Document Detail

Myocardial bridging of the left anterior descending coronary artery in acute inferior wall myocardial infarction.
MedLine Citation:
PMID:  11288965     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: We observed marked myocardial bridging of the left anterior descending coronary artery (LAD) in the acute stages of inferior wall myocardial infarction (MI) in a group of patients who developed shock despite successful reperfusion of the infarct-related lesion (IRL). HYPOTHESIS: The purpose of this study was to elucidate the clinical significance of myocardial bridging in patients with inferior wall MI and shock. METHODS: The study group consisted of 53 patients with single-vessel disease of the right coronary artery, who underwent coronary angiography for acute inferior wall MI. Clinical characteristics, coronary angiographic findings, and left ventricular function during the chronic phase were compared between the patients who developed shock (the shock group) and those who did not (the non-shock group). In addition, a multiple logistic analysis was performed to identify independent predictors of shock in patients with acute inferior wall MI. RESULTS: Reperfusion of the IRL was obtained in all 53 patients. The incidence of myocardial bridging of the LAD, the incidence of right ventricular MI, the peak creatine phosphokinase (CPK-MB). the pulmonary capillary wedge pressure, and the prevalence of pulmonary congestion seen on chest roentgenogram were significantly higher in the shock group than in the non-shock group. Myocardial bridging (p = 0.0018), right ventricular MI (p = 0.0374), and peak CPK-MB (p = 0.0189) were identified as independent predictors of shock in acute inferior wall MI. CONCLUSION: This study suggests that myocardial bridging plays a role in left ventricular function in the acute stage of inferior wall MI.
K Yano; H Yoshino; M Taniuchi; E Kachi; H Shimizu; A Watanuki; K Ishikawa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical cardiology     Volume:  24     ISSN:  0160-9289     ISO Abbreviation:  Clin Cardiol     Publication Date:  2001 Mar 
Date Detail:
Created Date:  2001-04-05     Completed Date:  2001-07-26     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7903272     Medline TA:  Clin Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  202-8     Citation Subset:  IM    
Second Department of Internal Medicine, Kyorin University School of Medicine, Tokyo, Japan.
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MeSH Terms
Coronary Angiography
Middle Aged
Myocardial Infarction / complications,  pathology*,  radiography
Myocardium / pathology*
Shock, Cardiogenic / complications,  pathology
Ventricular Function, Left*

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