The A‐WCD employs three levels of protection to achieve a low false alarm rate due to noise. Level 1 (blue)—minimize noise. Level 2 (red)—detect and remove noise that does occur. Level 3 (yellow)—allow time for remaining noise to subside before alarming.
From: Poole JE, Gleva MJ, Birgersdotter-Green U, et al. A wearable cardioverter defibrillator with a low false alarm rate. J Cardiovasc Electrophysiol 2022; 33:831.
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