title: [Effect of clonazepam and antiarrhythmic drugs on heart rate variability in patients with paroxysmal atrial fibrillation].
abstract: OBJECTIVE
  To study direction and intensity of autonomic changes in patients with paroxysmal atrial fibrillation (PAF) treated with clonazepam and their dynamics during antiarrhythmic therapy.
  
  
  METHODS
  Patients with nonrheumatic PAF during effective clonazepam monotherapy or ineffective antiarrhythmic therapy (n=95), untreated patients with PAF (n=22), healthy persons (n=10).
  
  
  METHODS
  Clinical cardiological and neurological examination, assessment of the state of autonomic nervous system, emotional sphere, patterns of sleep, and spectral analysis of heart rate variability (HRV).
  
  
  RESULTS
  Effective monotherapy with clonazepam was associated with clinical and psychovegetative improvement, positive changes of autonomic tone and normalization of vegetative support of activity of patients with PAF. Analysis of HRV showed that ineffective (insufficiently effective) antiarrhythmic therapy was associated with stabilization of cardiac rhythm and domination of ergotropic activation which correlated with severity of psychovegetative syndrome. This could be considered as indication for supplementary use of clonazepam.
  
  
  CONCLUSIONS
  Analysis of HRV confirmed expediency of the use of clonazepam in patients with PAF both as monotherapy and in combination with ineffective antiarrhythmic therapy.
authors.forename: N B
authors.initials: NB
authors.lastname: Khaspekova
authors.forename: A D
authors.initials: AD
authors.lastname: Solov'ëva
authors.forename: A V
authors.initials: AV
authors.lastname: Nedostup
authors.forename: T A
authors.initials: TA
authors.lastname: San'kova
mesh_terms: D000328:Adult; D000368:Aged; D000889:Anti-Arrhythmia Agents / Q000494:pharmacology* / Q000627:therapeutic use; D000927:Anticonvulsants / Q000494:pharmacology* / Q000627:therapeutic use; D001281:Atrial Fibrillation / Q000188:drug therapy* / Q000503:physiopathology*; D001341:Autonomic Nervous System / Q000187:drug effects; D002998:Clonazepam / Q000494:pharmacology* / Q000627:therapeutic use; D005260:Female; D006339:Heart Rate / Q000187:drug effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012720:Severity of Illness Index; D012890:Sleep / Q000187:drug effects; D013577:Syndrome
chemical_list: D000889:Anti-Arrhythmia Agents; D000927:Anticonvulsants; D002998:Clonazepam