Hilbert transform analysis of the relation between ventricular fibrillation voltage and the outcome of defibrillation shocks / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 512-516, 2006.
Article
Dans Chinois
| WPRIM
| ID: wpr-249565
ABSTRACT
The objective of this study is to evaluate the correlation between the absolute ventricular fibrillation voltage (AVFV) computed from electrocardiogram (ECG) and the outcome of defibrillation shocks. Orthogonal ECG (sagittal, x; transverse, y; and longitudinal, z) was recorded from 11 dogs during 10 seconds of electrically induced ventricular fibrillation followed by defibrillation shocks with 50% probability of success. The transvenous two-leads defibrillation system was used to deliver defibrillation shocks. The envelope voltage was estimated by using the Hilbert transform. The comparison of the envelope voltages between 236 successful trials and 249 unsuccessful trials did not show any consistent and statistically significant differences. In contrast with the previously reported correlation, the moving average of AVFV was not higher in the successful trials. In the Z direction, the successful trials had lower voltage than did the unsuccessful trials (P < 0.05). These results suggest that the absolute voltage of ECG during ventricular fibrillation is not robustly correlated with the outcome of defibrillation shocks.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Thérapeutique
/
Fibrillation ventriculaire
/
Traitement du signal assisté par ordinateur
/
Défibrillation
/
Électrocardiographie
/
Méthodes
/
Modèles théoriques
Limites du sujet:
Animaux
langue:
Chinois
Texte intégral:
Journal of Biomedical Engineering
Année:
2006
Type:
Article
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