title: [Autonomic nervous system balance, variability and arrhythmia in survivors of myocardial infarction].
abstract: OBJECTIVE
  To investigate relations between heart rhythm variability (HRV), vegetative balance and electric myocardial activity in myocardial infarction (MI) survivors.
  
  
  METHODS
  HRV was studied by short 5-min parts of ECG and data of ECG Holter monitoring were analysed for 98 patients who had macrofocal MI 1.5 months to 5 years before.
  
  
  RESULTS
  Manifestations of electric heart instability were polymorphic. 69.4% examinees had hyperactivity of the parasympathetic nervous system (PSNS). The influence of the sympathetic nervous system (SNS) increased with growing severity of arrhythmia. Supraventricular arrhythmia occurred more frequently in high PSNS activity, while ventricular arrhythmia occurred more often in SNS prevalence combined with low HRV.
  
  
  CONCLUSIONS
  HRV analysis for MI survivors, especially in combination with Holter ECG monitoring, gives an objective assessment of various manifestations of cardiac dysfunction and therefore enables timely adequate therapy.
authors.forename: A P
authors.initials: AP
authors.lastname: Ivanov
authors.forename: I A
authors.initials: IA
authors.lastname: El'gardt
authors.forename: N S
authors.initials: NS
authors.lastname: Sdobniakova
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac / Q000150:complications / Q000503:physiopathology*; D001341:Autonomic Nervous System / Q000503:physiopathology*; D004562:Electrocardiography; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000503:physiopathology*