6 terms

Frank Starling Law and Preload

Frank Starling Law
The greater the stretch of the cardiac muscle cell, the greater the force of contraction.
Frank Starling Law is aka as Length-tension relationship
Where length refers to the stretch of the myocardial cell and tension refers to contraction
length to which a myocardial cell is stretched and measured clinically as pulm. wedge press, central venous press, ventricular end-diastolic press or ventricular end-diastolic volume
As preload increases cardiac performace (eg; SV, CO) will increase ______
a certain physiologic limit
What increases the preload?
Atrioventricular valve regurg, semilunar valve regurg, and congential heart defect shunts (ASD,VSD, PDA)
Increase in preload is associated with
Chamber dilatation