Smartwatches & AFib: What Your Wrist Can—and Can’t—Tell You About Your Heart

Smartwatches are changing the way millions of people discover heart rhythm problems—especially atrial fibrillation (AFib). But how accurate are devices like the Apple Watch, Fitbit, Samsung Galaxy Watch? And what should you actually do if your watch alerts you to an irregular rhythm?

In this episode of EP-EDGE Heart Talk, cardiologist and cardiac electrophysiologist Dr. Niraj Sharma breaks down everything patients and caregivers need to know about smartwatch AFib detection, based on real science—not hype.

You’ll learn:

• How accurate smartwatches really are for detecting AFib (hint: very accurate when the signal is clean)
• Why false positives are common—especially in younger users
• What it means when your watch shows “Possible AFib” or “Inconclusive”
• How pacemakers, bundle branch blocks, and extra beats affect smartwatch readings
• Whether smartwatches can replace Holter monitors or track AFib after ablation
• When smartwatch alerts matter—and when they’re nothing to worry about
• How to use your device the right way to monitor heart health

This episode is designed for anyone who has ever wondered whether their AFib notification, irregular rhythm alert, or ECG recording is real, meaningful, or just an algorithm misfire.

EP-EDGE Heart Talk is your trusted voice for patient-friendly, accurate cardiology guidance—helping you understand your heart, your risks, and your options.

A-Fib Rhythm Control Explained: Cardioversion, Medications, and Ablation — What Patients Need to Know

Managing atrial fibrillation (A-Fib) goes far beyond simply slowing the heart rate. In this episode of EP-EDGE Heart Talk, Dr. Niraj Sharma—cardiologist and cardiac electrophysiologist—breaks down everything patients and caregivers need to understand about restoring normal rhythm, improving symptoms, and protecting long-term heart health.

Whether you’ve been recently diagnosed with A-Fib, are living with persistent or long-standing persistent A-Fib, or are exploring treatment options for a loved one, this episode guides you step-by-step through the entire rhythm control journey.

In This Episode You Will Learn:

✔ What Rhythm Control Really Means

• How rhythm control differs in paroxysmal A-Fib vs. persistent A-Fib
• Why restoring sinus rhythm often improves energy, breathing, and overall well-being
• When rhythm control is recommended based on symptoms

✔ Cardioversion: What to Expect

• Why cardioversion is essential for persistent and long-standing persistent A-Fib
• How the procedure is done safely in the hospital
• What patients feel during (and after) the procedure
• Rare but possible complications like mild skin irritation

✔ Antiarrhythmic Medications: Pros, Cons, and Required Monitoring

• Amiodarone: effectiveness, thyroid/lung/liver risks, and need for labs, X-rays, and eye exams
• Sotalol: who it’s for, QT monitoring, kidney checks, and required echocardiogram
• Flecainide & Propafenone: highly effective—but only for patients with no coronary disease, no blockages, and no stents; echo, stress test, and labs required before starting
• Dofetilide: safe for heart failure patients but requires hospital initiation

✔ A-Fib Ablation: The Modern Path to Restoring Rhythm

• What to expect during an ablation under general anesthesia
• How 3D mapping and electrical signals guide precision treatment
• Differences between RF ablation, cryoballoon ablation, and the newest technology—Pulse Field Ablation (PFA)
• Success rates for paroxysmal, persistent, and long-standing persistent A-Fib

✔ Post-Ablation Recovery and Monitoring

• What symptoms are normal in the early weeks
• How we track recurrence using ECGs, Holters, event monitors, loop recorders
• Why smartwatches are now essential tools for long-term rhythm tracking

Who This Episode Is For

• Patients recently diagnosed with A-Fib
• Individuals with persistent or long-standing persistent A-Fib
• Anyone considering cardioversion, antiarrhythmic medications, or A-Fib ablation
• Caregivers supporting family members with atrial fibrillation
• Patients confused about rhythm control vs. rate control
• Anyone seeking clear, simple explanations from a heart rhythm specialist

Why You Should Listen

A-Fib can be silent, subtle, or severely symptomatic — and the right rhythm control strategy can dramatically improve quality of life.
Dr. Sharma provides a compassionate, comprehensive, and easy-to-understand roadmap that helps patients make informed decisions and take control of their heart health.

If you have questions about this episode or want to suggest future topics, email us anytime at epedgcast@gmail.com
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EP-EDGE Heart Talk — Demystifying Your Heart, One Beat at a Time.

Atrial fibrillation—also known as AFib—is the most common heart rhythm disorder worldwide, and understanding it early can dramatically improve long-term outcomes. In this episode of EP-EDGE Heart Talk, Dr. Niraj Sharma breaks down AFib in a simple, clear, and empowering way designed specifically for patients and caregivers.

You’ll learn:

• What atrial fibrillation is and how it affects the heart
• The four types of AFib (paroxysmal, persistent, long-standing persistent, and permanent)
• Why early diagnosis matters and how AFib progresses over time
• Common symptoms—including subtle and overlooked signs
• The three pillars of AFib treatment:
  • Rate control and target resting heart-rate goals
  • Stroke prevention using the CHA₂DS₂-VASc score
  • Rhythm control through medications and catheter ablation
• How blood thinners reduce stroke risk, typical bleeding risks, and
  who may benefit from left atrial appendage occlusion (LAAO) devices like Watchman or Amulet
• When to consider AFib ablation and how success depends on the AFib type

This episode gives listeners the knowledge they need to understand AFib, ask informed questions, and take an active role in their care.

EP-EDGE Heart Talk — Guiding patients and caregivers, one heartbeat at a time.

If you have any questions or concerns, you can email Dr. Sharma at: epedgcast@gmail.com