Clinical Usefulness, Angiographic Characteristics and Safety Evaluation of Intracoronary Acetylcholine Provocation Testing Among 921 Consecutive Caucasian Patients With Unobstructed Coronary Arteries

Study Questions:

What are the clinical usefulness, angiographic characteristics, and safety of the acetylcholine administration (ACH-test) in Caucasian patients with unobstructed coronaries?