Philips M3500B manual Conclusion, Clinical Summary Defibrillation

Clinical Performance Summary - Defibrillation

Table 13-3 Clinical Summary - Defibrillation
	Biphasic Patients	Monophasic Patients	P Value
	Number/(Percent)	Number/(Percent)	(chi-square)
Defibrillation Efficacy
Single shock only	52/54 (96%)	36/61 (59%)	<0.0001
<2 shocks	52/54 (96%)	39/61 (64%)	<0.0001
<3 shocks	53/54 (98%)	42/61 (69%)	<0.0001
Patients Defibrillated	54/54 (100%)	49/58 (84%)	0.003
Return of Spontaneous	41/54 (76%)	33/61 (54%)	0.01
Circulation
Survival to Hospital	33/54 (61%)	31/61 (51%)	0.27
Admission
				13
Survival to Hospital Dis-	15/54 (28%)	19/61 (31%)	0.69
charge
CPC = 1 (Good)	13/15 (87%)	10/19 (53%)	0.04

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).

M3500B HeartStart XLT Defibrillator/Monitor 13-15