Transmural myocardial flow distribution during hypothermia
نویسندگان
چکیده
منابع مشابه
Transmural distribution of myocardial blood flow during systole in the awake dog.
This study was designed to quantitate transmural myocardial blood flow when coronary arterial inflow was limited to systole and during the subsequent reactive hyperemic response. Studies were performed in 10 awake dogs chronically prepared with electromagnetic flowmeters and pneumatic occluders on the left circumflex coronary artery. Intermittent coronary perfusion, confined to the interval of ...
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OBJECTIVES We sought to resolve the 3-dimensional transmural heterogeneity in myocardial mechanics observed during the isovolumic contraction (IC) phase. BACKGROUND Although myocardial deformation during IC is expected to be little, recent tissue Doppler imaging studies suggest dynamic myocardial motions during this phase with biphasic longitudinal tissue velocities in left ventricular (LV) l...
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Increased heart rate and left ventricular pressure during humoral and neuronal adrenergic activation act to restrict blood flow preferentially in the subendocardium. The hypothesis was advanced that alpha-adrenergic coronary vasoconstriction preferentially in the subepicardium may counterbalance the enhanced extravascular compression in the subendocardium and serve to maintain blood flow transm...
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Slow coronary flow phenomenon(SCFP) is an angiographic observation characterized by delayed distal vessel opacification in the absence of significant epicardial coronary disease. Only limited studies have been focused on the etiologies, clinical manifestations and treatment of this unique angiographic phenomenon. In our case report, we described an 85-year-old man who came with significant ST s...
متن کاملTransmural right ventricular myocardial blood flow during systole in the awake dog.
This study was designed to quantify and compare transmural myocardial blood flow in the right and left ventricles of awake dogs during systole and diastole, and during total coronary artery occlusion. Studies were performed in six awake dogs chronically prepared with electromagnetic flowmeters and pneumatic occluders on the left circumflex and right coronary arteries. Intermittent coronary perf...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 1983
ISSN: 0022-5223
DOI: 10.1016/s0022-5223(19)39210-4