Is Myocardial Infarction in Patients without Significant Stenosis on a Coronary Angiogram as Benign as Believed?

Chonnam Medical Journal
Shi Hyun RhewJung Chaee Kang

Abstract

The present study aimed to investigate the clinical characteristics and 1-year outcomes of acute myocardial infarction (AMI) patients without significant stenosis on a coronary angiogram comparison with the clinical characteristics and outcomes of patients with significant coronary artery stenosis. A total of 1,220 patients with AMI were retrospectively classified into Group I (≥50% diameter stenosis, n=1,120) and Group II (<50%, n=100). Group II was further divided into two subgroups according to the underlying etiology: cryptogenic (Group II-a, n=54) and those with possible causative factors (Group II-b, n=46). Patients in Group II were younger, were more likely to be women, and were less likely to smoke and to have diabetes mellitus than were patients in Group I. The levels of cardiac enzymes, LDL-cholesterol levels, and the apo-B/A1 ratio were lower in Group II. However, 1-month and 12-month rates of major adverse cardiac events (MACE) were not significantly different between the two groups. The Group II-b subgroup comprised 29 patients with vasospasm, 11 with myocardial bridge, and 6 with spontaneous thrombolysis. Left ventricular ejection fraction and creatinine clearance were lower and levels of N-terminal pro-brain natr...Continue Reading

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Citations

Dec 18, 2016·Journal of the American Heart Association·Carmine PizziLamberto Manzoli
Apr 7, 2018·The Egyptian Heart Journal : (EHJ) : Official Bulletin of the Egyptian Society of Cardiology·Yasser Yazied AbdelmonemMohammed Mahmoud Abdel Ghany

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Methods Mentioned

BETA
dissection
coronary artery bypass

Software Mentioned

MICAS
SPSS

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