Table 3.

Study results.

Study	Sample size (low voltage)	Stated low voltage range	No. pts with ‘normal’ ECG	No. pts discharged on initial assessment	No. pts with initial arrhythmia	Initial cardiac monitoring period (hrs)	No. pts with resolution of arrhythmia	No. pts admitted post initial monitoring period	No. pts with delayed arrhythmia	No. pts requiring treatment or intervention	Mortality (%)
Dhital et al. (2020)	32	< 1000 V	88% (n = 28)	88% (n = 28)	12% (n = 4)	48.0	100% (n = 4)	0	0	0	0
Searle et al. (2013)	153	< 500 V	82% (n = 126)	*	18% (n = 27)	20.3	*	*	0	0	0
Blackwell & Hayllar (2002)	196	< 1000 V	59% (n = 116)	3% (n = 6)	38% (n = 74)	6.0	*	4% (n = 8)	0	3% (n = 6)	0
Warentis et al. (2020)	167	25–980 V	10% (n = 17)	0	14% (n = 24)	24.0	12% (n = 20)	2% (n = 4)	0	0	0
Ahmed et al. (2021)	408	< 1000 V	79% (n = 323)	*	21% (n = 85)	*	*	1% (n = 6)	0	0	0
Akkas et al. (2012)	65	< 1000 V	83% (n = 54)	*	9% (n = 6)	48.0	*	*	0	*	5% (n = 3)
Arrowsmith et al. (1997)	128	< 1000 V	99% (n = 127)	0	1% (n = 1)	24.0	1% (n = 1)	1% (n = 1)	0	0	0

*Missing or incomplete data.

ECG: electrocardiogram.