Atrial fibrillation
The electrical wire-like setup inside the heart can cause the heart to slow or speeden up at times. The condition in which the heart speeds up and beats very fast is called tachyarrhythmia or tachycardia. Heart palpitations are the most common symptoms of atrial fibrillation.
Atrial fibrillation can damage the coordination or synchrony of the upper portion of the heart (atrium). An altered heart rhythm can cause the heart to beat 600-700 times per minute. When the heart rate is measured for the patient with atrial fibrillation, it might be anywhere between 150-200 beats per minute.
Symptoms Of Atrial Fibrillation
Heart palpitations
Uncomfortable feeling
Shortness of breath
Risk factors of atrial fibrillation
Age
Ageing can cause structural changes in the heart, increasing the risk of atrial fibrillation.
Poor control of diabetes
Uncontrolled blood sugar levels can damage the heart and disrupt its electrical activity.
High blood pressure
Long-standing high BP strains the heart and affects its normal rhythm.
Obesity
Excess weight and related conditions like sleep apnea can trigger irregular heart rhythms.
Can atrial fibrillation cause stroke?
Atrial fibrillation in people over the age of 70 can lead to stroke. The increased heart rate at the upper portion of the heart increases the risk of blood clotting in that particular region. This clot can travel to the brain and cause stroke. Thus usually the doctors would prescribe blood thinners for these patients who have the risk of stroke. Also for the patients who come in with stroke, tests are done to determine whether atrial fibrillation is the cause.
Treatments for atrial fibrillation
Medications
Medications like amiodarone, bisoprolol and metoprolol are prescribed for patients who suffer from atrial fibrillation. These can help prevent future episodes of atrial fibrillation in the patient. Amiodarone is a very strong medication and comes with some manageable side effects.
Cardiac electrophysiology study and RF ablation procedure
This procedure is recommended for people who experience recurrent heart palpitations because of atrial fibrillation. Usually, the palpitations start from the back side of the heart where the four pulmonary veins join. This procedure is done to disconnect the electrical connection between the heart and the pulmonary veins. This is a non-surgical procedure in which the wire is sent through the leg to the left atrium and an RF (Radiofrequency) pulse is given to the pulmonary veins. After the veins are disconnected, the electrical firing to the heart does not happen which in turn drastically reduces the risk of atrial fibrillation. This procedure can even totally cure the problem of atrial fibrillation in some people. Medications are also prescribed for a certain time.
This procedure is usually recommended in the early stages since it is not very effective if the heart is badly damaged due to frequent and repeated heart palpitations.
Cryoablation for Atrial Fibrillation
When medications are unable to control atrial fibrillation, catheter ablation is considered to correct the abnormal electrical signals in the heart.
Cryoablation is an advanced form of catheter ablation that uses controlled cold energy instead of heat.
In atrial fibrillation, irregular electrical signals most often arise near the pulmonary veins. Cryoablation works by freezing these trigger areas, electrically isolating them so they can no longer disrupt the heart’s natural rhythm.
While radiofrequency ablation treats atrial fibrillation using heat, cryoablation achieves the same goal using controlled cold energy, allowing precise and uniform isolation of abnormal signals.
The procedure is minimally invasive. A thin catheter with a balloon at its tip is guided through blood vessels to the heart, where precise cold energy is delivered only to the targeted areas, while protecting surrounding healthy tissue.
Advantages of Cryoablation:
- Performed without general anaesthesia in most patients
- Minimally invasive procedure with no surgical cuts or scars
- Room shifting on the same day in most cases
- Discharge typically possible within 24 hours
- Helps restore and maintain a normal, stable heart rhythm
- Reduces the long-term risk of stroke associated with atrial fibrillation
- Precise treatment that targets only abnormal electrical pathways
- Preserves surrounding healthy heart tissue
- Faster recovery and early return to daily activities
- Safe, proven, and widely established treatment option
Cryoablation may be recommended for patients who:
- Continue to have symptoms despite medication
- Have recurrent or persistent atrial fibrillation
- High risk of stroke
The decision to perform Cryoablation is made after careful evaluation by a cardiac electrophysiologist, based on the type of atrial fibrillation and overall heart health.
Pulsed Field Ablation (PFA): The Next Generation of AF Treatment
As advancements in heart rhythm care continue, Pulsed Field Ablation (PFA) represents a newer, non-thermal approach to treating Atrial Fibrillation.
Instead of using heat or freezing, PFA delivers ultra-short electrical pulses to selectively treat the areas responsible for abnormal heart rhythms. This mechanism—called electroporation—targets only the heart cells involved in AF, while preserving surrounding structures.
What Makes It Different?
While conventional ablation methods are effective, they rely on thermal energy. PFA introduces a fundamentally different approach:
- Selective targeting
Focuses on abnormal rhythm-causing cells with minimal impact on nearby tissues - Non-thermal technology
Avoids heat or freezing, reducing unintended tissue injury - Enhanced safety profile
Lower risk to sensitive structures such as the esophagus and nearby nerves - Efficient procedure
Faster energy delivery may reduce overall procedure time
A Step Forward in Precision Care
Pulsed Field Ablation is part of the evolving landscape of cardiac electrophysiology—offering a more refined and tissue-selective approach to AF treatment. Clinical studies show that it is at least as effective as conventional ablation, with added safety advantages.
Is PFA Right for You?
Not every patient requires the same approach. The choice of ablation technique depends on multiple factors, including the type of AF and individual health conditions. Your cardiac electrophysiologist will recommend the most appropriate treatment for you.
Outcomes
Symptom relief
Most patients experience significant reduction in palpitations, breathlessness, and fatigue.
Improved heart rhythm control
Ablation helps restore and maintain a normal heart rhythm in a large proportion of patients.
Success rates
Around 50–80% of patients remain free from AF after a single procedure, with higher success rates when repeat procedures are done.
Reduced dependence on medications
Many patients are able to reduce or stop long-term anti-arrhythmic drugs under medical guidance.
Advancements
Newer technologies offer similar effectiveness with potential safety and efficiency advantages.