Lecture 17 - Blood Pressure

Question 1

Hypertension causing remodelling?

Answer 1

increased wall tension, release of Angiotensin II etc., thicker stiffer wall, smaller lumen

Question 2

Co-morbidities of hypertension?

Answer 2

increased after load increases work of heart leading to failure; accelerated artherosclerosis leading to MI and ischemia; weakened vessel walls leading to haemmorhage stroke and retinopathy

Question 3

Short term control of blood pressure?

Answer 3

cardiac and neurological properties

Question 4

Long term control of blood pressure?

Answer 4

renal fluid volume control

Question 5

Factors affecting systolic pressure?

Answer 5

aortic compliance, stroke volume

Question 6

Factors affecting diastolic pressure?

Answer 6

aortic compliance, heart rate, total peripheral compliance

Question 7

Flow during diastole

Answer 7

possible due to compliance of blood vessels (holding in aorta)

Question 8

Stroke volume determined by?

Answer 8

preload, afterload, chronotropy, ionotropy

Question 9

Systolic pressure duing exercise?

Answer 9

increased due to increased preload from vasoconstriction and increases ionotropy