Clinical Feature of Non-Q Wave Myocardial infarction : Relationship with EKG Findings and Infarct Related Arteries.
10.4070/kcj.1996.26.1.52
- Author:
Jae Lyun LEE
;
Jun Ho SEOK
;
Jong Sun PARK
;
Dong Gu SHIN
;
Yeong Jo KIM
;
Bong Sup SHIM
- Publication Type:Original Article
- Keywords:
Non-Q wave myocardial infarction;
Infarct-related artery;
Electrocardiography
- MeSH:
Arteries*;
Classification;
Coronary Angiography;
Coronary Artery Disease;
Coronary Vessels;
Creatine;
Electrocardiography*;
Heart Failure;
Humans;
Myocardial Infarction*;
Prevalence;
Prognosis;
Retrospective Studies;
Risk Factors;
Stroke Volume
- From:Korean Circulation Journal
1996;26(1):52-61
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: Despite extensive investigation, the clinical features and prognostic significance of the non-Q wave myocardial infarction, when compared with Q wave myocardial infarction, remain controversial. And no definite relationship between EKG findings and infarct related arteries has been reported. METHOD: A retrospective analysis was done on 205 patient with acute myocardial infarction who were undergone coronary angiography and left ventriculography. Among them, 30 patient with non-Q wave myocardial infarction and 175 patients with Q wave myocardial infarction. RESULTS: 1) There was no significant difference between the two groups in risk factors, prevalence of preinfarct angina and preinfarct heart failure. 2) The faction of patients with non-Q wave myocardial infarction who received thromobolytic therapy was significantly less, compared to patient with Q wave myocardial infarction(p<0.0001). 3) The patients with non-Q wave myocardial infarction had a smaller infarct size estimated by peak creatine phosphokinase(p<0.01). But there was no difference in Killip's classification and left ventricular ejection fraction. 4) In patients with non-Q wave myocardial infarction, 87% of the patients had one or more abnormal EKG finding other than Q wave, and the most frequent abnormal finding was primary T wave change. 5) The location of infarct-related artery was significantly different between group(p<0.0001). The most frequently involved coronary artery in non-Q wave myocardial infarction was left circumflex coronary artery, especially in patients with normal EKG findings. 6) There was no significant difference between the two groups in the prognosis. CONCLUSION: There were significant differences between non-Q wave and Q wave myocardial infarction in the infarct size and the location of infarct related arteries. but not in the risk factors, the prevalence of previous coronary artery disease and prognsis. Further prospective and collaborative studies should be performed to define conclusion.
