SUBENDOCARDIAL HEMORRHAGE

Left Ventricular Subendocardial Ischemia

Severe valvar aortic stenosis (VAS) and supravalvar aortic stenosis (SVAS) each may cause left ventricular (LV) subendocardial ischemia and infarction, even with patent coronary arteries. LV ischemia in VAS has been related to reduced coronary perfusion relative to raised metabolic requirements, whereas this mechanism of ischemia has not been widely accepted in SVAS because coronary perfusion p...

A Case of Subendocardial Infarction.

Disease of the coronary arteries, by commoner occurrence or by more frequent diagnosis, is assuming increasing importance in clinical medicine. The following case is reported because it shows some interesting features, and full clinical, cardiographic, and pathological investigation was possible. A schoolmaster, aged 55, was admitted to hospital on November 16, 1941, with a three weeks' history...

Why is myocardial ischaemia so commonly subendocardial?

A rare cause of subendocardial ischemia.

Figure 1 Transthoracic echocardiography showing: (A) mechanical aortic valve (21-mm Medtronic with mild regurgitation, possibly periprosthetic; (B) elevated transvalvular gradients (maximum 51 mmHg and mean 24 mmHg); acceleration time 89 ms, left ventricular outflow tract velocity time integral/aortic velocity time integral 0.29 and area index 0.83 cm/m, suggestive of mismatch and/or increased ...

Subendocardial and Subepicardial Dysfunction During Acute Ischemia

The effects of digitalis (ouabain infusion, priming dose of 10 Ag/kg/min followed by 2.0 gg/kg/min) on subepicardial and subendocardial ischemic dysfunction during partial occlusion (59.4% reduction in coronary flow) and total coronary occlusion were evaluated in 14 dogs using pairs of ultrasonic crystals implanted in the epicardial and endocardial layers. After 30 minutes of partial coronary o...