Document Detail

Significance of Q-wave regression after anterior wall acute myocardial infarction.
MedLine Citation:
PMID:  9717007     Owner:  NLM     Status:  MEDLINE    
AIMS: This study was conducted to clarify the significance of abnormal Q-wave regression in anterior wall acute myocardial infarction. METHODS: A total of 74 patients who presented with a first anterior wall acute myocardial infarction within 6 h of onset were divided into two groups according to the presence (group A, n = 29) or absence (group B, n = 45) of regression of abnormal Q waves. Regression of abnormal Q waves was defined as the disappearance of the Q wave and the reappearance of the r wave > or = 0.1 mV in at least one of leads I, aVL, and V1 to V6. RESULTS: Emergency coronary arteriography revealed that group A had a higher incidence of spontaneous recanalization or good collateral circulation than group B (55% vs 31%, P < 0.05). Peak creatine kinase activity tended to be lower in group A than in group B (2358 +/- 1796 vs 3092 +/- 1946 IU.L-1, P = 0.09). Group A had a greater left ventricular ejection fraction and better regional wall motion at 1 and 6 months after acute myocardial infarction than group B. The degree of improvement of left ventricular ejection fraction and regional wall motion between 1 and 6 months after acute myocardial infarction was significantly greater in group A than in group B. CONCLUSION: Patients with anterior wall acute myocardial infarction showing Q-wave regression had a trend towards a smaller amount of necrotic myocardium and a significantly larger amount of stunned myocardium.
K Nagase; A Tamura; Y Mikuriya; M Nasu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European heart journal     Volume:  19     ISSN:  0195-668X     ISO Abbreviation:  Eur. Heart J.     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-12-11     Completed Date:  1998-12-11     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8006263     Medline TA:  Eur Heart J     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  742-6     Citation Subset:  IM    
Second Department of Internal Medicine, Oita Medical University, Japan.
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MeSH Terms
Collateral Circulation / physiology
Coronary Angiography*
Creatine Kinase / blood
Long QT Syndrome / physiopathology,  radiography*
Middle Aged
Myocardial Infarction / physiopathology,  radiography*
Myocardium / pathology
Remission, Spontaneous
Ventricular Function, Left / physiology
Reg. No./Substance:
EC Kinase

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