Question

QUESTION 1

A CLIENT HAS A BLOOD PRESSURE OF 120/80 mmHg. The AORTIC VALVE WILL OPEN AT WHICH OF THE FOLLOWING PRESSURES?

a.
120 mmHg

b.
80 mmHg

c.
80.001 mmHg

d.
120.001 mmHg

QUESTION 2

Using the following information, calculate the stroke volume .

EDV = 130 ml

ESV = 70 ml

a.
200 ml

b.
60 ml

c.
130 ml

d.
none of the above

10 points  

Using the following information, calculate the ejection fraction. The ejection fraction equals

EDV-120 ml

ESV = 60 ml

a.
10 %

b.
50%

c.
40%

d.
75%

Answer 1

1. a.120mm hg
during the contraction of tle left left venrticle, the aortic valve opens. the contraction phase of the ventricles is called systole, and hence at the systolic pressue the aortic valve opens.

2. stroke volume is defines as the volume of blood pumped from the left ventricle per beat. it is calculated by substracting the end systolic volume from end diastolic volume.
given (ESV)= 70 and (EDV)= 130
stroke volume = EDV - ESV = 60 ml

3. ejection fraction means the fraction of blood ejected from the ventricle per each heart beat. it is calculated by dividing stroke volume by end diastolic volume.
given ESV= 60ml and EDV= 120ml
stroke volume(SV) = 120 - 60 = 60 ml
ejection fraction = 60/120 *100
EF = 50%