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Pacemaker Implant

What is a pacemaker?
A pacemaker is a small implanted device that treats abnormal heart rhythms called arrhythmias. Specifically, a pacemaker treats slow arrhythmias called bradycardia. A pacemaker can usually eliminate symptoms like shortness of breath, fatigue, and dizziness caused by bradycardia.

Arrhythmias result from a problem in your heart's electrical system. Electrical signals follow a certain path throughout the heart. It is the movement of these signals that causes your heart to contract. During bradycardia, however, too few signals flow through the heart. To learn more about your heart's electrical system, go to the Heart & Blood Vessel Basics section.

A pacemaker restores your heart to a normal rhythm. The pacemaker can also
adjust to your body's needs. This is because the device has sensors that can
detect:

• When you rest and need a slow heart rate
• When you exercise and need a faster heart rate

Perhaps your heart does a good job of regulating your heart rhythm most of the time. A pacemaker is used as backup treatment only when your heart needs it.

In other cases, a person's heart can no longer create its own electrical signals, or send them down the proper pathways. For example, sometimes aging, or an ablation procedure in certain parts of the heart, can make pacemaker therapy necessary. In such cases the pacemaker might deliver continual treatment, in order to cause each heartbeat.

The pacemaker delivers electrical signals to the heart. The device does this by sending tiny amounts of electrical energy (too small to feel) to either the top or the bottom chambers of the heart, or to both.

A device implant is a procedure that uses local numbing. General anesthesia usually is not needed.

How is the implant procedure done?
A pacemaker system has two parts.
Device—the device is quite small and easily fits in the palm of your hand. It contains small computerized parts that run on a battery.
Leads—the leads are thin, insulated wires that connect the device to your heart. The leads carry electrical signals back and forth between your heart and your device.

Your doctor inserts the leads through a small incision, usually near your collarbone. Your doctor gently steers the leads through your blood vessels and into your heart. Your doctor can see where the leads are going by watching a video screen with real-time, moving x-rays called fluoroscopy.

The doctor connects the leads to the device and then tests to make sure both work together deliver treatment. Your doctor then places the device just underneath your skin and stitches the incision closed.

What can I expect?
Usually you are told not to eat or drink anything for a number of hours before the procedure. You undress and put on a hospital gown or sheet. Your procedure will be performed in a ”cath lab." You lie on an exam table and an intravenous (IV) line is put into your arm. The IV delivers fluids and medications during the procedure. The medication makes you groggy, but not unconscious.

The doctor makes a small incision near your collarbone to insert the leads. The area will be numbed so you shouldn't feel pain, but you may feel some pressure as the leads are inserted. You may be in the hospital overnight, and there may be tenderness at the incision site. Most people have a fairly quick recovery.

Important Safety Information
Medications, procedures and tests can have some risks and possible side effects. Results may vary
from patient to patient. This information is not meant to replace advice from your doctor. Be sure to talk
to your doctor about these risks and possible side effects.

A pacemaker system can monitor and treat your heart rhythm by delivering electrical energy to pace your heart when it senses a slow rhythm. But it is not for everyone, including patients with certain steroid allergies. Patients who have additional medical conditions that may not allow the pacemaker to function appropriately should not receive a device. Procedure risks include infection, tissue damage and kidney failure. In some cases, the device may not respond to your heart rhythm. In rare cases severe complications or device failures can occur. Electrical or magnetic fields can affect the device. Only your doctor knows what is right for you.

GUIDANT is a trademark and HEARTISTRY is a service mark of Guidant Corporation. All other brand names mentioned are used for identification purposes only and are trademarks of their respective owners.

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Medical Professionals: 1.800.CARDIAC (227.3422) Toll Free
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www.guidant.com

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