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Cardiac Investigations Unit

At Nepean Cardiology, within our Cardiac Investigations Unit our Cardiac Technologists are a team of highly qualified and experienced individuals that have expertise in a variety of aspects of non-invasive imaging.

The Cardiac Investigations Unit provides non-invasive diagnostic testing and also provides support for invasive procedures in the cardiac catheter laboratory.

The staff performing cardiac sonography are Accredited Medical Sonographers and the staff assisting in electrophysiology studies and radiofrequency ablation have undertaken post-graduate level cardiac electrophysiology training.


Nepean Cardiac Technicians

Cardiac Investigations includes:

  • Transthoracic Electrocardiogram (ECG)
  • Transoesophageal Echocardiogram (TOE)
  • 24hr Holter Monitor
  • Exercise Stress Tests
  • Echocardiography (ECHO), including Stress ECHO
  • Pacemaker check.

Detailed explanations

Cardiac Investigations (non-invasive procedures) which are usually facilitated by our Cardiac Technologists.

24 Hour Holter Monitor is a small wearable device that records your heart rhythm (ECG). You usually wear a Holter Monitor for approximately 24 hours. Since it can be worn during your regular daily activities it helps the doctor correlate symptoms of dizziness, palpitations (a sensation of fast or irregular heart rhythm) or black outs.

Electrocardiograph (ECG) is a quick and simple test to measure the electrical impulses that make your heart beat. The test can detect problems with the rhythm or conduction of the heart beat which may help to diagnose underlying disease.

Exercise Stress Test is used to measure the performance of the heart muscle and blood supply. It consists of walking (and possibly building up to running) on a treadmill whilst attached to a heart monitor. Heart rate, rhythm and blood pressures are recorded before, during and after exercising on the treadmill. Any symptoms that arise such as shortness of breath, dizziness, chest pain or any other symptoms should be reported to the doctor or technologist present during the test.

Transthoracic Echocardiogram (ECHO) is an ultrasound of your heart to assess the structure and function of the heart as well as assessing, in more detail, valvular function.

Transoesophageal Echocardiogram (TOE) is an ultrasound of the heart that is performed using a tube-like probe that is placed into the mouth and passed down the oesophagus (the food pipe that connects the throat to the stomach). This test usually provides excellent images of the heart and gives additional information to a standard transthoracic echocardiogram. This examination gives exceptional images for assessing the structural abnormalities of the valves, the presence of absence of infection on the valves, to exclude small clots inside the heart as well as other aspects of cardiac function.

Stress Echocardiogram is a specialised test that provides specific information about the heart in a non-invasive way for individuals with suspected coronary artery disease. It increases the accuracy of a stress test in diagnosing this, and can also give specific information about valvular disease and cardiac pressures.

Pacemaker check is for checking and monitoring the battery life of pacemakers and ICDs, and assessing and monitoring the functions of the devices as programed.





Wednesday, 15 November 2017 3:17:25 PM