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What Are the Risks of Using a Holter or Event Monitor?

The sticky patches used to attach the sensors (electrodes) to your chest have a small risk of skin irritation. You also may have an allergic reaction to the paste or gel that's sometimes used to attach the patches. The irritation will go away once the patches are removed.

If you're using an implantable loop recorder, you may get an infection or have pain where the device is placed under the skin. Your doctor can prescribe medicine to treat these problems.

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Last Updated: March 16, 2012