title: Circadian rhythms of ECG T-wave, arterial pressure and heart rate in patients with ischemic heart disease.
abstract: Analysis of the data of 25 healthy subjects and 141 patients with IHD revealed circadian rhythms of heart rate, systolic and diastolic arterial pressure and ECG T-wave voltage both in patients and controls. On the basis of data obtained we conclude that circadian rhythms of heart rate and arterial pressure level in patients with IHD are changed as compared with the data of controls. This change is apparent in the alteration of the acrophase and amplitude in some cases and especially in the mesor alteration of the rhythm in others. Circadian rhythms of T-wave voltage in different leads in controls is characterized by the occurrence of acrophase at midday or in the evening hours. In patients with IHD the acrophase mainly occurs in the early morning hours or at night. These data acquire practical importance in prevention and pharmacological manipulation of IHD.
mesh_terms: D000328:Adult; D000368:Aged; D001794:Blood Pressure; D002940:Circadian Rhythm; D003327:Coronary Disease / Q000503:physiopathology*; D004562:Electrocardiography; D006339:Heart Rate; D006801:Humans; D008875:Middle Aged