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Interplay Between Myocardial Bridging and Coronary Spasm in Patients With Myocardial Ischemia and Non-Obstructive Coronary Arteries: Pathogenic and Prognostic Implications.
- Source :
-
Journal of the American Heart Association [J Am Heart Assoc] 2021 Jul 20; Vol. 10 (14), pp. e020535. Date of Electronic Publication: 2021 Jul 14. - Publication Year :
- 2021
-
Abstract
- Background Myocardial bridging (MB) may represent a cause of myocardial ischemia in patients with non-obstructive coronary artery disease (NOCAD). Herein, we assessed the interplay between MB and coronary vasomotor disorders, also evaluating their prognostic relevance in patients with myocardial infarction and non-obstructive coronary arteries (MINOCA) or stable NOCAD. Methods and Results We prospectively enrolled patients with NOCAD undergoing intracoronary acetylcholine provocative test. The incidence of major adverse cardiac events, defined as the composite of cardiac death, non-fatal myocardial infarction, and rehospitalization for unstable angina, was assessed at follow-up. We also assessed angina status using Seattle Angina Questionnaires summary score. We enrolled 310 patients (mean age, 60.6±11.9; 136 [43.9%] men; 169 [54.5%] stable NOCAD and 141 [45.5%] MINOCA). MB was found in 53 (17.1%) patients. MB and a positive acetylcholine test coexisted more frequently in patients with MINOCA versus stable NOCAD. MB was an independent predictor of positive acetylcholine test and MINOCA. At follow-up (median, 22 months; interquartile range, 13-32), patients with MB had a higher rate of major adverse cardiac events, mainly driven by a higher rate of hospitalization attributable to angina, and a lower Seattle Angina Questionnaires summary score (all P <0.001) compared with patients without MB. In particular, the group of patients with MB and a positive acetylcholine test had the worst prognosis. Conclusions Among patients with NOCAD, coronary spasm associated with MB may predict a worse clinical presentation with MINOCA and a higher rate of hospitalization attributable to angina at long-term follow-up with a low rate of hard events.
- Subjects :
- Acetylcholine administration & dosage
Coronary Angiography
Coronary Artery Disease diagnosis
Coronary Artery Disease epidemiology
Coronary Vasospasm physiopathology
Coronary Vessels drug effects
Coronary Vessels physiopathology
Diagnosis, Differential
Female
Follow-Up Studies
Humans
Incidence
Injections, Intra-Arterial
Male
Middle Aged
Myocardial Bridging diagnosis
Myocardial Bridging epidemiology
Myocardial Ischemia diagnosis
Myocardial Ischemia epidemiology
Prognosis
Prospective Studies
Risk Factors
Rome epidemiology
Vasodilation drug effects
Vasodilator Agents administration & dosage
Coronary Artery Disease etiology
Coronary Vasospasm diagnosis
Coronary Vessels diagnostic imaging
Electrocardiography
Myocardial Bridging complications
Myocardial Ischemia etiology
Subjects
Details
- Language :
- English
- ISSN :
- 2047-9980
- Volume :
- 10
- Issue :
- 14
- Database :
- MEDLINE
- Journal :
- Journal of the American Heart Association
- Publication Type :
- Academic Journal
- Accession number :
- 34259010
- Full Text :
- https://doi.org/10.1161/JAHA.120.020535