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Mumbai London AF Clinic

Conditions we treat

Your heart, explained in plain language.

Put your heart in the most experienced hands. These are general guides, not a diagnosis.

Condition

Atrial fibrillation (AF)

What it can feel like

  • An irregular, often fast heartbeat
  • Some people feel nothing at all
  • Tiredness, breathlessness, or anxiety

What is happening

The upper chambers of your heart, the atria, beat in a disorganised way instead of a steady rhythm. Blood does not move through as smoothly, which is why AF raises stroke risk if left unmanaged.

How Professor Gupta can help

Professor Gupta has treated atrial fibrillation for more than thirty years and performs over 300 ablation procedures a year. At your consultation he will explain what is happening in your heart, whether a procedure is right for you, and which technology suits your situation, in plain language.

Normal rhythmAF

Normal rhythmAtrial flutter

Condition

Atrial flutter

What it can feel like

  • A fast but usually very regular heartbeat, often 130-150 beats per minute
  • A fluttering, pounding, or racing sensation in the chest
  • Breathlessness, tiredness, or lightheadedness, especially on exertion

What is happening

In atrial flutter, the upper chambers of your heart do not beat chaotically as they do in AF. Instead, one electrical signal races round a fixed circuit, usually in the right atrium, in a fast, regular loop. This is why the pulse in atrial flutter often feels very steady, just very fast. Like AF, it can allow blood to pool and clot in the heart, so it carries a similar stroke risk and is assessed the same careful way.

How Professor Gupta can help

Because the electrical circuit follows a predictable, mappable path, atrial flutter often responds very well to catheter ablation, a small procedure that interrupts the loop at one precise point. Professor Gupta will confirm the diagnosis with an ECG, explain how likely ablation is to work for your specific type of flutter, and discuss whether blood-thinning treatment is also needed.

Condition

Supraventricular tachycardia (SVT)

What it can feel like

  • Sudden episodes of a very fast heartbeat, sometimes over 150 beats per minute
  • A racing heart that starts and stops abruptly, sometimes without warning
  • Chest discomfort, breathlessness, or lightheadedness while an episode lasts

What is happening

SVT is a general term for fast rhythms that start above the heart’s main pumping chambers. Most often, it is caused by an extra electrical pathway, present since birth, that lets signals loop back on themselves and briefly take over the heartbeat. Episodes tend to begin and end suddenly, lasting anywhere from seconds to hours, and can happen at any age.

How Professor Gupta can help

Most types of SVT can be located precisely with a heart rhythm test called an electrophysiology study, and treated in the same sitting with catheter ablation, often ending the problem for good. Professor Gupta will explain which type of SVT you have, how likely ablation is to succeed for it, and what the day of the procedure involves.

Normal rhythmSVT

Normal rhythmPalpitations

Symptom guide

Palpitations & unexplained heart racing

A symptom, not a single diagnosis. Many possible causes.

What it can feel like

  • A sudden awareness of your own heartbeat, fluttering, pounding, or thumping
  • A sense that your heart has skipped a beat or added an extra one
  • Racing that appears with no obvious trigger, or lingers after exercise or stress has passed

What is happening

Palpitations describe a noticeable heartbeat, they are a symptom, not a diagnosis in themselves. Often the cause is entirely harmless, caffeine, alcohol, anxiety, or hormonal changes can all bring them on. Sometimes, though, they are the first sign of an underlying rhythm problem such as AF, atrial flutter, SVT, or extra "ectopic" beats. Working out which it is starts with recording what your heart is actually doing while you feel the symptom.

How Professor Gupta can help

Professor Gupta will take a careful history, then usually arrange an ECG and a period of heart rhythm monitoring, sometimes a few days, sometimes longer, to capture an episode as it happens. Once there is a clear diagnosis, he will explain in plain language exactly what is going on and which treatment, if any, fits your situation.

Symptom guide

Unexplained blackouts & dizziness

A symptom, not a single diagnosis. Many possible causes.

What it can feel like

  • Sudden loss of consciousness (syncope), with or without any warning
  • Lightheadedness, dizziness, or a feeling that the room is spinning
  • A near-blackout that passes after a few seconds, sometimes with pale skin or sweating

What is happening

A blackout happens when blood flow to the brain briefly falls, often because the heart beats too slowly, pauses, or occasionally too fast, to keep up with demand. Not every blackout is heart-related, simple faints and low blood pressure are common and usually harmless, but some are caused by significant rhythm problems that carry a real risk if they go unrecognised, which is why unexplained blackouts deserve a proper cardiac assessment.

How Professor Gupta can help

Professor Gupta will look for a rhythm problem around the time your blackouts happen, using ECG monitoring and, where needed, a small implantable loop recorder that watches your heart continuously for months at a time. If a cause such as bradycardia or heart block is found, he will explain clearly whether a pacemaker or another treatment is the right next step.

Normal rhythmPause

Normal rhythmBradycardia

Condition

Bradycardia (slow heart rhythms)

What it can feel like

  • A resting heart rate that stays persistently below 60 beats per minute
  • Tiredness, breathlessness, or a reduced ability to exercise
  • Dizziness, lightheadedness, or blackouts if the rhythm slows further

What is happening

Bradycardia means the heart’s natural pacemaker, or the electrical wiring that carries its signal onward, is firing too slowly or being partly blocked along the way. A slow heart rate is completely normal in fit, healthy people and during sleep, but a persistently slow or pausing rhythm can mean the heart is no longer pumping enough blood to meet the body’s needs.

