Starling curve

Question 1

Force of contraction proportional to

Answer 1

End disastolic length of cardiac muscle fiber (preload)

Question 2

Increased contractility with

Answer 2

Sympathetic stimulation,
catecholamines,
digoxin

Question 3

Decreased contractility with

Answer 3

Loss of myocardium (MI)
beta blockers,
CCBs

Question 4

Ejection fraction

Answer 4

SV/EDV= (EDV-ESV)/EDV

Question 5

EF indicates

Answer 5

EF is an index of ventricular contractility

Question 6

EF is normally

Answer 6

Greater than 55%

lower EF in systolic HF, no change in diastolic HF