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Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Mitral valve regurgitation

Mitral valve regurgitation (MR) is the leaking or backflow of blood through the valve between the upper left heart chamber (atrium) and the lower left heart chamber (ventricle). If serious, this condition can lead to a backup of blood in the left atrium and the lungs, cause enlargement of and damage to the left ventricle, and lead to heart failure.

Main Street Pediatrics now offers the latest Pfizer COVID-19 vaccine and the flu vaccine, recommended by the CDC and the American Academy of Pediatrics for ages 6 months and above. Please call our office to schedule a COVID-19 vaccine visit for your child. For more details read our recent blog post.