<prompt> Pulseless electric activity due to ?Ionic abnormalityAlkalosisHyponatremiaAll of the above  <response>: Answer- A. Ionic abnormality Pulseless electrical activity or PEA also known as by the older term electromechanical association refers to a clinical diagnosis of cardiac arrest in which hea rhythm is observed on the electrocardiogram that should be producing a pulse but is not. 