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Titolo:
LOW-ENERGY IMPEDANCE-COMPENSATING BIPHASIC WAVE-FORMS TERMINATE VENTRICULAR-FIBRILLATION AT HIGH-RATES IN VICTIMS OF OUT-OF-HOSPITAL CARDIAC-ARREST
Autore:
POOLE JE; WHITE RD; KANZ KG; HENGSTENBERG F; JARRARD T; ROBINSON JC; SANTANA V; MCKENAS DK; RICH N; ROSAS S; MERRITT S; MAGNOTTO L; GALLAGHER JV; GLINER BE; JORGENSON DB; MORGAN CB; DILLON SM; KRONMAL RA; BARDY GH;
Indirizzi:
UNIV WASHINGTON,DIV CARDIOL,BOX 356422,1959 NE PACIFIC ST SEATTLE WA 98195
Titolo Testata:
Journal of cardiovascular electrophysiology
fascicolo: 12, volume: 8, anno: 1997,
pagine: 1373 - 1385
SICI:
1045-3873(1997)8:12<1373:LIBWTV>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUTOMATIC EXTERNAL DEFIBRILLATORS; TRANSTHORACIC DEFIBRILLATION; BYSTANDER CPR; WAVE-FORMS; SHOCKS; SURVIVAL; EFFICACY; SUCCESS; CARDIOVERSION; DURATION;
Keywords:
SUDDEN CARDIAC ARREST; DEFIBRILLATION; AUTOMATIC EXTERNAL DEFIBRILLATORS;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
64
Recensione:
Indirizzi per estratti:
Citazione:
J.E. Poole et al., "LOW-ENERGY IMPEDANCE-COMPENSATING BIPHASIC WAVE-FORMS TERMINATE VENTRICULAR-FIBRILLATION AT HIGH-RATES IN VICTIMS OF OUT-OF-HOSPITAL CARDIAC-ARREST", Journal of cardiovascular electrophysiology, 8(12), 1997, pp. 1373-1385

Abstract

Introduction: New automatic external defibrillators (AEDs), which aresmaller, lighter, easier to use, and less costly make the goal of widespread AED deployment and early defibrillation for out-of-hospital cardiac arrest feasible. The objective of this study was to observe the performance of a low-energy impedance-compensating biphasic waveform in the out-of-hospital setting on 100 consecutive victims of sudden cardiac arrest. Methods and Results: AEDs incorporating a 150-J impedance-compensating biphasic waveform were used by 12 EMS systems. Data wereobtained from the AED PC card reporting system. Defibrillation was defined as conversion to an organized rhythm or to asystole. Endpoints included: defibrillation efficacy for ventricular fibrillation (VF); restoration of an organized rhythm at the time of patient transfer to anadvanced life support (ALS) team or to the emergency department (ED);and time from AED power-on to first defibrillation. The AED correctlyidentified 44 of 100 patients presenting in VF as requiring a shock (100% sensitivity) and 56 of 100 patients not in VF as not requiring a shock (100% specificity). The time from 911 call to first shock delivery averaged 8.1 +/- 3.0 minutes. A single 150-J biphasic shock defibrillated the initial VF episode in 39 of 44 (89%) patients, The average time from power-on to first defibrillation was 25 +/- 17 seconds. At patient transfer to ALS or ED care, an organized rhythm was present in 34 of 44 (77%) patients presenting with VF. Asystole was present in 7 (16%) and VF in 3 (7%). Conclusions: Low-energy impedance-compensatingbiphasic waveforms terminate long-duration VF at high rates in out-of-hospital cardiac arrest. Use of this waveform allows AED device characteristics consistent with widespread AED deployment and early defibrillation.

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Documento generato il 29/11/20 alle ore 06:59:12