A permanent pacemaker is a small electronic device implanted to treat abnormal slow heart rhythms, a condition known as bradycardia. In some patients, the heart beats too slowly because the heart’s natural electrical system is not functioning properly. This can reduce blood supply to the brain and body, leading to symptoms such as dizziness, fainting, fatigue, weakness, breathlessness, or blackouts. A pacemaker helps maintain a regular and adequate heart rate so that the heart can pump blood effectively. Pacemaker implantation is commonly advised in patients with conditions such as complete heart block, sick sinus syndrome, symptomatic slow heart rate, or certain rhythm disturbances after heart attack or heart surgery. The need for a pacemaker is usually identified through ECG, Holter monitoring, or other heart rhythm tests. In many patients, timely pacemaker implantation can significantly improve quality of life and prevent dangerous complications related to very slow heartbeats.
The procedure is performed in a specialized cardiac catheterization laboratory or operation theatre under local anesthesia and mild sedation. A small incision is made below the collarbone, usually on the left side of the chest. Thin insulated wires called leads are carefully passed through a vein into the heart chambers under X-ray guidance. These leads are then connected to the pacemaker device, which is placed under the skin in the upper chest area.
The pacemaker continuously monitors the heart rhythm and automatically sends tiny electrical impulses whenever the heart rate becomes too slow. Patients do not usually feel these impulses. Depending on the patient’s condition, different types of pacemakers may be used, including single-chamber, dual-chamber, or specialized devices designed for heart failure patients.
The procedure usually takes about one to two hours, and most patients remain awake but comfortable throughout the treatment. Patients are usually discharged after a few days depending on their overall condition and recovery. Mild discomfort or swelling near the implant site may occur initially, but recovery is generally smooth. Doctors usually advise avoiding heavy arm movements for a few weeks to allow proper healing of the leads.
Modern pacemakers are highly reliable and can greatly improve symptoms, energy levels, exercise tolerance, and overall quality of life. The pacemaker battery, also called the generator, usually lasts around 7 to 10 years depending on device usage and settings. When the battery becomes low, the generator can be replaced through a relatively simple procedure while the leads are often left in place if functioning normally. With regular follow-up and proper care, patients with pacemakers can safely continue most of their normal daily activities and lead active lives.
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