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Validated original provocative ACh testing for VSA assessment (high-dose ACh boluses) and endothelial function assessment test (low-dose ACh boluses). Several alternatives to the original ACh test have been adopted in recent years, although not validated as the standard protocol.
ACh, acetylcholine; AF, atrial fibrillation; AV, atrioventricular; IC, intracoronary; LCA, left coronary arteries; RCA, right coronary artery; RV, right ventricle; VSA: vasospastic angina; µg, micrograms.
