Classification of non-Q-wave myocardial infarction according to electrocardiographic changes.

H Ogawa, K Hiramori, K Haze, M Saito, T Sumiyoshi, K Fukami, Y Goto, M Ikeda

The characteristics of 93 patients in whom electrocardiographic recordings were obtained within 12 hours of the onset of non-Q-wave myocardial infarction were studied. Patients were divided into the three groups according to what electrocardiographic changes were seen. Forty nine patients had ST segment depression, 35 had ST segment elevation, and nine had T wave changes. Patients with ST segment depression had a higher rate of pump failure and multivessel disease than the other two groups. There were no significant differences in peak serum creatine kinase activity among the three groups. Twelve of 13 patients who died of non-Q-wave myocardial infarction in hospital had ST segment depression. Furthermore nine of them had attacks of non-Q-wave myocardial infarction with severe ST segment depression in many leads. At necropsy five of six patients who had shown severe ST segment depressions in many leads at the onset of non-Q-wave myocardial infarction were found to have circumferential subendocardial lesions with triple vessel disease. This study suggests there are electrocardiographic subtypes of non-Q-wave myocardial infarction that are associated with specific patient characteristics.

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

• Hersi, A., Fu, Y., Wong, B., Mahaffey, K.W., Harrington, R.A., Califf, R.M., Van de Werf, F., Armstrong, P.W., for the PARAGON-B Investigators, (2003). Does the discharge ECG provide additional prognostic insight(s) in non-ST elevation ACS patients from that acquired on admission?. Eur Heart J 24: 522-531 [Abstract] [Full Text]  
• Barrabes, J. A., Figueras, J., Moure, C., Cortadellas, J., Soler-Soler, J. (2000). Prognostic significance of ST segment depression in lateral leads I, aVL, V5 and V6 on the admission electrocardiogram in patients with a first acute myocardial infarction without ST segment elevation. J Am Coll Cardiol 35: 1813-1819 [Abstract] [Full Text]  
• Hussain, K.M.A., Gould, L., Pomerantsev, E.V., Angirekula, M., Bharathan, T. (1995). Pacing-Induced ST Segment Deviation in Patients with Unstable Angina: Clinical, Angiographic, and Hemodynamic Correlation. ANGIOLOGY 46: 567-576 [Abstract]  
• Kouvaras, G., Chronopoulos, G., Cokkinos, D. V. (1988). Q and Non-Q Wave Myocardial Infarction: Current Views. ANGIOLOGY 39: 333-340 [Abstract]