Consultation on Heart Medications for Atrial Fibrillation Management - Cardiology

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Cardiac medication consultation


Dear Director He,
My mother has been undergoing treatment for atrial fibrillation for the past three years.
Initially, she was prescribed Dronedarone, but it was discontinued due to hypothyroidism.
Subsequently, she switched to other medications such as Sotalol and Metoprolol, but the results were not satisfactory.
In July 2016, she returned to Dronedarone treatment.
During the period when Dronedarone was discontinued, she continued to supplement with Amiodarone.
The cardiologist has indicated that her heart rate and various cardiac indices are currently normal, so the future goal is to continue using Dronedarone along with Amiodarone for simultaneous treatment.
I would like to ask you, Director He, about the risks associated with high frequency of atrial fibrillation, which can lead to unpredictable complications.
While Dronedarone can cause hypothyroidism, I have reviewed some related medical information.
Considering the balance of risks and benefits, is it feasible to use Dronedarone in conjunction with timely supplementation of Amiodarone, essentially employing both medications simultaneously for treatment?
Thank you for taking the time to address my questions.
My mother takes the following medications every morning: 5 mg of Bisoprolol, 110 mg of Dabigatran, 200 mg of Dronedarone (half a tablet of 100 mg in the evening), and 50 mcg of Amiodarone.

JJ, 30~39 year old female. Ask Date: 2017/03/11

Dr. He Dongjin reply Cardiology


Hello, currently this combination seems to be the most ideal, which is to use both treatment methods mentioned above simultaneously.
Changhua Hospital cares about you.

Reply Date: 2017/03/11

More Info


When managing atrial fibrillation (AF) in patients, especially those with a history of thyroid issues and other comorbidities, it is crucial to carefully consider the medication regimen. Your mother’s case, involving the use of various medications such as Entresto (sacubitril/valsartan), Amiodarone (臟得樂), and others, highlights the complexity of treating AF while managing potential side effects and interactions.

Atrial fibrillation is a common arrhythmia that can lead to significant complications, including stroke and heart failure. The primary goals of treatment are to control the heart rate, restore normal rhythm if possible, and prevent thromboembolic events. Anticoagulation therapy is often necessary to reduce the risk of stroke, particularly in patients with additional risk factors such as hypertension, diabetes, or a history of heart failure.

In your mother’s case, the use of Amiodarone is notable. While Amiodarone is effective for rhythm control, it is associated with several side effects, including thyroid dysfunction, which can lead to hypothyroidism. This is particularly relevant since your mother has experienced thyroid issues previously. Regular monitoring of thyroid function is essential for patients on Amiodarone, and adjustments to the medication may be necessary based on thyroid hormone levels.

The combination of Amiodarone and Entresto is not uncommon, but it requires careful monitoring. Entresto is primarily used for heart failure management and can provide benefits in patients with reduced ejection fraction. However, it is essential to ensure that the patient’s renal function is stable, as both medications can affect kidney function.
In terms of the specific question about the simultaneous use of Amiodarone and Entresto, it is generally considered acceptable, provided that the patient is monitored closely for any adverse effects. The key is to ensure that the benefits of rhythm control with Amiodarone outweigh the risks associated with its side effects, particularly in the context of your mother’s thyroid condition.

Your mother’s current regimen, including the use of other medications like Apixaban (普栓達) for anticoagulation, seems appropriate given her stable heart rate and normal cardiac indices. However, it is crucial to maintain regular follow-ups with her cardiologist to monitor her response to treatment and adjust medications as necessary.
In summary, the simultaneous use of Amiodarone and Entresto can be a viable strategy in managing atrial fibrillation, especially in patients with heart failure. However, it requires careful monitoring of thyroid function, renal function, and overall cardiac status. Regular consultations with her healthcare provider will help ensure that her treatment plan remains effective and safe. Always discuss any concerns regarding medication changes or side effects with her cardiologist, as they can provide personalized advice based on her specific health needs.

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