TBL 7 Flashcards
Cardiac out put (CO)– normal for a normal 70kg man
normal stoke voulme in healthy 70 kg man:
ejection fracture
normal ejection fracture
EDV
ESV
normal amounts in healthy
120-50=70 which is stroke volume
effects of increased pre-load in the heart
effects of afterlaod in the heart
Mean arterial pressure formula:
Increased arterial vasodilation and decreased blood viscosity→
in SV, CO, MAP, TPR
Mean arterial pressure (MAP)= CO (cardiac output) x TPR (Total peripheral vascular resistance)
- Increased arterial vasodilation and decreased blood viscosity→ Decreased TPR, decreased mean arterial pressure (MAP), increased SV, and increased CO (and vice versa by increased arterial vasoconstriction, increased blood viscosity, and advanced atherosclerosis, etc)
what is Mean systemic (mean circulatory) filling pressure (MSFP)? how it is measured
why is Mean systemic (mean circulatory) filling pressure (MSFP) important ?
MSFP (Mean systemic filling pressure ) is affected by:
Factors affecting the venous return (VR):
how does standing position, skeletal muscular pump and respiratory pump help the venous return?
Factors affecting the cardiac output (CO) includes:
a) Frank-Starling law, how?
Frank-Starling law (Frank-Starling mechanism) of heart
stroke volume and EDV relationship
how does inc heart rate, Venous return, sympathetic NS, blood volume, inc in MAP, EDV, INC in TPR, and decrease vescosity of blood with vasodilation affect cardiac out put
relationship between atrial pressure and venous return
blood volume effect venous return and atrial pressure
increased and decreased arteriolar affect the venous return and atrial pressure
how does the sympathetic nervous system affect the cardiac output
how does right atrial pressure affect the cardiac output curve?
operating point of the heart
