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All the answers published in this website are written by Verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

Will taking Flecainide for A-Fib cause prolonged QT?

Query: Hello doctor, I am 50 years with PAF. My first A-Fib was five years ago. I converted on my own. It went away for five years and in the year end, I started a keto diet and went into A-Fib twice and converted on my own. Started keto again and went into A-fib twice again and converted on my own. My ca...  Read Full »

Dr. Ilir Sharka


Answer: Hello, Welcome to icliniq.com. I passed carefully through your medical history and would like to explain that you are right when you worry about your current medications. Both Prozac and Flecainide increase QTc interval and may predispose for arrhythmia. I would recommend stop continuing their conco...  Read Full »

Is it safe to take Flecainide 50 mg for two weeks?

Query: Hello doctor, I am a 30 year old male, who is a competitive athlete. I do not have any structural or plumbing heart issues. I have been diagnosed with WPW accidentally, and I am waiting for an ablation in 17 days. I am mostly asymptomatic, and I never had any extremely rapid heart rates. My resting...  Read Full »

Dr. Amiya Kumar Chattopadhyay


Answer: Hi, Welcome to icliniq.com. In WPW (Wolff-Parkinson-White) syndrome, there is a chance of rhythm disturbance, cardiac rate , and it is episodic in nature. I can present as palpitation, but the timing cannot be predicted. Regarding Flecainide, I do not think you need to continue for next two wee...  Read Full »

Shall I get chemical stress test to know the reason for tachycardia?

Query: Hello doctor, I am a 55 year old postmenopausal woman, who is 223 pounds and 5 foot 8 inches height. I have no known heart conditions except for many PVCs and PACs. I was recently diagnosed and picked up on a 48-hour Holter with atrial flutter. My doctor did not say that I had aFib. Doctor wants me ...  Read Full »

Dr. Sagar Ramesh Makode

Cardiologist, General Medicine Physician, Internal Medicine Physician, Family Physician, General Practitioner

Answer: Hello, Welcome to icliniq.com. Episodic tachycardia in the setting of PAC and PVC (premature atrial and ventricular contractions) is suggestive of arrhythmia, may be atrial fibrillation or flutter. We should try to find the cause for it. Do you smoke or have alcohol or any other stimulant drugs...  Read Full »

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Disclaimer: All health Q&As published on this website is not intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek the advice from your physician or other qualified health-care providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website.