Body weight is a predictor of biphasic shock success for low energy transthoracic defibrillation

Background: Transthoracic impedance and current flow are determinants of defibrillation success with monophasic shocks. Whether transthoracic impedance, either independently or via its association with body weight, is a determinant of biphasic waveform shock success has not been determined. Methods...

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Veröffentlicht in:	Resuscitation 2002-09, Vol.54 (3), p.281-287
Hauptverfasser:	Zhang, Yi, Clark, Craig B, Davies, L.Ray, Karlsson, Gudjon, Zimmerman, M.Bridget, Kerber, Richard E
Format:	Artikel
Sprache:	eng
Schlagworte:	Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy Animals Biological and medical sciences Body Weight Defibrillation Desfibrilación Desfibrilhação Electric Countershock - methods Emergency and intensive cardiocirculatory care. Cardiogenic shock. Coronary intensive care Impedancia transtorácica Impedância trans-torácica Intensive care medicine Medical sciences Peso corporal Swine Transthoracic impedance Ventricular
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Zusammenfassung:	Background: Transthoracic impedance and current flow are determinants of defibrillation success with monophasic shocks. Whether transthoracic impedance, either independently or via its association with body weight, is a determinant of biphasic waveform shock success has not been determined. Methods and results: We studied 22 swine, weighing 18–41 kg. After 15 s of ventricular fibrillation, each pig received transthoracic truncated exponential biphasic shocks (5/5 ms), 70–360 J. Shock success was strongly associated individually with body weight, leading-edge transthoracic impedance and current at low energy levels (70 and 100 J, all P
ISSN:	0300-9572 1873-1570
DOI:	10.1016/S0300-9572(02)00121-1