Arteriosclerosis decreases the elasticity of arterial walls and increases arteri

Question

Arteriosclerosis decreases the elasticity of arterial walls and increases arterial resistance to blood flow. Suppose there are two patients.

15. Aortic valve opens 16. Second heart sound occur 17. Arteriosclerosis decreases the elasticity of arterial walls and increases arterial resistance to blood flow. Suppose there are t One has a resting blood pressure of 115/70. The other has a resting blood pressure of 140/100. a. Calculate the pulse pressure and MAP of each individual b. Which patient do you think has arteriosclerosis? Explain c. For the person w ith arteriosclerosis, how must the pulse pressure change to maintain normal blood flow?

Explanation / Answer

(15.) Aortic valves opens when pressure increases in left ventricle and opening of aortic valves allow the entry of blood into aorta from left ventricle.

(16.)Heart beat sound is composed of two sounds lub-dub. 2nd heart sound dub is produced by the closure of aortic and pulmonic valves.

(17.) a. Pulse pressure and MAPs

Pulse pressure =SBP-DBP MAP=1/3(pulse pressure)+DBP

Patient A Pulse pressure =115-70=45 MAPs 45/3+70=85

Patient B Pulse pressure=140-100=40 MAP=40/3+100=113.33

(b.)Patient with 140/100 resting blood pressure may be suffering arteriosclerosis because arteriosclerosis causes thickening of walls of artery and causes difficult to travel blood from artery.

(c. ) normal pulse pressure for healthy person is 40 where SBP is 120 and DBP is 80 bit for arteriosclerosis patient blood pressure and pulse pressire should be higher for proper blood flow.

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