About Arrhythmia Surgery
Arrhythmia surgery, a specialized field within cardiovascular surgery, is designed to treat abnormal heart rhythms that cannot be managed through medication or other non-invasive treatments. Arrhythmias, which include conditions like atrial fibrillation, ventricular tachycardia, and supraventricular tachycardia, occur when the electrical impulses that regulate the heart's rhythm become disordered, leading to irregular heartbeats.
What is Arrhythmia Surgery?
Arrhythmia surgery is a specialized field within cardiovascular surgery focused on correcting abnormal heart rhythms that cannot be effectively managed through medication or other non-invasive treatments. Arrhythmias, such as atrial fibrillation, ventricular tachycardia, and supraventricular tachycardia, occur when the electrical impulses that regulate the heart's rhythm become disordered. This leads to irregular heartbeats that can range from benign to potentially life-threatening, thus necessitating surgical intervention.
One of the most common procedures to address arrhythmias is catheter ablation. This minimally invasive technique involves inserting a thin, flexible tube called a catheter into a blood vessel, usually in the groin or wrist. The catheter is then guided to the heart using real-time imaging technology. Once in place, the tip of the catheter delivers energy—either radiofrequency or cryotherapy—to target and destroy the small areas of heart tissue that are causing the abnormal electrical signals. By eliminating these problematic areas, catheter ablation can restore normal heart rhythm and significantly reduce or eliminate the symptoms of arrhythmia.
For more complex cases, especially those that involve multiple arrhythmias or structural heart issues, surgical ablation may be performed. This procedure often takes place during open-heart surgery, which might be conducted for other reasons, such as valve repair or coronary artery bypass grafting (CABG). In surgical ablation, the surgeon makes precise incisions or applies energy to the heart tissue to interrupt the pathways that are causing the arrhythmias. This approach can be highly effective, particularly for patients who have not responded well to catheter ablation or other treatments.
Another technique, known as maze surgery, involves creating a series of precise incisions in the atria (the upper chambers of the heart) to form a "maze" of scar tissue. These scars do not conduct electrical impulses, thus guiding the electrical signals along a controlled pathway that maintains a normal heart rhythm. Maze surgery is often used to treat atrial fibrillation and can be performed using traditional open-heart surgery methods or less invasive approaches, such as minimally invasive thoracoscopic surgery.
Implantable devices, such as pacemakers and implantable cardioverter-defibrillators (ICDs), are also used in the treatment of arrhythmias. These devices are surgically placed under the skin and connected to the heart with leads. Pacemakers help regulate slow heart rhythms by sending electrical impulses to prompt the heart to beat at a normal rate, while ICDs monitor the heart rhythm and deliver a shock if a dangerous arrhythmia is detected.