The goal of alcohol septal ablation is to reduce the thickness of the overgrown heart muscle called the septum, which relieves the obstruction and improves blood flow.
Alcohol septal ablation is a minimally invasive cardiac procedure used to treat hypertrophic cardiomyopathy (HCM). HCM is a condition where the heart muscle, particularly the wall (septum) separating the two bottom chambers (ventricles), becomes abnormally thick. This thickening can obstruct the outflow of blood from the left ventricle into the aorta, making it harder for the heart to pump blood effectively to the body. This obstruction leads to symptoms like shortness of breath, chest pain, dizziness, and fainting.
Treating a heart condition requires expertise and dedication to each individual patient. Your AHN cardiologist is not only highly skilled in treating your hypertrophic cardiomyopathy (HCM), but also committed to supporting you through your treatment and beyond. By working in a multidisciplinary manner that connects with other areas of medicine, AHN offers a patient-centered approach to care that treats your whole health.
Emotions, concerns, or anxiety about any medical procedure are completely normal. Your AHN cardiologist and care team understand this and will be available throughout your care to help answer questions and guide you through the process. An alcohol septal ablation is done in an AHN hospital, specifically in our cardiac catheterization lab. This is a specialized hospital setting that allows for high-tech imaging and minimally invasive procedures.
Before your procedure, your care team will conduct all necessary tests and medical evaluations. These may include electrocardiogram (ECG), echocardiogram (an ultrasound of the heart), blood tests, and sometimes a cardiac MRI or CT scan. These help the doctors get a detailed picture of the heart's structure and function, confirm the diagnosis, and plan the procedure. You’ll also meet with your cardiologist and other specialists to discuss your medical history, your current status, and what the procedure entails. Your care team will let you know what medications you may need to stop taking prior to the alcohol septal ablation and will let you know what to expect for the procedure. If you have not had a cardiac catheterization to identify the septal artery anatomy, you will have one done. You’ll likely need to stay in the hospital for a couple of days to recover, and you need to arrange for someone to bring you home.
You’ll be made comfortable and have a chance to speak with your cardiologist and the overall care team. An alcohol septal ablation procedure is often performed under conscious sedation — sometimes called twilight sleep — rather than general anesthesia. The goal is to ensure you are comfortable, calm, and experience no pain during the procedure.
The doctor inserts a thin, flexible tube called a catheter into an artery, usually in the leg or arm. They then guide this catheter up to your heart. Using special imaging, they carefully find the exact small blood vessel that supplies blood to the thickened part of the septum. Once that specific blood vessel is identified, a very small amount of pure alcohol (ethanol) is injected directly into it through the catheter. The alcohol, when injected into that small blood vessel, causes a controlled and localized "heart attack" in just that tiny section of the thickened septum. This causes the muscle cells in that specific area to die and shrink over time, usually within a few weeks. As the thickened muscle shrinks, the obstruction to blood flow is reduced, allowing blood to pump out of the heart more easily and efficiently to the rest of the body.
Recovery involves both the initial period in the hospital and the long-term healing process at home.
Immediately after the procedure, the patient will be moved to a recovery area or an intensive care unit (ICU) for close monitoring. Nurses will continuously check your heart rhythm, blood pressure, and the site where the catheter was inserted. Most often, patients will usually need to lie flat for several hours after the procedure, especially if the catheter was inserted in the groin, to prevent bleeding at the insertion site. Mild chest discomfort or pain is common after the procedure because of the effect of alcohol on the heart muscle. Medications will be provided to manage this.
There’s a small risk of temporary or sometimes permanent changes in heart rhythm (arrhythmias) after the procedure. Patients might need to have a temporary pacemaker inserted, or, in some cases, a permanent pacemaker might be necessary if the heart's natural electrical system is affected.
The typical hospital stay is usually two to four days, depending on how well the patient is recovering and whether any complications arise.
Once cleared to go home, you’ll be given instructions for any new medications or adjustments to existing ones you’re taking. You’ll also be advised to avoid heavy lifting, strenuous activities, and activities that put strain on the catheter insertion site (e.g., stair climbing might be limited).
It's important to remember that the full benefits of the procedure — meaning the maximum shrinkage of the muscle and improvement in symptoms — may take several weeks to become apparent. The heart needs time to remodel.
Regular follow-up appointments with the cardiologist are essential to monitor your recovery. These typically include echocardiograms to assess how much the septum has thinned and if the obstruction has improved.
AHN is here to help you understand alcohol septal ablation and wants you to feel confident in your care—should you need this procedure. Your AHN care team is your go-to resource to find answers to your questions and talk with you about any concerns you may have. Our patients often have the following questions, so we’ve provided the answers below. Your care team is still there for you to provide greater explanation when and if you need it.
The success rate of alcohol septal ablation in reducing the obstruction and improving symptoms is generally high, often reported between 85% to 95%.* Success is typically defined by a significant reduction in the pressure gradient (the difference in pressure across the obstruction) and an improvement in the patient's symptoms (like shortness of breath or chest pain). While most patients experience substantial relief, the degree of improvement can vary. It's important to remember that it may take several weeks for the full effect of the procedure to be realized as the thickened muscle gradually shrinks.
The recovery process can be divided into a few phases:
While generally safe and effective, like any invasive procedure, alcohol septal ablation carries potential risks. These include:
The medical team will thoroughly discuss these risks with the patient before the procedure, weighing them against the potential benefits based on the individual's specific health condition.
If you do not have a current HCM diagnosis, you can make an appointment with a general cardiologist to talk about your concerns and next steps. To get started, call (412) DOCTORS 412-362-8677 to schedule your appointment.
If you already have an HCM diagnosis and are looking to determine if an alcohol septal ablation procedure is right for you or if you want a second opinion from the AHN HCM Program about your treatment plan, you can schedule a consultation with our HCM Program Coordinator by calling 412-359-4869.
