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.
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