The appearance of the electrocardiogram in the setting of PEA varies, but several common patterns exist. There may be a normal sinus rhythm or sinus tachycardia, with discernible P waves and QRS complexes. Sometimes there is a bradycardia, with or without P waves, and often there is a wide QRS complex. The presence of a QRS interval > 0.20 seconds is associated with a poorer prognosis.  The EKG should be carefully evaluated for signs of Hyperkalemia, ST segment elevation MI, hypothermia, QRS interval prolongation suggests tricyclic antidepressant overdose
Pulseless electrical activity electrocardiogram
Torsades de pointes electrocardiogram
Cyanosis electrocardiogram
Cardiomyopathy electrocardiogram
Altitude sickness electrocardiogram
Adams-Stokes syndrome electrocardiogram
Status asthmaticus electrocardiogram
Syncope electrocardiogram