Implantable Cardiac Electronic Devices

Dr Vernon Freeman specialises in heart rhythm disorders. Dr Freeman examines the heart's timing, or electrical system and diagnoses and treats irregular heartbeats, known as arrhythmias, sustained ventricular tachycardia or atrial fibrillation. One way of monitoring and treating these arrhythmias is through the surgical implantation of cardiac electronic devices. These implantable devices are able to perform cardioversion, defibrillation, and pacing of the heart. The devices are therefore capable of correcting most life-threatening cardiac arrhythmias.

Dr Freeman also provides ongoing cardiac device management, including programming, and follow-up visits for applicable devices. Doctor Freeman will discuss the benefits and risks before proceeding with tests or procedures.

The implantation of cardiac electronic devices includes:

Pacemakers - commonly used in the elderly, pacemakers are devices that are inserted just under the skin in the chest. Pacemakers set the correct pace for the heartbeat. They can be temporary. There are different types of pacemakers including a single chamber pacemaker, a dual chamber pacemaker and a biventricular pacemaker.

An implantable cardiac defibrillator (ICD) is a battery powered device that is placed under the skin. Thin wires connect the ICD directly to the heart. If an abnormal heart rhythm is detected the device can deliver an electric shock to restore a normal heartbeat. ICDs are very useful in preventing sudden death in patients with serious heart conditions.

Cardiac resynchronisation therapy , or biventricular pacing, involves the insertion of electrodes into the left and right ventricles of the heart. The electrodes deliver electrical pulses to both the lower chambers of the heart to improve the heart's ability to pump blood and oxygen to the body. It is usually indicated in patients with heart failure.

Implanted cardiac monitors/loop recorders are heart monitors, similar to an ECG that monitors and records the rhythm of the heart over an extended period of time. They pick up on heart episodes that a holter test or a regular ECG might miss. It allows for a more accurate diagnosis and subsequent treatment. Implantation is accomplished through minor surgery and the doctor is able to see the results remotely via the internet.