In cases where someone is undergoing an elective medical procedure with significant risk of arrhythmia, front-and-back placement in adults is standard. I would

In cases where someone is undergoing an elective medical procedure with significant risk of arrhythmia, front-and-back placement in adults is standard. I would be curious if AED's can analyze the patterns equally well regardless of position. I'm an anesthesiologist, so in those kind of procedures, they're generally covered in electrodes to watch for arrhythmia, and there's a cardiologist or cardiac surgeon in the room with me who can double-check before we shock. Plus, we can distinguish pulsatile from pulseless VT because we have other monitors (pulse oximetry, and in these procedures usually an intra-arterial catheter that can clearly distinguish whether or not a pulse is present).