Harvard Heart Letter
What is diastolic dysfunction?
Ask the doctor [IMGCAP(1)] Q. I had an echocardiogram and the report says I have mild diastolic dysfunction. What does that mean? A. Diastolic dysfunction means that your heart is having trouble relaxing between beats. Every heartbeat has two distinct phases: when the heart contracts and pushes blood out to the body (the systolic phase) and when the heart relaxes and refills with blood (the diastolic phase).