Usefulness of coronary spasm provocation test in patients received coronary stents

Determinants of Myocardial Lactate Production During Acetylcholine Provocation Test in Patients With Coronary Spasm.

BACKGROUND Myocardial lactate production in the coronary circulation during acetylcholine (ACh)-provocation test (abbreviated as lactate production) provides supporting evidence for coronary spasm-induced myocardial ischemia. The purpose of this study was to examine the clinical features, predictive factors, and prognosis of patients with coronary vasospastic angina (VSA) and lactate production...

Serial intravascular ultrasound observation of the behavior of coronary artery during a positive spasm provocation test.

asospastic angina can be diagnosed by several established provocation tests,1 including intracoronary acetylcholine (ACH) injection2 and the ergonovine loading test, during cardiac catheterization. These methods are also popular for evaluating local “endothelial function” where drug-eluting stents3 have been implanted.4 However, we do not fully understand the phenomenon of vasospastic angina be...

Provocation of coronary artery spasm by the cold pressor test. Hemodynamic, arteriographic and quantitative angiographic observations.

In this study we attempted to determine if the cold pressor test, a known sympathetic reflexogenic stimulus, could precipitate coronary artery spasm. Thirty-five patients undergoing coronary arteriography for evaluation of chest pain syndromes were given the cold pressor test. During 1 minute of cold pressor stimulation, aortic systolic pressure increased 18.1 ± 9.7 mm Hg (mean ± SD) and heart ...

Coronary Opacification in Patients with Coronary Stents

Importance of a second spasm provocation test: Four cases with an initial negative spasm provocation test

The spasm provocation test (SPT) is an important test in the diagnosis of vasospastic angina (VSA). In many cases, this test is performed as the gold standard test, and VSA is considered not present if the SPT is negative. However, some patients continue to experience chest symptoms despite a negative SPT. In this study, we report four cases in which SPT was repeated to evaluate chest symptoms ...