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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

2021; Wiley; Volume: 10; Issue: 14 Linguagem: Inglês

10.1161/jaha.120.020535

ISSN

2047-9980

Autores

Rocco Antonio Montone, Filippo Luca Gurgoglione, Marco Giuseppe Del Buono, Riccardo Rinaldi, Maria Chiara Meucci, Giulia Iannaccone, Giulia La Vecchia, Massimiliano Camilli, Domenico D’Amario, Antonio Maria Leone, Rocco Vergallo, Cristina Aurigemma, Antonino Buffon, Enrico Romagnoli, Francesco Burzotta, Carlo Trani, Filippo Crea, Giampaolo Niccoli,

Tópico(s)

Takotsubo Cardiomyopathy and Associated Phenomena

Resumo

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

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