Non-Invasive Lab / Heart Station

The CMC Non-Invasive Laboratory provides diagnostic procedures to detect cardiovascular abnormalities and diseases on either an in-patient or out-patient basis. These painless tests require no needles, dyes or x-rays, and are without risks or side effects. The staff includes certified cardiovascular technologies, peripheral vascular ultrasound technologist, well trained electrocardiographies technicians and board certified adult and pediatric cardiologists.

The staff is available 24 hours a day for emergency care. Advanced diagnostic equipment enables the staff to assist the physician, cardiologists, and other specialists in obtaining high quality test result.

Treadmill Test

Non-Invasive Tests

The Non-Invasive Tests performed in Cardiographics are:

Echocardiogram (Resting ECG / EKG)

Shows the electrical activity of the heart, and it is used to identify heart rate and any disturbances in the heart’s rhythm. Temporary ischema (which occurs when the heart muscle is not getting enough oxygen) and current or previous heart attacks will also show on an EKG.

Cardiac Stress Testing (Treadmill Exercise Test / Exercise EKG)

The procedure helps a doctor find out how well your heart handles work. As your body works harder during the test, it requires more oxygen, so the heart must pump more blood. The test can show if the blood supply is reduced in the arteries that supply the heart. It also help doctors to know the kind and level of exercise appropriate for a patient.

24-Hour Holter Monitoring

The Holter Monitoring is used in diagnosing heart rhythm disturbances that may occur at times when you are away from the doctor. It is used in conjunction with a written diary or log of your daily events and activities. The Holter monitor allows doctors to relate to those symptoms to actual variations in heart rhythms, providing them with further diagnostic information determining the most course of treatment.

Ambulatory Blood Pressure Monitoring

Ambulatory pressure monitoring is an accepted clinical tool for collecting multiple blood pressure measurements. It better assists clinicians with the diagnosis and management of hypertension by providing: blood pressure variability, an estimation of true blood pressure, overnight changes in blood pressure, and a morning surge in blood pressure. In clinic and home blood pressure measurements cannot provide the same depth of information that a 24-hour study provides.

Ankle-Brachial Index (ABI)

An ABI is a simple, reliable test for diagnosing pad in the legs. The test measures the blood pressure in your ankles and compares it to that in your arms. If blood pressure is lower in your legs than in your arms, it may indicate PAD is restricting blood flow in your legs. The ABI test is fast and painless and does not require entering the body.

Dobutamine Stress Echocardiogram

A diagnostic procedure that may be used when a doctor wants to assess the heart muscle under stress. If exercise on a treadmill is not an option (too much stress on the heart) due to a person’s mental condition, a doctor may use an intravenous medication called dobutamine.

Stress Echocardiogram (Exercise Echocardiogram)

A Stress Echocardiogram is a test that combines an ultrasound study of the heart with an exercise test. The test allows the doctor to learn how the heart functions when it has to work harder.

Non-Invasive Tests in Cardiac & Peripheral Vascular Laboratory

The Non-Invasive Tests performed in our Cardiac and Peripheral Vascular Laboratory are as follows:


An echocardiogram (often called “echo”) is a graphic outline of the heart’s movement. During an echocardiogram test, ultrasound (high frequency sound waves) that come from a hand held wand placed on your chest is used to provide pictures of the heart’s valves and chambers and help the sonographer evaluate the pumping action of the heart. Echo is often combined with Doppler ultrasound and color Doppler to evaluate blood flow across the heart’s arterial flow in the upper and lower extremities with the use of a Doppler spectrum analysis and real-time ultrasound imaging. Peripheral artery scanning can also assist in the diagnosis of iliac, femoral, and popliteal aneurysms.

Venous Duplex / Doppler Studies and Deep Vein Thrombosis Screening

This test is a duplex imaging of the lower extremity venous system. A Peripheral Venous Scanning evaluation will detect deep or superficial thrombosis of the one or both extremities and is very useful in ruling out any venous thrombosis in cases of limb swelling and pulmoonary emboli. The evaluation of saphenous vein to verify its appropriateness for coronary bypass can also be determined. The lower extremity venous insufficiencies can likewise be assessed.

Carotid Duplex / Doppler Studies

Carotid and vertebral imaging is a duplex imaging of the extracranial carotid, the vertebral and sunclavian arteries. A 2D image in grey scale of the vessel walls that should show any plaque formation and indicate any irregularities, stenoses, or occlusions. Doppler is added to the image and is essential to locate blood flow and to determine what percentage of stenosis is present.