Ask the doctor: What is diastolic dysfunction?

Published: February, 2010

Q. My last echocardiogram showed mild diastolic dysfunction. What does that mean?

A. Diastolic dysfunction means that your heart is having trouble relaxing between beats. This limits the amount of blood the ventricles can collect for the next heartbeat. Since each contraction pumps less blood, the heart works harder to make up the shortfall.

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