Attach the electrodes to your skin. Put the adhesive electrodes on your body as directed—this usually means two electrodes on either side of your heart, one in front of your heart, and two pads on the bottom edge of either side of your rib cage. Secure the leads (wires) to the electrodes according to the instructions.

The electrodes should be placed over bone at each of the sites. Press the center of each electrode against the patient’s skin, then rub the outer circle of each electrode to secure it. If you use lead lock or clip lock electrodes, be sure to use the lock or clip to relieve stress on each lead wire.

Electrodes will be attached to your chest and belly (abdomen). The Holter monitor will be connected to the electrodes with wires. The small monitor box may be worn over your shoulder like a shoulder bag, around your waist, or it may be clipped to a belt or pocket. If you were given a newer device, it will be attached to your chest like a patch.

A nurse will clean the areas with alcohol and then place the electrodes on your chest. For men, the nurse may have to shave some small areas of your chest. The electrodes stick to the skin with a gel. Sometimes, an electrode and lead wire will be taped to your chest to prevent them from moving around.