Acetylcholine (ACh) rechallenge may be a novel method to improve detection of coexisting coronary spasm endotypes, and at the same time, assess the treatment response to nitrate-based therapies, a new ...
In patients with angina and no obstructive coronary artery disease (ANOCA), coronary vasospasm elicited by acetylcholine, regardless of phenotype, is associated with more-advanced atherosclerosis, ...