Diagnosis

An electrocardiogram (ECG) can detect the extra beats and identify the pattern and source.

Electrocardiogram

Depending on the frequency and timing of your PVCs, different types of ECG testing options are available.

• Standard ECG. Sensors (electrodes) are attached to your chest and limbs to create a graphical record of the electrical signals traveling through your heart. This brief test usually is done in a clinic or hospital setting.

If you have infrequent PVCs, they may not be detected during the brief time a standard ECG is being done. In such cases, you may need to use a portable monitoring device for 24 hours or more to capture any abnormal rhythms. Common types of portable ECGs include:

• Holter monitor. You carry this device in your pocket or in a pouch on a belt or shoulder strap. It automatically records your heart's activity for 24 or 48 hours, which provides your doctor with an extended look at your heart rhythms.
• Event recorder. This device can be carried in your pocket or worn on a belt or shoulder strap for home monitoring of your heart's activity. When you feel symptoms, you push a button, and a brief ECG strip recording is made. The recorder, which can be used for several weeks, allows your doctor to see your heart rhythm at the time of your symptoms.
• Exercise stress ECG. This test uses electrocardiography to record your heart's electrical activity while you walk on a treadmill or pedal an exercise bike. It can help determine whether exercise triggers your PVCs.