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Titolo:
Reducing CPR artefacts in ventricular fibrillation in vitro
Autore:
Langhelle, A; Eftestol, T; Myklebust, H; Eriksen, M; Holten, BT; Steen, PA;
Indirizzi:
Ulleval Univ Hosp, Expt Med Res Inst, N-0407 Oslo, Norway Ulleval Univ Hosp Oslo Norway N-0407 t Med Res Inst, N-0407 Oslo, Norway Norwegian Air Ambulance, N-1441 Drobak, Norway Norwegian Air Ambulance Drobak Norway N-1441 ance, N-1441 Drobak, Norway Stavanger Univ Coll, Dept Elect & Comp Engn, N-4091 Stavanger, Norway Stavanger Univ Coll Stavanger Norway N-4091 gn, N-4091 Stavanger, Norway Laerdal Med AS, N-4002 Stavanger, Norway Laerdal Med AS Stavanger NorwayN-4002 Med AS, N-4002 Stavanger, Norway Ulleval Univ Hosp, Div Surg, N-0407 Oslo, Norway Ulleval Univ Hosp Oslo Norway N-0407 Hosp, Div Surg, N-0407 Oslo, Norway
Titolo Testata:
RESUSCITATION
fascicolo: 3, volume: 48, anno: 2001,
pagine: 279 - 291
SICI:
0300-9572(200103)48:3<279:RCAIVF>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
CARDIOPULMONARY-RESUSCITATION; SUCCESS; FREQUENCY;
Keywords:
artefacts; adaptive filtering; cardiopulmonary resuscitation; electrocardiography; ventricular fibrillation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
13
Recensione:
Indirizzi per estratti:
Indirizzo: Langhelle, A Ulleval Univ Hosp, Expt Med Res Inst, N-0407 Oslo, Norway Ulleval Univ Hosp Oslo Norway N-0407 t, N-0407 Oslo, Norway
Citazione:
A. Langhelle et al., "Reducing CPR artefacts in ventricular fibrillation in vitro", RESUSCITAT, 48(3), 2001, pp. 279-291

Abstract

CPR creates artefacts on the ECG, and a pause in CPR is therefore mandatory during rhythm analysis. This hands-off interval is harmful to the alreadymarginally circulated tissues during CPR, and if the artefacts could be removed by filtering, the rhythm could be analyzed during ongoing CPR. Fixed coefficient filters used in animals cannot solve this problem in humans, due to overlapping frequency spectra for artefacts and VF signals. In the present study, we established a method for mixing CPR-artefacts (noise) from a pig with human VF (signal) at various signal-to-noise ratios (SNR) from -10 dB to +10 dB. We then developed a new methodology for removingCPR artefacts by applying a digital adaptive filter, and compared the results with this filter to that of a fixed coefficient filter. The results with the adaptive filter clearly outperformed the fixed coefficient filter forall SNR levels. At an original SNR of 0 dB, the restored SNRs were 9.0 +/-0.7 dB versus 0.9 +/- 0.7 dB respectively (P < 0.0001). (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 01:38:46