[Chronostructure of ectopic heart activity in the acute phase of myocardial infarction].
7-day monitoring of cardiac rhythm has been conducted in 42 patients with myocardial infarction (MI) and 15 patients with chronic ischemic heart disease. Hour-by-hour analysis of extrasystole demonstrates that probability of ventricular arrhythmia is maximal in transmural MI, the first 3 days of acute MI are most arrhythmogenic. Follow-up of ventricular ectopic activity (VEA) showed the latter to significantly enhance early in the morning, afternoon and on the first 5 days after midnight. In unpenetrating MI, VEA intensifies in the morning, afternoon and postmidnight hoars. Atrial ectopic activity (AEA) in transmural MI enhances early in the morning, afternoon and at night (on the first 3 days). AEA in unpenetrating MI is more intensive late in the morning and afternoon.
Iakovlev
V A
VA
Tarasov
V A
VA
D000208:Acute Disease; D000368:Aged; D018880:Atrial Premature Complexes / Q000473:pathology; D005117:Cardiac Complexes, Premature / Q000209:etiology / Q000473:pathology*; D002940:Circadian Rhythm; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000473:pathology*; D013997:Time Factors; D018879:Ventricular Premature Complexes / Q000473:pathology