ECG

An electrocardiogram (ECG or EKG) is a quick test to check the heartbeat. It records the electrical signals in the heart. Test results can help diagnose heart attacks and irregular heartbeats, called arrhythmias.

An electrocardiogram (ECG or EKG) is done to check the heartbeat. It shows how fast or how slow the heart is beating. ECG test results can help diagnose:

· Irregular heartbeats, called arrhythmias.

· A previous heart attack.

· The cause of chest pain. For example, it may show signs of blocked or narrowed heart arteries.

10 electrode placement for a 12 Lead ECG

Preparing for an ECG

· Wearing a top that’s easy to take on and off

· Not putting body lotions, oil or talcum powder on skin before the test

· Not eating a heavy meal or having caffeine before an exercise ECG (stress test)

Certain factors or conditions may interfere with or affect the results of the ECG.

· Obesity

· Anatomical considerations, such as the size of the chest and the location of the heart within the chest

· Movement during the test

· Exercise or smoking before the test

· Certain medicines

· Electrolyte imbalances, such as too much or too little potassium, magnesium, or calcium in the blood.