24 hour Holter Monitor

Holter monitors are sometimes called continuous EKGs (electrocardiograms). This is because Holter monitors record your heart rhythm continuously for 24 to 48 hours.

A Holter monitor is about the size of a large deck of cards. You can clip it to a belt or carry it in a pocket. Wires connect the device to sensors (called electrodes) that are stuck to your chest using sticky patches. These sensors detect your heart's electrical signals, and the monitor records your heart's rhythm.

Wireless Holter Monitors

Wireless Holter monitors have a longer recording time than standard Holter monitors. Wireless monitors record your heart's electrical activity for a preset amount of time.

These monitors use wireless cellular technology to send the recorded data to your doctor's office or a company that checks the data. This happens automatically at certain times. Wireless monitors still have wires that connect the device to the sensors stuck to your chest.

You can use a wireless Holter monitor for days or even weeks until signs or symptoms of a heart rhythm problem occur. These monitors usually are used to detect heart rhythm problems that don't occur often.

Although wireless Holter monitors work for longer periods, they have a down side. You must remember to write down the time of symptoms so your doctor can match it to the heart rhythm recording. Also, the batteries in the wireless monitor must be changed every 1 to 2 days.

Information provided by National Heart, Lung and Blood Institute

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