Observations on Heart Block During Continuous Electrocardiographic Monitoring in Myocardial Infarction
| Autor: | Daniel L. Macken, Richard J. Stock |
|---|---|
| Rok vydání: | 1968 |
| Předmět: |
medicine.medical_specialty
Heart block Myocardial Infarction Infarction Sudden death QT interval Electrocardiography Heart Conduction System Physiology (medical) Internal medicine medicine Humans Adams–Stokes syndrome cardiovascular diseases Myocardial infarction Monitoring Physiologic medicine.diagnostic_test business.industry medicine.disease Heart Block Anesthesia cardiovascular system Cardiology Electrical conduction system of the heart Cardiology and Cardiovascular Medicine business Adams-Stokes Syndrome |
| Zdroj: | Circulation. 38:993-1005 |
| ISSN: | 1524-4539 0009-7322 |
| DOI: | 10.1161/01.cir.38.5.993 |
| Popis: | Complete heart block (CHB) was observed in 24 of 350 patients with myocardial infarction who were studied under conditions of continuous electrocardiographic monitoring. CHB occurred predominantly in posterior and anteroseptal infarctions. In posterior infarction CHB was observed in patients who also developed first degree (1°) and types I and II second degree (2°-I and 2°-II) atrioventricular (A-V) block but not bundle-branch block (BBB). In anteroseptal infarction CHB was found in patients with BBB, occasionally in patients with 2°-II A-V block, but not in patients with 1° and 2°-I A-V block. Right BBB with a Q wave in lead V 1 was the usual form of BBB observed in patients with CHB and anteroseptal infarction. One mechanism for sudden death in anteroseptal infarction is the abrupt development of CHB following the onset of BBB. Evidence is presented attributing CHB to a lesion in the A-V node in posterior infarction and to bilateral BBB in anteroseptal infarction. |
| Databáze: | OpenAIRE |
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