What are symptoms of diastolic dysfunction?

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.

Some people with diastolic dysfunction have no symptoms. Others experience shortness of breath with mild activity, such as easy walking; difficulty breathing, especially when lying down; or swollen legs and feet.