Removal of Cardiopulmonary Resuscitation Artifacts with an Enhanced Adaptive Filtering Method: An Experimental Trial

Table 2

Sensitivity and specificity for the artifact-free ECG and CC corrupted signals before and after filtering.

	Rhythm	Number	Artifact-free	Unfiltered	Adaptive	High-pass
Shockable (sensitivity)	VF	283	99.0%	99.3%	93.3%**	93.0%**
Nonshockable (specificity)	All	280	98.2%**	46.8%	96.0%^**##	80.4%**
	PEA	208	98.6%**	53.9%	97.6%^**##	86.3%**
	ASY	72	97.2%**	26.4%	91.7%^**##	63.9%**

∗∗Compared with unfiltered signals, 𝑃<0.001 and ##compared with high-pass filter, 𝑃<0.001. VF: ventricular fibrillation, PEA: pulseless electrical activity, and ASY: asystole.