Electrophysiologists are those Cardiologists who gain expertise in treatment of arrhythmias like atrial fibrillation, Supraventricular tachycardia, Premature beats with medicines and catheter based procedures like ablation. They also implant devices like pacemakers and defibrillators to treat slow heart rate, cardiac arrest.

A nurse practitioner is a registered nurse who has gone through additional training to provide more advanced medical and diagnostic care to patients with all different kinds of illnesses. These medical professionals generally hold at least a master’s degree, so they have a comprehensive basis of medical knowledge to help patients suffering from chronic and acute conditions. They may work in hospitals, intensive care units, hospice centers, and even doctor’s offices, depending on their specialty.