Implantable Cardiac Devices

Pacemaker

An "artificial pacemaker" is a small, battery-operated device that helps the heart beat in a regular rhythm. Some are permanent (internal) and some are temporary (external). They can replace a defective natural pacemaker or blocked pathway.

Bi-Ventricular Pacemaker

Leads are implanted through a vein into the right ventricle and into the coronary sinus vein to pace or regulate the left ventricle. A lead is also implanted into the right atrium. This helps the heart beat in a more balanced way.

Traditional pacemakers are used to treat slow heart rhythms. Pacemakers regulate the right atrium and right ventricle to maintain a good heart rate and keep the atrium and ventricle working together. This is called AV synchrony. Biventricular pacemakers add a third lead to help the left ventricle contract at the same time as the right ventricle.

Implantable Cardioverter-Defibrillator (ICD)

Most commmonly used to treat sudden onset of lethal arrythmias. Leads are implanted through a vein into the right ventricle and right atrium. ICDs have a dual function, in that they can pace the heart while simultaneously monitoring heart rate.

Bi-Ventricular Implantable Cardioverter-Defibrillator

Most commonly used in patients with congestive heart failure with low ejection fractions.
Leads are implanted through a vein into the right ventricle, right atrium, and into the coronary sinus vein to pace or regulate the left ventricle. A lead is also implanted into the right atrium. This helps the heart beat in a more balanced way.