The nitrates and myocardial ischemia.

The nitrates and myocardial ischemia.

Myocardial ischemia and viability

This paper addresses the question of whether and how MCG tests that assess ischemia or viability of the myocardium can add to the diagnostic information gained from standard procedures in asymptomatic and symptomatic patients. We review the diagnostic performance of the exercise electrocardiogram (ECG), the exercise and pharmacological (stress) echocardiogram, the exercise and pharmacological m...

Myocardial ischemia and infarction.

Background: Previous studies evaluating the influence of time-to-reperfusion on infarct size (IS) and myocardial salvage over time in patients with ST-segment elevation myocardial infarction (STEMI) yielded conflicting results. Cardiovascular magnetic resonance (CMR) can visualize areas of irreversible myocardial and microvascular injury (infarct size, IS and microvascular obstruction, MVO, res...

Ischemia-modified albumin and myocardial ischemia.

Sbarouni et al. (1) reported on “Ischemia-Modified Albumin [IMA] in Relation to Exercise Stress Testing [EST]” in a previous issue of the Journal. Although the investigators found significant differences in the IMA values at baseline, peak exercise, and after EST, there was no relation between the IMA changes and the result of the EST. The researchers stated that changes in IMA levels do not re...

Myocardial Ischemia

Difficulties in studying myocardial metabolism with adequate time resolution have led to contradictory conclusions regarding the mechanisms causing contractile abnormalities during the early stages of ischemia. In acutely instrumented swine, we investigated whether abnormalities in subendocardial ATP, phosphocreatine, or lactate content develop rapidly enough during the first few heart beats af...