Electrocardiogram

An echocardiogram is known as an ECG or EKG and measures the electrical activity in the heart. An electrical signal begins at the top of the heard and travels down to the bottom. The signal triggers the heartbeat. Most heart problems can cause a malfunction with the electrical activity. An ECG is usually the first test done in the presence of symptoms pointing to heart disease.

Patients over 50 years of age or with a family history of heart disease have ECGs done to look for early signs of heart problems.

Obtaining an ECG is simple and painless. Small, quarter-sized electrodes are attached to different areas on the chest, arms, and legs. There are 12 to 15 electrodes and have a gel on them. Electrical leads (wires) are attached to the electrodes and the ECG machine. The machine measures the electrical activity in the heart and prints out the results on graph paper. The test takes approximately 10 minutes. The electrodes are removed and discarded afterward.

Since some heart problems can come and go, an ECG may not be able to chart the activity during a 10-minute timeframe. An ambulatory ECG monitor (Holter monitor) may be needed to be attached for 24 to 48 hours to get an extended test of the heart activity. The patient keeps a diary of activity during the Holter monitor to help identify the cause of symptoms.

Some heart problems may only occur during exercise and will necessitate a stress test while having an ECG done.

The experts at Stanislaus Cardiology can determine which type of heart assessment you may need.