Pacemaker Implantation

Pacemaker implantation is a surgical procedure in which a small battery-powered device is placed under the skin of the chest to regulate the heartbeat.

A healthy heart beats at a steady rhythm controlled by its own electrical system. When that system fails — beating too slowly, too fast at the wrong times, or with long pauses — the heart cannot pump enough blood to the body. A pacemaker sends tiny electrical signals through thin wires called leads, which are threaded into the heart through a large blood vessel. These signals tell the heart muscle when to contract, keeping the rhythm safe and steady. Modern pacemakers only activate when they detect that the heart needs help; at other times they simply monitor and wait.

A pacemaker is recommended when a person's heart beats too slowly or pauses in a way that causes symptoms or poses a danger to health. The decision is based on heart-monitoring test results and the patient's overall condition.

• Bradycardia (a persistently slow heart rate) that causes dizziness, fainting, or extreme fatigue
• Sick sinus syndrome — a condition where the heart's natural pacemaker node fires unreliably, causing the rate to fluctuate between too slow and too fast
• Heart block — a delay or blockage in the electrical signal travelling from the upper chambers (atria) to the lower chambers (ventricles), classified as second- or third-degree depending on severity
• Fainting episodes (syncope) confirmed by monitoring to be caused by a slow or pausing heart
• Heart failure in selected patients, where a special type called cardiac resynchronisation therapy (CRT) pacemaker helps both sides of the heart pump in coordination
• Certain inherited heart rhythm disorders that put the patient at risk of dangerously slow rates

Not everyone with a slow heart rate needs a pacemaker. Doctors generally avoid implantation when the slow rate is caused by a reversible problem, such as a medication effect or a thyroid disorder that can be treated on its own. A pacemaker is also not suitable as a first response to a fast, irregular rhythm such as atrial fibrillation (an uncoordinated quivering of the upper heart chambers) unless a slow rate is also present.

• Slow heart rate caused by medication that can simply be stopped or adjusted
• Slow heart rate due to an underactive thyroid (hypothyroidism) that has not yet been treated
• Active, uncontrolled infection anywhere in the body — implantation is postponed until the infection clears
• Patients whose slow rhythm causes no symptoms and carries no proven danger on monitoring

Pacemaker implantation is a well-established procedure, but like any surgical intervention it carries recognised risks that your care team will discuss with you beforehand.

• Bruising, swelling, or tenderness at the implant site — the most common and usually mild
• Infection at the wound or, less commonly, on the device or leads inside the chest, which may require antibiotics or, rarely, removal of the device
• Bleeding under the skin forming a haematoma (a collection of blood) near the device pocket
• A lead shifting from its correct position in the heart shortly after implantation, which may require a corrective procedure
• Pneumothorax (air leaking into the space around the lung), caused by the needle used to access the blood vessel during lead placement — usually managed with a small chest tube
• Damage to a blood vessel or, very rarely, to the heart wall during lead insertion
• Arrhythmia (an irregular heartbeat) triggered during the procedure, usually short-lived
• Pacemaker malfunction over time due to battery depletion or a lead problem, which is why regular device checks are scheduled throughout the device's life

Good preparation helps the procedure go smoothly and lowers the risk of complications. The hospital team will give specific instructions, but the following covers what is typically expected.

Before the procedure, patients are usually asked to fast — to avoid food and liquids — for a number of hours. Your doctor will specify how long based on the planned anaesthetic approach. Blood thinners are often paused for several days beforehand, because they increase bleeding risk; your cardiologist (heart specialist) will advise whether and for how long to stop them. Smoking and alcohol should be avoided in the days leading up to surgery, as both can affect healing and the body's response to anaesthetic. If you have diabetes and take medication to control blood sugar, the team will provide specific guidance on managing it during the fasting period.

Several tests are usually carried out to make sure the procedure is as safe as possible. These commonly include:

• An EKG (electrocardiogram — a recording of the heart's electrical activity) to document the exact rhythm problem
• A Holter monitor study (a portable EKG worn for a day or two) if the rhythm problem is not constant
• Blood tests, including a check of clotting ability, kidney function, and blood count
• A chest X-ray to show the size and position of the heart and lungs
• An echocardiogram (an ultrasound scan of the heart — also called USG jantung) to assess how well the heart muscle is pumping and to check the heart's anatomy before placing leads
• Allergy and medication review to identify any reactions to anaesthetics, antiseptics, or metals in the device

On the day of the procedure, the following steps typically take place, though the exact sequence and details may vary between hospitals and patients:

• 1. You change into a hospital gown and an intravenous (IV) line is placed in a vein in your arm to deliver fluids and medications.
• 2. The chest and shoulder area on the side chosen for implantation (usually the left) is shaved, cleaned, and covered with sterile drapes.
• 3. Local anaesthetic (numbing medicine injected into the skin) is given so you are awake but feel no sharp pain; sedation is often also given to keep you relaxed and drowsy throughout.
• 4. A small cut is made just below the collarbone, and the surgeon threads the lead or leads into a large vein and guides them under X-ray imaging (fluoroscopy) into the correct position inside the heart.
• 5. Each lead tip is anchored to the heart wall, and electrical testing confirms it is sensing and pacing correctly.
• 6. A small pocket is created under the skin and fat of the upper chest, and the pacemaker generator (the battery and computer unit) is placed inside it.
• 7. The leads are connected to the generator, final electrical checks are performed, and the wound is closed with stitches or staples.
• 8. A dressing is applied over the wound and a chest X-ray is taken to confirm the lead positions before you are moved to a recovery area.

After implantation, most patients are monitored in hospital for at least one night so the team can watch the pacemaker's performance and check for early complications such as lead displacement or bleeding. The length of the hospital stay depends on the patient's overall health and how the recovery progresses. Before discharge, the device is checked using a programmer — a wireless tool held over the chest that reads the pacemaker's settings and any events it has recorded.

• Arm and shoulder movement on the implant side is usually restricted for several weeks to allow the leads to settle firmly in place; your care team will specify what activities to avoid and when normal movement can gradually return
• The wound site should be kept dry for a number of days as directed, and any dressing changes will follow the hospital's specific instructions
• Driving is typically not permitted for a period after the procedure — the exact duration varies by country and individual circumstances, so ask your doctor
• Strenuous exercise and heavy lifting should be avoided during the initial recovery phase; light walking is usually encouraged relatively soon
• Certain strong magnetic fields can interfere with the pacemaker — patients receive a card and education about which devices to avoid (such as some industrial equipment) and how to handle airport security safely
• MRI scans require special attention; some modern pacemakers are MRI-compatible, but the cardiology team must always be informed before any MRI is scheduled
• Follow-up appointments are scheduled at intervals — typically within weeks of discharge and then regularly throughout the device's life — to check the battery level, lead function, and stored rhythm data
• The battery in a pacemaker lasts for a number of years; when it nears the end of its life, the generator is replaced in a shorter, simpler procedure while the existing leads are usually kept in place
• Patients are encouraged to carry their pacemaker identification card at all times and to inform all healthcare providers, including dentists, that they have a pacemaker