What has the greatest influence on preload?
A) Blood pressure
B) Contractility
C) Fluid volume
D) Heart rate

Question

Quizplus · Accepted Answer

Preload is equivalent to venous blood return to the atria and end diastolic volumes of the heart.This is directly influenced by fluid volume.Heart rate and contractility have some influence,but they are not the major determinants of preload.Blood pressure is not a direct influence on preload.

What Has the Greatest Influence on Preload