Balloon Mitral Valvotomy (BMV)

Yes. PTMC (percutaneous transvenous mitral commissurotomy), BMV (balloon mitral valvotomy) and balloon mitral valvuloplasty all describe the same procedure — opening a narrowed mitral valve with a balloon passed through a vein. Different hospitals and different doctors simply favour different names.

No. It is done through a vein at the top of the leg under local anaesthetic with sedation, so you are drowsy and comfortable rather than fully asleep for most of it. The transoesophageal echo probe is placed once you are sedated. Afterwards there is a small puncture site at the groin — no chest wound and no stitches.

In a valve that was still pliable at the start, a good result commonly lasts ten to fifteen years and often longer. A valve that was already thickened, calcified or scarred beneath the leaflets does less well and for less time. Your own echo score is a better guide than any average, and we go through it with you before deciding.

Yes, and sometimes it is exactly the right thing to do. Pregnancy increases the volume of blood the heart must move, which is why severe mitral stenosis so often first declares itself then. When medicines are not enough, BMV can be performed with the abdomen shielded, ideally in the second trimester, and it removes the danger for both mother and baby. Tell us early if you are pregnant or planning to be — it changes the timing and the shielding, not your eligibility.

Because replacing it costs you something. A mechanical valve means warfarin for life, with regular blood tests and real bleeding risk; a tissue valve wears out and needs redoing, which matters enormously in a patient in their thirties. When the anatomy suits a balloon, BMV keeps your own valve and none of that follows. Where the anatomy does not suit it, replacement is the right answer and we say so plainly.

No medicine can widen a narrowed valve. Diuretics ease the fluid, rate-controlling tablets give the heart more time to fill, and blood thinners protect against clot if the rhythm is irregular — all of that treats the consequences of the narrowing. The narrowing itself is mechanical, and only a balloon or an operation changes it.

Because a narrowed mitral valve makes blood stagnate in the left atrium, and a clot can form in the small pouch off it. Standard echo from the chest cannot see that pouch reliably; the probe passed into the food pipe sits directly behind the heart and can. If there is a clot, the procedure waits — usually for several weeks of blood-thinning treatment and a repeat look. That single check is the main reason strokes during this procedure are rare.

Then we tell you before, not during. Heavy calcification, badly scarred cords beneath the valve, or a leak that is already more than mild all make a balloon the wrong choice — pushing on regardless mostly produces a torn leaflet and an urgent operation. In that situation surgery is the honest recommendation, and it is a well-proven one.

It depends on your rhythm, not on the balloon. If your heartbeat is regular, most patients need no long-term anticoagulation after BMV. If you have atrial fibrillation — common with a stretched left atrium — you will need it, and that continues whether or not the valve is opened. Opening the valve does not by itself restore a normal rhythm.

Age alone is not the barrier; the state of the valve is. Older patients more often have calcified leaflets and scarring beneath them, which is what makes a balloon less suitable — so the echo decides this, not the birth date. Where the anatomy is favourable, the procedure is as reasonable at seventy as at thirty.

Often, yes. Re-narrowing usually happens gradually over many years, and if the leaflets have stayed pliable a second balloon procedure is reasonable. Where the valve has become rigid or leaks, replacement becomes the better option. Nothing about a BMV closes that door.

If they were prescribed for rheumatic fever prophylaxis, yes — and this is the part patients most often stop. The balloon repairs damage already done; it does nothing about a fresh attack of rheumatic fever, which can damage the valve again. How long you continue depends on your age and the extent of the heart involvement, and we will tell you plainly which applies to you.