Quick answer. Mitral valve prolapse is a common and usually harmless variation in how one of the heart’s valves closes. Most people have no symptoms and need only occasional monitoring, though a small number experience palpitations or, rarely, develop a leaky valve that needs treatment.
Mitral valve prolapse is a very common heart valve variation in which the flaps of the mitral valve bulge slightly backward as the heart squeezes. For the great majority of people it is entirely benign – it causes no symptoms, does not shorten life, and is often picked up by chance when a doctor hears a click or murmur or does a scan for another reason. It is one of the most reassuring findings in cardiology.
In Singapore, mitral valve prolapse is frequently diagnosed in healthy young adults during routine checks. While the word “prolapse” can sound alarming, most people simply need to know they have it and have an occasional review. A small minority develop palpitations or a leaking valve over time, which is why this guide explains both the reassuring picture and the few signs that mean you should see a cardiologist.
At a glance
| Situation | What it means | Typical approach |
|---|---|---|
| No symptoms, no leak | The common, benign picture | Reassurance; periodic review only if advised |
| Palpitations or chest flutter | Often harmless awareness of heartbeat | Lifestyle measures; heart-rhythm check if frequent |
| Mild valve leak (regurgitation) | Small amount of backward blood flow | Monitoring with periodic echocardiogram |
| Moderate to severe leak | More significant backward flow | Closer follow-up; valve repair if it progresses |
| Breathlessness or fainting | Possible significant valve or rhythm issue | See a cardiologist for assessment |
What is mitral valve prolapse?
The mitral valve sits between the upper and lower chambers on the left side of the heart and acts like a one-way door, keeping blood flowing in the right direction. In mitral valve prolapse, the valve flaps are a little floppy and bulge backward slightly as the heart contracts. This may produce a characteristic clicking sound and, sometimes, a soft murmur if a little blood leaks backward.
It is one of the most common heart valve conditions and, importantly, is benign in most people. Many live a completely normal life and never have any problem from it. It is often discovered incidentally during a routine examination or scan. The key message is reassurance: for the majority, mitral valve prolapse needs nothing more than the knowledge that it is there and, at most, occasional monitoring.
Symptoms & signs
Most people with mitral valve prolapse have no symptoms at all and feel completely well. When symptoms do occur, they are usually mild and may include:
- Palpitations – an awareness of your heartbeat, skipped beats or a brief flutter
- Mild chest discomfort that is not the crushing pain of a heart attack
- Feeling tired or low on energy
- Occasional light-headedness
- Breathlessness, usually only if a significant valve leak has developed
These symptoms are often intermittent and, on their own, not dangerous. It is the pattern over time, and whether a valve leak develops, that matters more than the occasional flutter.
Causes & risk factors
Mitral valve prolapse usually arises because the valve tissue is slightly more flexible or stretchy than average. Contributing factors include:
- Connective-tissue make-up – the valve tissue is naturally a little floppy
- Family history – it can run in families
- Certain inherited connective-tissue conditions – such as Marfan syndrome, though these are uncommon
For most people there is no identifiable disease behind it – it is simply a normal variation in valve structure. It is not caused by lifestyle, diet or stress, although caffeine, alcohol and anxiety can make any palpitations more noticeable.
How it's diagnosed
Mitral valve prolapse is often first suspected when a doctor hears a click or murmur with a stethoscope. The main confirming test is:
- Echocardiogram – an ultrasound of the heart that shows the valve flaps bulging and measures whether any blood is leaking backward (regurgitation). This is the key test and is painless
Depending on symptoms, the doctor may also arrange:
- ECG – a recording of the heart’s electrical activity
- Holter or rhythm monitor – a wearable monitor over a day or more if palpitations need investigating
If the valve is normal or only mildly leaky, follow-up is usually simple and infrequent.
Treatment options
For most people, the “treatment” for mitral valve prolapse is reassurance and, at most, occasional monitoring – no medication or procedure is needed. The approach is matched to the situation:
- No symptoms, no significant leak – no treatment; just be aware of it, with review only if your doctor advises
- Bothersome palpitations – cutting back on caffeine, alcohol and managing stress often helps; medication is occasionally used if palpitations are frequent
- Mild valve leak – periodic echocardiograms to keep an eye on it
- Significant valve leak – if regurgitation becomes moderate or severe over time, a cardiologist may recommend valve repair (or, less often, replacement)
The overall message is reassuring: progression to needing surgery is uncommon, and when it is needed, modern valve repair is very effective. This guide does not quote prices, as treatment varies by individual.
When to see a doctor & which specialist
Mitral valve prolapse is usually benign, but you should see a cardiologist for assessment if you develop:
- New or worsening breathlessness, especially on exertion or lying flat
- Fainting or near-fainting episodes
- Frequent or severe palpitations
- Increasing tiredness with reduced exercise tolerance
Seek emergency care – call 995 or go to A&E – if you have severe, crushing or persistent chest pain, sudden severe breathlessness, or you faint and do not quickly recover. These are not typical of simple prolapse and need urgent assessment to rule out a heart attack or a serious rhythm problem.
For routine confirmation, monitoring or any concerning symptoms, the right specialist is a cardiologist (heart specialist). You can find one through our directory of cardiologists in Singapore. For most people, though, the visit ends with reassurance.
Related guides
- Best Cardiology Clinics in Singapore — our editorial shortlist
- cardiology clinics directory
- Keratoconus
- Ptosis (droopy eyelid)
- Sarcoidosis
- Pulmonary fibrosis
- Essential tremor
Sources
- NHS – Heart valve problems
- Mayo Clinic – Mitral valve prolapse
- Singapore Heart Foundation
- HealthHub Singapore – Heart health
Part of our Heart & vascular guides · Browse all health topics