Back to Cardiovascular Procedures
A Holter monitor (also called an ambulatory electrocardiography
device), named after its inventor, Dr. Norman Holter, is a portable
device for continuously monitoring the electrical activity of the
heart for 24 hours or more. Its extended recording period is useful
for observing occasional cardiac arrhythmias that would be otherwise
difficult to identify in a shorter period of time.
Much like standard electrocardiography (EKG), the Holter monitor
records electrical signals from the heart via a series of electrodes
attached to the chest. The number and position of electrodes varies by
model, but most Holter monitors employ from three to six. These
electrodes are connected to a small piece of equipment that is
attached to the patient's belt, and is responsible for keeping a log
of the heart's electrical activity throughout the recording period.
Are you a doctor or a nurse?
Do you want to join the Doctors Lounge online medical community?
Participate in editorial activities (publish, peer review, edit) and
give a helping hand to the largest online community of patients.
Click on the link below to see the requirements:
Doctors Lounge Membership
In addition to receiving the device itself, most patients are also
asked to keep a diary of activities, symptoms, and times that an
arrhythmia occurs. This information is used by doctors and technicians
to rapidly pinpoint problem areas in the vast amount of data recorded
during the monitoring period.