Do I need ablation for atrial fibrillation?

Hi,

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Atrial fibrillation (AF) is a type of cardiac arrhythmia in which there is an irregular contraction in the upper region of the heart (atria). Patients with AF may experience palpitations, dyspnea, tiredness, dizziness, and even worry. In AF the atrium doesn’t squeeze normally, so blood can pool inside the heart. This increases the risk of blood clots forming. If a clot goes to the brain, it can cause a stroke. Sometimes clots can move to other parts of the body, such as the limbs, and cause a reduction in blood flow (limb ischemia).

AF can be paroxysmal or persistent/permanent depending on the underlying reason and clinical course. Appropriate medical management is crucial, regardless of type, and many patients require anticoagulant (blood-thinning) therapy to lower the risk of stroke.

Decisions on anticoagulation are a balance between the risk of stroke and the risk of bleeding. Your healthcare practitioner will use validated scoring methods to estimate your risk of having a stroke. One such example of a scoring method is the CHA₂DS₂-VASc score (congestive heart failure, hypertension, age ≥75 years (2 points), diabetes mellitus, stroke/transient ischemic attack/systemic embolism (2 points), vascular disease, age 65–74 years, and sex category (female)). Your healthcare practitioner will use the HAS-BLED (hypertension, abnormal renal and/or liver function, stroke, bleeding history or predisposition, labile inr, elderly (age >65 years), and drugs and/or alcohol use) score to estimate your risk of having a bleed.

As a rule, in men with a CHA2DS2-VASc score of 2 or higher and in women with a score of 3 or higher, strong anticoagulation is indicated if the bleeding risk can be tolerated. If you have a high risk of bleeding, your doctor will talk through the risks and benefits with you before recommending therapy. Anticoagulants have an increased risk of bleeding, although there are effective reversal techniques available when necessary in emergencies.

Your sensations of lightheadedness and shortness of breath with exertion imply that your heart rate is not well controlled with exertion. This could mean that your present meds need to be adjusted. I would urge you discuss with your cardiologist whether optimization of your heart rate management is required.

There are a number of reasons that might precipitate AF or make it difficult to control the rate of the heart. Infection, dehydration, excessive caffeine or alcohol, mental stress and inadequate sleep. By managing these factors, you can help stabilize your heart rate and reduce fluctuations in your symptoms.

It is also important to evaluate and treat any underlying conditions that may be contributing to AF such as excessive blood pressure, coronary artery disease, structural heart disease, thyroid disorders, or electrolyte imbalances.

You should know these primary goals of AF therapy: Regulation of the heart rate. Restoring and maintaining a regular heart rhythm as necessary. Anticoagulation is indicated for prevention of stroke. Root cause identification and correction. Consider catheter ablation or other procedures, if appropriate.

Some patients may be able to return to normal sinus rhythm with antiarrhythmic medicines. If medication therapy is unsuccessful or the patient is symptomatic or clinically unstable, electrical cardioversion is employed. The procedure is done under anesthesia and involves delivering a regulated electrical shock to restore the heart to a normal rhythm. With proper care, it is often a safe and successful procedure.”

Some patients may be recommended for a catheter ablation by an electrophysiologist. The treatment uses special catheters threaded through a vein into the heart to detect and destroy the areas that trigger AF. In some cases, a surgical maze procedure could be used.

Many individuals have done very well with catheter ablation. Success, however, depends on the underlying cause and kind of AF, and in some people, the arrhythmia may come from multiple parts of the heart and recur. Some people, even after a successful ablation, may need medication such as beta-blockers and long-term anticoagulation depending on their risk of stroke.

I hope this information helps to clarify your issue and the possibilities for therapy. Please do not hesitate to ask if you have any other questions or concerns.

Happy to help you more. Best regards.