from a coronary artery into the left ventricle. CAF may cause myocardial ischaemia and angina. Myocardial contrast echocardiography (MCE) is a non-invasive technique which assesses myocardial perfusion. We describe a patient with CAF in whom transmural myocardial ischaemia...
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Electrophysiological changes occurring soon after experimental coronary occlusion have been examined in 13 dogs by combined recording of epicardial action potential, endocardial-epicardial conduction time, and epicardial ST segment elevation during successive 5-minute occlusions of the left anterior descending coronary artery. Mter initial coronary occlusion, action potential duration shortened...
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BACKGROUND The objective of the study was to identify the parameter(s) of cardiopulmonary exercise testing (CPET) that can detect exercise-induced myocardial ischaemia (EIMI), and to determine its diagnostic accuracy for identifying patients with coronary artery disease (CAD). METHODS AND RESULTS We prospectively studied 202 consecutive patients (173 men, 29 women, mean age 55.7+/-10.8 years)...
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We compared the response of myocardial blood flow to exercise in normal dogs and in dogs with left ventricular hypertrophy (LVH) produced by banding the ascending aorta at 6-9 weeks of age. Blood flow was measured with 15-fim microspheres after the animals with LVH had reached adulthood when left ventricular:body weight ratios were approximately 80% greater than normal. During resting condition...
متن کاملLocalization of left ventricular ischaemia in angina pectoris by cineangiography during exercise.
Cineangiography of the left ventricle during exercise has been used in an attempt to define the area of ischaemic myocardium in patients suffering from angina pectoris in whom coronary artery surgery was contemplated. A correlation was established between the site of coronary artery obstruction and the area of abnormal myocardial contraction. This method of localization of regional left ventric...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2019
ISSN: 2045-2322
DOI: 10.1038/s41598-019-52869-0