Week 9: Cardiovascular prac results Flashcards
What was the mean for the blood pressure prac age like?
Asymmetrical, skewed towards younger ages
What was the distribution for height?
Normal distribution
What is the relationship between weight and BP?
Weight isn’t only determinant but association exists
What happens to blood pressure after standing for 2 minutes?
Drop of systolic, rise in diastolic
What happens to MAP and PP on standing?
MAP rises slightly, PP drops by about 10mmHg
What is the arterial pulse wave like for supine and standing?
Similar amplitude (mean pressure increased slightly)
Why does pulse pressure fall on standing?
Reduced venous return (gravity, blood polling in legs)
What is pulse pressure affected by?(4)
Compliance of large arteries, stroke volume, reflected waves, pooling of blood in lower limbs
What happens with reflected waves and aging?
Arteries stiffen, velocity of blood increases (unidirecitonally and reflected)
What happens immediately when going from supine to standing?
CO down, PP down
SNS activated, PSNS lessened
How is MAP maintained when going from supine to standing?
TPR maintains MAP (increases)
What was the effect of standing pre-treatment ? (SBP, DBP, MAP, HR, SV, CO, TPR)
SBP: Decrease DBP: Increase MAP: Same HR: Increases CO (SV): Decreases TPR: Increases
What happened to the parameters after treatment when standing?
Same as pre treatment
What does caffeine do?
Increases BP mainly through TPR
What does nicotine do?
No effect on BP, no decrease in supine HR with time
