EXSS Lec 1,2,3 Flashcards
What is considered high BP
Systolic> 140mm
Diastolic >90mmHg
What is systolic and diastolic BP and how to calculated MAP
S: pressure generated during ventricular contraction (highest pressure during cardiac cycle)
D: pressure in arteries during ventricular relaxation
MAP: (2 x DBP + SBP)/3
What is considered high risk for BMI via waist circumference and waist:hip ratio
Waist circum: M>102 cm, W>88cm
Waist:hip: M> 0.9, W> 0.85
How to calculate BMI and HR max
BMI: weight/ height
HR max: 220-age
what age are men and women more at risk for exercise
M> 45 yrs
W> 55 yrs
What risk does smoking give
Myocardial infection due to inflammed blood vessels, and leading to atherosclerosis & plaque
- more likely to rupture
Why is there higher risk of CVD with higher BP
there is an increased pressure on the arterial walls leading to higher risk of vascular rupture (stroke)
What is myocardial infection
Reduces blood flow due to myocardium blocking coronary arteries, where oxygen supply is lower but demand is higher
- caused by atherosclerosis or blocking from somewhere else
Risk factors associated with CVD or inc MI:
Age, smoking, family history, hypertension, dyslipidaemia , obesity
Groups at risk for SCD or MI are:
Diabetic, dizziness after/before PI, sedentary behaviour, asthmatic
How does systolic pressure appear
Brachial artery is opened and blood is pushed through when the cuff pressure decreases and artery cannot be kept closed
How does diastolic pressure occur
cuff pressure decreases below the pressure in the brachial artery and remains open- there is nonturbulent flow
Formula for:
Work
work rate
velocity in ms from RPM
power
W (J)= F x s
Work rate (watts)= W/t
V= RPM x 1min/60s x 6m/1rev
Power= Force x velocity
