Can A Heart Murmur Cause Heart Palpitations? | What It Means

A heart murmur and heart palpitations can show up in the same person, but they are not the same thing. A murmur is a sound a clinician hears through a stethoscope. Palpitations are a feeling you notice yourself, such as fluttering, pounding, racing, or skipped beats.

That difference matters. A murmur may be harmless and silent. Palpitations may come from stress, caffeine, dehydration, an irregular rhythm, or a valve problem that also creates a murmur. So yes, the two can be linked, but the murmur is not always the direct cause.

If you’ve been told you have a murmur and you also feel odd beats, the real question is this: what is causing both? Once you pin that down, the next step gets much clearer.

What A Heart Murmur And Palpitations Each Mean

A heart murmur is an extra “whooshing” sound made as blood moves through the heart. Some murmurs are innocent. They can happen in children, during pregnancy, with fever, or when blood is moving faster than usual. These murmurs do not mean the heart is damaged.

Other murmurs point to a structural issue, most often a heart valve that is narrowed or leaky. The American Heart Association’s heart murmur page notes that some murmurs are harmless, while others can signal valve disease that needs follow-up.

Palpitations are different. They are sensations, not sounds. People describe them as:

• a flip in the chest
• a pounding beat
• a fast run of beats
• a brief pause, then a hard thump
• fluttering in the chest, throat, or neck

You can have palpitations with a normal heart. You can also have them with an arrhythmia, thyroid trouble, anemia, low blood sugar, or a valve issue. That’s why a murmur plus palpitations deserves a bit more than guesswork.

Can A Heart Murmur Cause Heart Palpitations? When They Happen Together

The plain answer is yes, sometimes. The link shows up most often when the murmur comes from a valve problem that changes how blood moves through the heart. A leaking or narrowed valve can stretch part of the heart over time, which can stir up rhythm trouble and make palpitations more noticeable.

Still, not every murmur leads to palpitations. An innocent murmur usually does not. Many people with an innocent murmur feel fine and never need treatment.

Here are the main ways the two may connect:

• Valve disease: Mitral valve prolapse, aortic stenosis, or valve leakage can create a murmur and raise the odds of rhythm symptoms.
• Faster blood flow: Fever, anemia, pregnancy, or an overactive thyroid can create a flow murmur and also make the heart race.
• Heart chamber strain: If a valve problem makes the heart work harder, extra or irregular beats may follow.
• Shared trigger: Some people feel palpitations during anxiety, exercise, illness, or dehydration, and a murmur is found during the same checkup even though the two are not tightly linked.

The NHS guidance on heart palpitations says many palpitations are harmless, though repeated episodes or symptoms with breathlessness, chest pain, dizziness, or fainting need medical review.

Signs That Point To A Harmless Murmur Vs A Murmur That Needs A Closer Check

A murmur by itself does not tell the full story. The rest of the picture matters more than the sound alone. Age, symptoms, medical history, and exam findings all shape what comes next.

Doctors tend to worry less when the murmur has the pattern of an innocent flow murmur and the person has no other symptoms. They pay closer attention when the murmur appears later in life, sounds stronger, or comes with chest symptoms, fainting, swollen ankles, reduced exercise tolerance, or palpitations that keep coming back.

What Doctors Usually Check When You Have A Murmur And Palpitations

If both symptoms are in the mix, the workup usually tries to answer two questions: Is the murmur innocent or structural? Are the palpitations from a rhythm problem or from something else pushing the heart harder?

The first step is a good history. A clinician will ask what the palpitations feel like, how long they last, what sets them off, and whether you get chest pain, dizziness, or blackouts. They’ll also listen to the murmur, check your pulse, and review family history and medicines.

Tests may include:

• ECG: checks the heart’s electrical pattern at that moment
• Heart monitor: catches rhythm changes over a day or longer
• Echocardiogram: ultrasound that shows valves, chambers, and blood flow
• Blood tests: may check anemia, thyroid issues, infection, or other triggers

The NHLBI page on heart valve disease diagnosis notes that echocardiography is central when a doctor needs to sort out the cause of a murmur.

An echo is often the test that clears up the mystery. It can show whether the murmur comes from normal flow, a leaking valve, a narrowed valve, or another structural issue. If the echo is normal, that usually shifts attention toward common palpitation triggers rather than valve disease.

When Palpitations With A Murmur Need Faster Medical Attention

Most palpitations are not a 999 event, yet some are. You need urgent care if palpitations come with chest pain, severe shortness of breath, fainting, or a near-fainting spell. The same goes for a pounding, racing rhythm that will not settle.

Seek a prompt appointment soon if:

• the episodes are getting more frequent
• they last longer than they used to
• you already know you have valve disease
• you get palpitations during exercise
• there is a family history of sudden cardiac death or rhythm disease

That does not mean something serious is certain. It means the pattern deserves a proper check instead of a shrug.

What You Can Do While Waiting To Be Checked

Start with a simple symptom log. Write down when the palpitations happen, how long they last, what you were doing, and whether you had caffeine, alcohol, poor sleep, illness, or stress that day. That record can save time during your visit.

It also helps to check whether you have other clues nearby, such as shortness of breath on stairs, ankle swelling, chest pressure, or a drop in stamina. Those details help sort out a harmless blip from something tied to the heart’s structure or rhythm.

While you wait for review, it makes sense to:

• cut back on caffeine if it seems to trigger episodes
• stay well hydrated
• limit heavy alcohol use
• review over-the-counter cold products and stimulant drinks
• avoid hard exercise if palpitations start during activity until you’ve been checked

The Takeaway

A heart murmur can be linked with heart palpitations, though the murmur itself is often only part of the story. Innocent murmurs usually do not cause symptoms. Murmurs tied to valve disease, faster blood flow, or strain on the heart are the ones more often seen with palpitations.

If you have both, the smartest next move is not to guess. A clinician can tell whether the murmur is harmless, whether the palpitations point to an arrhythmia, and whether an echocardiogram or heart monitor is needed. That way, you get an answer based on the cause, not just the sound or the sensation.

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