If your cardiologist has mentioned a pacemaker, you probably have questions about what it does and how it may affect your life. The good news is that today’s pacemakers are smaller, more reliable, and more precise than ever before. Millions of people with pacemakers continue to live active, full lives.
This guide explains how pacemakers work, who may need one, and what to expect during the implant process at Lake Nona ASC.
A pacemaker is a small, battery-powered device implanted under the skin, usually below the collarbone. Its job is to help the heart maintain a normal, steady rhythm by sending small electrical signals when needed.
Your heart depends on its own electrical system to beat properly. When those signals slow down or misfire, the heart may not pump efficiently. This can lead to symptoms such as:
A pacemaker continuously monitors your heartbeat and steps in only when necessary.
A pacemaker is not the same as an implantable cardioverter-defibrillator (ICD). A pacemaker does not shock the heart. Instead, it uses low-energy pulses to keep the heart beating steadily. ICDs are designed for patients at risk of sudden cardiac arrest. Both devices are offered and managed by the specialists at Lake Nona ASC.
A pacemaker system has two main parts:
The generator monitors your natural heart rhythm. If your heart beats too slowly or pauses abnormally, the device sends a small electrical signal through the leads to prompt a heartbeat.
Single-Chamber Pacemakers
Use one lead, usually connected to the right ventricle. These are often used for simpler rhythm problems.
Dual-Chamber Pacemakers
Use two leads, one connected to the atrium and one to the ventricle, to better mimic the heart’s natural coordination.
Biventricular pacemakers
Uses three leads, one connected to the atrium and one to each ventricle, to help the heart pump better.
Bradycardia means the heart beats too slowly, usually under 60 beats per minute at rest. It becomes a concern when it causes symptoms such as fainting, fatigue, or shortness of breath.
A cardiologist determines candidacy through a full evaluation and diagnostic testing.
At Lake Nona ASC, our specialists may use:
These tests help evaluate the heart’s electrical activity and rhythm problems.
Pacemakers are used in adults of all ages, including active individuals. Your doctor will consider your lifestyle and activity level when selecting the best device for you.
Pacemaker implantation is a routine, minimally invasive procedure that typically takes 1 to 2 hours.
The procedure is performed under local anesthesia with light sedation. A small pocket is created under the skin near the collarbone for the generator. The leads are then guided through a vein into the heart using imaging technology.
Most patients go home the same day and may require you to wear an arm sling for the first few days.
For the first few weeks, avoid heavy lifting and raising the arm on the implant side above shoulder level.
Pacemaker batteries typically last 10–15 years. When the battery needs replacement, the generator can usually be changed without replacing the leads.
If you are struggling with symptoms of an irregular heart rhythm, Lake Nona Surgery Center offers a state-of-the-art outpatient setting for your care.
Our cardiovascular specialists provide a dedicated team approach from consultation through recovery.
Ready to talk through your options? Contact us to schedule a consultation and take the first step toward a steadier rhythm and a healthier life.