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What is a Pacemaker Interrogation?

Mary McMahon
Updated Mar 03, 2024
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Pacemaker interrogation is a process for checking on the function of a pacemaker to make sure it is working properly and the batteries are in good condition. In this procedure, a doctor waves a wand connected to a computer over the patient's chest. The wand and pacemaker communicate wirelessly, allowing the computer to extract data from the pacemaker's memory. The computer will also check on the pacemaker's battery life. This is not painful to the patient, although sometimes patients feel lightheaded or strange during a pacemaker interrogation.

Patients using pacemakers usually receive a pacemaker interrogation during follow-up appointments after the initial pacemaker implantation. The doctor will retrieve information about cardiac events from the memory of the device, confirm that the batteries are still in good condition, and make sure the leads are working properly. If necessary, the wand can be used to remotely change the programming of the pacemaker.

Doctors usually recommend a pacemaker interrogation before any surgical procedure, even if the pacemaker has been recently checked. Electrocautery and other tools used during surgery could potentially interfere with the device, especially if the batteries are low. Checking on its function before surgery will allow care providers to make any necessary adjustments to the patient's care plan to keep the patient safe during the procedure.

This procedure takes around 10 to 15 minutes and is scheduled as an outpatient appointment. Patients can go to the hospital or a cardiac clinic, and the pacemaker interrogation doesn't require any special preparations on the part of the patient. Before the procedure, the doctor may conduct a brief interview, asking the patient about her general level of health and collecting information about any recent cardiac events. When the pacemaker interrogation is over, the doctor can advise the patient about any programming changes made and the available battery life.

Pacemaker checks are scheduled at regular intervals over the course of a patient's life. The goal is to identify any problems as early as possible so medical intervention can be provided before the device begins to malfunction. Patients who have missed appointments should reschedule as soon as possible and patients who have difficulty affording follow-up care may be able to receive financial assistance through a charitable program for patients with heart problems. A hospital or clinic usually has information about these programs and can provide patients with contact information, applications, and other resources they may find helpful.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Mary McMahon
By Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a The Health Board researcher and writer. Mary has a liberal arts degree from Goddard College and spends her free time reading, cooking, and exploring the great outdoors.

Discussion Comments
By anon997720 — On Feb 18, 2017

A few things: pacemakers and defibrillators are always implanted or removed by a doctor, usually an electrophysiologist who is a specialist cardiologist.

The units are sealed, to replace the battery, you replace the whole device. The device is mostly battery, anyway.

By anon996283 — On Aug 05, 2016

It's not just doctors who implant them- actually usually it's other staff such as cardiac techs and nurses. Doctors order the implantation. And yes, to replace a pacemaker's batteries, they do cut the chest back open and change the generator; however, they do not need to change the wires to the heart.

By anon994265 — On Jan 27, 2016

They replace the whole pacemaker, I think. So they cut you open again.

By Melonlity — On Jan 31, 2014

This may be a stupid question (well, it's almost certainly a stupid question), but how is the battery in a pacemaker changed? Does it require a form of outpatient surgery and how invasive is it?

Mary McMahon
Mary McMahon

Ever since she began contributing to the site several years ago, Mary has embraced the exciting challenge of being a...

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