A pacemaker consists of a small, battery-powered generator and one or more leads. In a single-chamber system, one lead is used, most commonly pacing the right ventricle. Dual-chamber pacemakers have two leads, placed in the right atrium and right ventricle.
Patients with sinus node dysfunctions are routinely given pacemakers. Both single, dual, MRI Compatible pacemakers are implanted in AIG Hospitals.