Philips HEARTSTART XLT M3500B - Manual (Page 161)

Clinical Performance Summary - Defibrillation
M3500B HeartStart XLT Defibrillator/Monitor 13-15
13
Conclusion
The 150J SMART Biphasic waveform defibrillated at higher rates than 200-
360J monophasic waveforms, resulting in more patients achieving return of
spontaneous circulation (ROSC) (p=0.01). EMS system outcomes of survival
discharge were not significantly different statistically. However, patients
resuscitated with the lower energy SMART Biphasic waveform were more
likely to have good cerebral performance (CPC, cerebral performance cate-
gory) (p=0.04).
Table 13-3 Clinical Summary - Defibrillation
Biphasic Patients
Number/(Percent)
Monophasic Patients
Number/(Percent)
P Value
(chi-square)
Defibrillation Efficacy
Single shock only
<2 shocks
<3 shocks 52/54 (96%)
52/54 (96%)
53/54 (98%) 36/61 (59%)
39/61 (64%)
42/61 (69%) <0.0001
<0.0001
<0.0001
Patients Defibrillated 54/54 (100%) 49/58 (84%) 0.003
Return of Spontaneous
Circulation 41/54 (76%) 33/61 (54%) 0.01
Survival to Hospital
Admission 33/54 (61%) 31/61 (51%) 0.27
Survival to Hospital Dis-
charge 15/54 (28%) 19/61 (31%) 0.69
CPC = 1 (Good) 13/15 (87%) 10/19 (53%) 0.04