Possible Complications
This test does not cause problems.
Reasons for Test
This test is done to find out whether the heart is beating too slow or too quickly. It also looks for heart rhythm problems.
The test records your heart’s electrical activity for long periods of time. This makes it more likely to find a problem that comes and goes. It may be used to learn more about:
- Fainting spells that may be caused by the heart
- A feeling that the heart is racing
- If treatment for heart rhythm problems is working
What to Expect
Prior to Test
An ECG will be done. It will
check the electrical activity of the heart.
Description of Test
The test steps depend on how it will be done:
- Holter monitoring—A small device will be strapped on. Wires from it will be
attached to small sticky pads (electrodes) on the chest. Some devices have an
event button. The button is pushed if there are symptoms. A diary of activity will
be kept for the next 24 to 48 hours.
- Looping monitor—The electrode may be a wrist band, finger attachment, or
chest plate. It records many minutes at a time, then starts over. The button is to
be pushed during or after an event to save the data. There is an implantable
version that records longer periods of time. It is surgically placed under the
skin.
- Event recorder—This device is only used when a person has symptoms. It may
be a wrist band with a button or a small device that is pressed onto the chest.
Some of these are connected to a 24-hour base. The base can find a problem right
away and respond to an event when the signal is activated.
- Mobile cardiac outpatient telemetry—A special service monitors the
heartbeat at all times. It will respond right away when it finds a serious
problem.
During the test, a person must stay away from things like
magnets, metal detectors, high-voltage wires, microwave ovens, and electric devices.
They may cause problems with the test.
After Test
The device is returned after the test.
How Long Will It Take?
The test is often done for 24 hours. Some people may need to be monitored longer.
Will It Hurt?
This test will not hurt.
Results
The doctor will look at the data and decide if more tests or
treatment is needed.
Problems to Look Out For
Call the doctor if you have:
- Problems breathing
- Chest pain
- Any new symptoms
If you think you have an emergency, call for medical help right away.