Teragawa H, Oshita C, Ueda T. The Significance of Recognizing Myocardial Bridge in the Coronary Spasm Diagnosis in Myocardial Infarction with Nonobstructive Coronary Arteries.
Intern Med 2020;
59:89-92. [PMID:
31484908 PMCID:
PMC6995707 DOI:
10.2169/internalmedicine.3266-19]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
A 61-year-old man experienced chest oppression for 1 hour. He was positive for troponin T and underwent emergent coronary angiography (CAG), which did not reveal significant coronary stenosis. He was diagnosed with myocardial infarction with nonobstructive coronary arteries (MINOCA). We performed a spasm-provocation test, which revealed a focal spasm at the segment of the myocardial bridge. After receiving a calcium-channel blocker, he exhibited a good clinical course. Coronary spasm is considered an underlying cause of MINOCA; therefore, the presence of a myocardial bridge may help with the diagnosis.
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