Pulseless Electrical Activity
Cardiac arrest where the patient has cardiac electrical activity, which would otherwise produce cardiac output and an obvious pulse. PEA usually has an underlying treatable cause which, in emergency situations, is most often hypovolemia. Performing a pulse check after a rhythm/monitor check will ensure that PEA is identified.
Treatment (NOT shockable)...

After 2 minutes, recheck the patient's condition:
  1. If a pulse is present, start post-resuscitation care.
  2. If rhythm is VF/VT, change to the shockable rhythm algorithm.
  3. If still in PEA, and no change in ECG appearance:
    • Continue CPR.
    • Give further adrenaline 1 mg every 3-5 min.
Reversible causes...