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A pacemaker is a small battery-powered device that sends weak electrical impulses to "set a pace" so
that the heart is able to keep a regular heartbeat.
different types of pacemakers, so your doctor will work with you to decide what
kind will be best for you.
Most new pacemakers are rate-responsive, or physiologic,
pacemakers. This type of pacemaker varies its rate to cause the heart to beat
faster when you are exercising to meet your body's increased needs or slower
when you are at rest. Another type, the fixed-rate pacemaker, sends electrical
impulses at a set rate that does not vary either faster or slower. Both types
of pacemakers send electrical impulses when the heart rate drops to a predetermined "slow"
Some pacemakers are a combination of a pacemaker with an
implantable cardioverter-defibrillator (ICD). This
combination pacemaker and ICD is used for people who need a pacemaker and also
have a risk for abnormal heart rhythms.
Permanent pacemakers are surgically implanted into the chest.
The procedure to implant a pacemaker is
considered minor surgery. It can usually be done using
local anesthesia. Your doctor will make a small
incision in your chest wall just below your collarbone. He or she then usually
threads the pacemaker wires (leads) through the incision into a large blood
vessel in the upper chest and into the heart. Your doctor uses X-rays to place
the leads in the heart. Using the same incision, your doctor creates a small
pocket under the skin to hold the pacemaker. He or she then attaches the leads
to the pacemaker. The procedure takes about an hour.
Temporary pacemakers are located
outside the body and attached to the heart by a wire threaded through a neck
vein or leg vein or through the chest wall. Temporary pacemakers are most
commonly used for a short time following heart surgery or in emergency
Most people stay overnight in the
hospital after having a pacemaker implanted and typically go home the next day.
But sometimes, the surgery is done as an
outpatient procedure, which means you do not need to
stay overnight in the hospital.
Most people return to normal
activities after a few weeks. For several weeks after
having a pacemaker implanted, you should avoid vigorous physical activity that involves the upper body.
activities and situations can interrupt the signals sent by the pacemaker to
the heart. You may need to adapt some of your activities. Follow your doctor's
specific instructions about care and precautions if you have a
Once or twice a year your doctor will
check your pacemaker and adjust it, if needed.1 In between checkups at your doctor's office, you will probably send information from your pacemaker to your doctor. You will do this by using a telephone or the Internet.
pacemakers are powered by batteries. The batteries usually last 5 to 15 years
before they need to be replaced.
Your doctor might recommend that you get a pacemaker if:
Pacemakers stimulate the heart to
speed up when it beats too slowly. They can also substitute for the natural
pacemaker of the heart (SA node) or the heart tissue that
regulates the beating of the ventricles (AV node).
Pacemakers allow people to return to normal,
active lives. Most people have very few limitations, if any.
There are several risks to getting a pacemaker. But risks
vary for each person. The chance of most problems is low.
The procedure to implant a pacemaker is safe and most people do well afterward. Afterward, you will see your doctor regularly to check your pacemaker and make sure you don't have any problems.
If problems happen during the procedure, doctors can likely fix them right away.
Problems after the procedure can be minor, like mild pain, or serious, like an infection. But your doctor can solve most of these problems. And most people do not have long-term issues with their pacemakers.
In rare cases, people feel
throbbing in the neck, chest fullness, or lightheadedness when the pacemaker
sends out impulses. Talk to your doctor about what types of side effects you
may expect from your pacemaker.
In rare cases, pacemakers are recalled by the maker of the pacemaker. A recall means that the pacemaker has a problem that needs to be watched closely or fixed.
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Epstein AE, et al. (2013). 2012 ACCF/AHA/HRS focused update incorporated into the ACCF/AHA/HRS 2008 guidelines for device-based therapy of cardiac rhythm abnormalities. Circulation, 127(3): e283–e352.
Res JCJ, et al. (2004). Pneumothorax resulting from subclavian puncture: a complication of permanent pacemaker lead implantation. Netherlands Heart Journal, 12(3): 101–105.
Akoum NW, et al. (2008). Pacemaker therapy. In EG Nabel, ed., ACP Medicine, section 1, chap. 7. Hamilton, ON: BC Decker.
Baddour LM, et al. (2010). Update on cardiovascular implantable electronic device infections and their management. A scientific statement from the American Heart Association. Circulation, 121(3): 458–477.
Swerdlow CD, et al. (2012). Pacemakers and implantable cardioverter-defibrillators. In RO Bonow et al., eds., Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 9th ed., vol. 1, pp. 745–770. Philadelphia: Saunders.
ByHealthwise StaffPrimary Medical ReviewerE. Gregory Thompson, MD - Internal MedicineSpecialist Medical ReviewerRakesh K. Pai, MD, FACC - Cardiology, Electrophysiology
Current as ofMarch 12, 2014
Current as of:
March 12, 2014
E. Gregory Thompson, MD - Internal Medicine & Rakesh K. Pai, MD, FACC - Cardiology, Electrophysiology
How this information was developed to help you make better health decisions.
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