"Probability of successful defibrillation" as a monitor during CPR in out-of-hospital cardiac arrested patients.

Abstract:

:The frequency spectrum of the ECG in ventricular fibrillation (VF) correlates with myocardial perfusion and might predict defibrillation success defined as return of spontaneous circulation (ROSC). The predictive power increases when more spectral variables are combined, but the complex information can be difficult to handle during the intensity of CPR. We therefore developed a method for expressing this multidimensional information in a single reproducible variable reflecting the probability of defibrillation success. This is based on the highest performing predictor for ROSC after 883 shocks given to 156 patients with VF. This was a combination of two decorrelated spectral features based on a principal component analysis of an original feature set with information on centroid frequency, peak power frequency, spectral flatness and energy. The function "Probability of defibrillation success" (P(ROSC)(v)) was developed by a 2-dimensional histogram technique. P(ROSC)(v) discriminated between shocks followed by ROSC and No-ROSC (P<0.0001). The present methodology indicates a possible way to develop a CPR monitor.

journal_name

Resuscitation

journal_title

Resuscitation

authors

Eftestøl T,Sunde K,Aase SO,Husøy JH,Steen PA

doi

10.1016/s0300-9572(00)00266-5

keywords:

subject

Has Abstract

pub_date

2001-03-01 00:00:00

pages

245-54

issue

3

eissn

0300-9572

issn

1873-1570

pii

S0300-9572(00)00266-5

journal_volume

48

pub_type

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