An implantable cardioverter defibrillator (ICD) is an electronic device similar to a pacemaker that is implanted under the skin of a patient.

Privremeni elektrostimulator

The temporary pacemaker (TPM) involves heart stimulation due to often slow heart rate (bradycardia) or less frequently rapid heart rate (tachycardia), for a short time until the cause of heart rhythm disturbance is eliminated or until a permanent pacemaker is implanted.

Electrical cardioversion, often called (electro)cardioversion, is a procedure that treats abnormal and usually fast heart rhythm (cardiac arrhythmia).