What happens to the post-exercise venous pressure when ejection fraction increases?

When ejection fraction increases, the post-exercise venous pressure typically decreases. Ejection fraction refers to the percentage of blood that is pumped out of the heart's ventricles with each heartbeat. A higher ejection fraction indicates that the heart is effectively pumping a greater volume of blood with each contraction, which enhances blood flow throughout the body.

During exercise, the increased ejection fraction aids the movement of blood through the venous system back to the heart. As more blood is ejected efficiently, the veins experience less pressure because of the improved circulation dynamics. Consequently, the reduced pressure within the venous system post-exercise allows for better venous return to the heart and can reduce the load on the veins. This physiological response explains why post-exercise venous pressure decreases as ejection fraction increases.