TY - JOUR
T1 - Determinants of Thoracic Electrical Impedance in External Electrical Cardioversion of Atrial Fibrillation
AU - Fumagalli, Stefano
AU - Boni, Nadia
AU - Padeletti, Margherita
AU - Gori, Francesca
AU - Boncinelli, Lorenzo
AU - Valoti, Paolo
AU - Baldasseroni, Samuele
AU - Di Bari, Mauro
AU - Masotti, Giulio
AU - Padeletti, Luigi
AU - Barold, Serge
AU - Marchionni, Niccolò
PY - 2006/7/1
Y1 - 2006/7/1
N2 - The success of external cardioversion (ECV) of atrial fibrillation depends on generating sufficient transmyocardial current for defibrillation with minimal myocardial injury. Thoracic electrical impedance plays an important role in the relation between the delivered energy and transmyocardial current. This study assessed the determinants of thoracic electrical impedance in ECV of atrial fibrillation. ECV of atrial fibrillation was performed in 80 consecutive patients (mean age 73 ± 9 years; men 69%; body mass index 26.0 ± 3.6 kg/m2) within 12 months, using biphasic shocks (Multipulse Biowave) delivered through adhesive pads in an anteroposterior position. Thoracic electrical impedance was measured using the first shock. The mean thoracic electrical impedance was 57.7 ± 12.3 Ω (energy 71 ± 43 J, current intensity 33 ± 12 A). Sinus rhythm was immediately restored in 75 patients (94%). Thoracic electrical impedance was greater (60.9 ± 11.8 vs 51.7 ± 11.0 Ω, p = 0.001) in patients requiring >1 shock (65%). At multivariate linear regression analysis (R = 0.761, p 2 increase, p
AB - The success of external cardioversion (ECV) of atrial fibrillation depends on generating sufficient transmyocardial current for defibrillation with minimal myocardial injury. Thoracic electrical impedance plays an important role in the relation between the delivered energy and transmyocardial current. This study assessed the determinants of thoracic electrical impedance in ECV of atrial fibrillation. ECV of atrial fibrillation was performed in 80 consecutive patients (mean age 73 ± 9 years; men 69%; body mass index 26.0 ± 3.6 kg/m2) within 12 months, using biphasic shocks (Multipulse Biowave) delivered through adhesive pads in an anteroposterior position. Thoracic electrical impedance was measured using the first shock. The mean thoracic electrical impedance was 57.7 ± 12.3 Ω (energy 71 ± 43 J, current intensity 33 ± 12 A). Sinus rhythm was immediately restored in 75 patients (94%). Thoracic electrical impedance was greater (60.9 ± 11.8 vs 51.7 ± 11.0 Ω, p = 0.001) in patients requiring >1 shock (65%). At multivariate linear regression analysis (R = 0.761, p 2 increase, p
UR - http://www.scopus.com/inward/record.url?scp=33746760586&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746760586&partnerID=8YFLogxK
U2 - 10.1016/j.amjcard.2006.01.065
DO - 10.1016/j.amjcard.2006.01.065
M3 - Article
C2 - 16784926
AN - SCOPUS:33746760586
VL - 98
SP - 82
EP - 87
JO - American Journal of Cardiology
JF - American Journal of Cardiology
SN - 0002-9149
IS - 1
ER -