[Analysis of ECG in ventricular fibrillation in man and animals based on chaos theory].
The methods of the chaos theory were used to estimate the degree of irregularity of ventricular fibrillation in human and experimental animals. To verify the hypothesis that the degree of chaos depends on the species of the living organisms, the parameters characterizing the degrees of irregularity of ventricular fibrillation were estimated and compared. The comparative analysis was performed using 32 fragments of electrocardiographic records from five patients with sudden ventricular fibrillation bouts and 215 episodes of induced fibrillation in 17 animals. It was shown that fibrillation in human and animals has a different degree of regularity and different values of the chaotic component. The highest values of chaos were recorded in dogs, the lowest degree of chaos was observed in human. Rabbits and rats are intermediate, between dogs and humans. The fractuality of the structure-function organization of myocardium is discussed.
Mezentseva
L V
LV
Anokhin Research Institute of Normal Physiology, Russian Academy of Medical Sciences, ul. Bol'shaya Nikitskaya 6, korp. 4, Moscow, 103009 Russia.
Kashtanov
S I
SI
Vostrikov
V A
VA
Zviagintseva
M A
MA
Kosharskaia
I L
IL
D000818:Animals; D004285:Dogs; D004562:Electrocardiography; D006801:Humans; D017711:Nonlinear Dynamics; D011817:Rabbits; D051381:Rats; D017208:Rats, Wistar; D014693:Ventricular Fibrillation / Q000503:physiopathology*