Philips M3500B manual Biphasic Patients Monophasic Patients Value Number Percent

Clinical Performance Summary - Cardioversion

The 150J SMART Biphasic waveform successfully converted far more patients with an initial 100J shock (60% compared with 22% for the monophasic waveform), and successfully converted patients at least as well with a maximum energy of 200J as the monophasic did with its maximum energy of 360J (91% compared to 85% for the monophasic waveform). Over- all, the biphasic waveform required fewer shocks (1.7, compared to 2.8 for the monophasic waveform) and lower delivered energy (217J, compared to 548J for the monophasic waveform). Outcomes are summarized in , Table 13-4.

Table 13-4 Clinical Summary - Cardioversion
	Biphasic Patients		Monophasic Patients		P Value
	Number (Percent)		Number (Percent)
Cumulative
Cardioversion Efficacy
Single shock only	58/96	(60%)	24/107	(22%)	<0.0001	13
<2 shocks	74/96	(77%)	47/107	(44%)	<0.0001
<3 shocks	86/96	(90%)	57/107	(53%)	<0.0001
<4 shocks	87/96	(91%)	91/107	(85%)	.29
Skin “burn”					0.0001
None	25/90	(28%)	15/105	(14%)
Mild	50/90	(56%)	47/105	(45%)
Moderate	15/90	(17%)	41/105	(39%)
Severe	0/90	(0%)	2/105	(2%)
Number of shocks	1.7 + 1.0		2.8 + 1.2		<0.0001
Cumulative delivered	217 + 176J		548 + 331J		<0.0001
energy
Skin reaction definitions: (Evaluated 24 - 48 hours after procedure)
Mild - erythema, no tenderness
Moderate - erythema, tenderness
Severe - blistering or necrosis, tenderness

M3500B HeartStart XLT Defibrillator/Monitor 13-17