Physio-Control LIFEPAK 20e - Manual (Page 170)

Clinical Summaries
B-4 LIFEPAK 20e Defibrillator/Monitor Operating Instructions
Cumulative percentages of successes for cardioversion of AF with shocks of 200 J or less, the
primary endpoint of the study, was significantly higher in the biphasic group than the monophasic
group (p<0.0001). The observed cumulative percentage of successes at 360 J was also higher
for biphasic shocks than for monophasic shocks, but did not attain statistical significance.
Table B-1 Cumulative Success Rates and Crossover Results for Cardioversion of AF
Energy Setting 70 J 100 J 200 J 360 J 360 J Crossover Successes
MDS: n = 37 5.4% 19% 38% 86%
4 of 5 pts succeeded with
360 J BTE shock
BTE: n = 35 60% 80% 97% 97%
0 of 1 pts succeeded with
360 J MDS shock
Table B-2 Energy Settings, Delivered Energy and Peak Current for Shocks Delivered to Patients in AF
Energy Setting Number of Patients Delivered Energy Peak Current, Amps
Monophasic shocks
70 J 37 73±3 21.0±3.5
100 J 35 105±4 24.6±4.3
200 J 30 209±7 34.6±5.9
360 J 23 376±13 46.8±8
360 J crossover
shocks 1 380 44.7
Biphasic shocks*
70 J 35 71±0 11.9±2.5
100 J 14 102±0 14.9 ±3.5
200 J 7 203±1 20.6±3.5
360 J 1 362 28.5
360 J crossover
shocks 5 361±6 32.4±8.5
* Peak current and delivered energy are not available for two of the patients treated with biphasic shocks.