Myocardial Infarction and Atrial Arrhythmias | Zendy

Thomas N. James | Zendy

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Myocardial Infarction and Atrial Arrhythmias

Author(s) -

Thomas N. James

Publication year - 1961

Publication title -

circulation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.795

H-Index - 607

eISSN - 1524-4539

pISSN - 0009-7322

DOI - 10.1161/01.cir.24.4.761

Subject(s) - medicine , cardiology , myocardial infarction , infarction , chronotropic , occlusion , sinus (botany) , coronary arteries , artery , heart rate , blood pressure , botany , biology , genus

In each of 11 necropsied patients with myocardial infarction and atrial arrhythmias, a coronary occlusion was found proximal to the origin of the sinus node artery and there was infarction of the sinus node. The multiple factors influencing the onset of atrial arrhythmias during acute myocardial infarction are discussed. Infarction of the sinus node is only one of these factors. Other important ones are ischemia of the AV node, vagal and vagomimetic reflexes, atrial distention, and circulating chronotropic substances. By combination of a knowledge of the anatomy and pathology of the human coronary arteries with the observation of atrial arrhythmias during acute myocardial infarction, an accurate diagnosis of the point of coronary occlusion can often be made.

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