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Cook Children's Heart Center
Cook Children's Heart Center - Because childhood should be simple

Heart MurmursCook Children's


Lub-dub, lub-dub, lub-dub ... that's the sound the heart makes when it's beating. But sometimes there is an extra sound, a whooshing between beats. This is a murmur. Murmurs are usually discovered when your pediatrician is listening to your child's heart during a routine exam.

Heart SoundsThe sound "lub" occurs when atrioventricular valves close. The sound "dub" occurs when semilunar valves close.

When your pediatrician tells you that your child has a heart murmur, it can sound like a very scary diagnosis. The truth is, most children experience a heart murmur at some point in their lives, and most of the time they are not related to anything serious and have no effect on your child’s health or quality of life.

You know the sound of your heartbeat: lub-dub, lub-dub. In some people, there's an extra noise that the blood makes as it flows through the heart. It sounds sort of like the noise of water flowing through a hose. This sound is called a murmur.

Most murmurs don't mean anything is wrong. But sometimes they are a sign of a problem with the heart.


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If your child has been diagnosed, you probably have lots of questions. We can help. For resources, education or more information on support, click here. If you would like to schedule an appointment, refer a patient or speak to our staff, please call our offices at 682-885-2140.

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