How Professor Gupta can help

Professor Gupta will establish whether your slow rhythm is a normal variant or something that needs treatment, usually with an ECG and a period of heart rate monitoring. Where a pacemaker is the right answer, he will explain in plain language how it works, what the procedure to fit one involves, and what daily life with one is like afterwards.

Procedure

Left atrial appendage occlusion (LAAO)

A specialist procedure. Rarely available in India.

India's first combined PFA and LAAO, 14 August 2026

What it can feel like

  • You have atrial fibrillation and have been told you need blood-thinning tablets long term
  • You cannot take anticoagulants, or you have bled while taking them
  • You want a way to lower stroke risk that does not depend on taking a tablet every day

What is happening

The left atrial appendage is a small pouch on the upper left chamber of the heart. In AF, blood can pool there and form clots that may travel to the brain. Left atrial appendage occlusion, LAAO, closes that pouch with a small implanted device, most often an Amulet or a Watchman, so clots cannot leave it. The procedure is done through a thin tube from a vein in the leg, without opening the chest. It can be combined with AF ablation in the same sitting when that is the right plan.

How Professor Gupta can help

Professor Gupta offers LAAO with both Amulet and Watchman devices, and can combine occlusion with AF ablation when both are needed. Combined AF ablation with LAAO is still rarely available in India. He is one of the only consultants in the country who can confirm that the procedure is appropriate for you and perform it, and he has published specifically on doing both in the same sitting. At your consultation he will explain whether closing the appendage, continuing blood-thinning, or both, fits your situation, in plain language.

Normal rhythmAF

Case report · 14 August 2026 · Lilavati Hospital, Mumbai

First in India, in practice.

The patient, the procedure, and the press coverage, in one place.

14 August 2026 · Lilavati Hospital, Mumbai

India's first combined pulsed field ablation and left atrial appendage occlusion.

A 77-year-old man from Juhu had lived for years with heart failure after bypass surgery, and then with recurrent atrial fibrillation. AF raised his risk of a stroke, but every attempt at blood thinners ended in serious bleeding from stomach ulcers, sometimes needing transfusions. Stop the tablets and risk a stroke. Continue them and risk a bleed.

On 14 August Professor Gupta and the Lilavati team answered both problems in one sitting. Pulsed field ablation treated the rhythm. Left atrial appendage occlusion sealed the pouch where the clots behind AF strokes form, so he no longer depends on blood thinners. Start to finish, the procedure took an hour and a half. At his review two weeks later the device was well seated and his heart was in normal rhythm.

The hospital reported it as the first time the two procedures had been combined in India. The Indian Express, Sakal and the ANI wire carried the story.

Our objective was to address both the issues in a single procedure. During the procedure, we eliminated the primary source of clot formation with LAAO and treated the abnormal heart rhythm with PFA.

Professor Dhiraj Guptaquoted by ANI, 1 September 2026

Simple activities became a source of everyday worry. Since undergoing the procedure, he has regained his confidence to get back to his routine and enjoy life without the same constant fear. It has given him and all of us a new sense of hope.

Kaushal Shahthe patient's son, in the hospital's statement
FIRST IN INDIA · FIRST IN INDIA · FIRST IN INDIA ·

77

years old

90

minutes, start to finish

2

weeks to a normal-rhythm review

PULSED FIELD ABLATIONTreats the rhythmAPPENDAGE OCCLUSIONSeals the clot sourceONE PROCEDURE · 1 h 30 min

Reported by 10 outlets

  • The Indian Express

    At 77, he couldn't take blood thinners: How docs treated his heart in a rare procedure

    Read ↗
  • SakalIn Marathi

    AF रुग्णांसाठी मोठी आशा! PFA आणि LAAOची भारतातील पहिली संयुक्त प्रक्रिया यशस्वी

    Read ↗
  • ANI

    India's first combined pulsed field ablation and LAAO procedure successfully treats 77-year-old AF patient at Lilavati Hospital and Research Centre

    Read ↗
All press coverage →
Normal rhythmPause

Procedure

Cardioneuroablation for syncope and dysautonomias

A specialist procedure. Rarely available in India.

What it can feel like

  • Fainting or near-fainting, sometimes with little or no warning
  • A slow or pausing heartbeat around the time you pass out
  • Dizziness, palpitations, or a drop in blood pressure with standing, heat, or after eating

What is happening

Some faints happen because the nerves that slow the heart overreact, causing a sudden pause or a sharp drop in blood pressure. Dysautonomias are a related group of problems in that same automatic control of heart rate and blood pressure. Cardioneuroablation is a catheter procedure that carefully interrupts selected nerve fibres on the outside of the heart, so the heart is less likely to pause or slow to the point of fainting.

How Professor Gupta can help

Cardioneuroablation is still a specialised procedure, and few operators in India currently offer it. Professor Gupta is one of the only consultants in the country who can confirm whether it is right for your syncope or dysautonomia, and perform it. He has published specifically on this procedure, including practical guidance on treating syncope and nerve-driven heart block. He will first establish that the problem is driven by the heart’s nerve supply, then explain in plain language what the day of the procedure involves and what to expect afterwards.

Every heart is different.

If something here sounds familiar, book a consultation. Professor Gupta will review your history and explain what is happening in plain language, in English, Hindi, or Punjabi.

Book a consultation

Information on this site is for general education and is not a substitute for individual medical advice. Always consult a doctor about your own condition.

Take the first step. It costs nothing to ask.

Send a short enquiry and the clinic team will come back to you, or reach us straight away on WhatsApp.

Or call +91 81695 23196 and email contact@mumbai-london-af.clinic.