Question

Body Mass = 85.7 kg                                       ISF hydrostatic pressure = 1 mmHg

Hematocrit = 45%                                            ISF osmotic pressure = 0 mmHg

Blood pressure = 117/72 (mmHg)             Arteriole end of capillary hydrostatic pressure = 34 mmHg               

Ejection Fraction = 60%                                  Net Filtration Pressure (arteriole end) = 11 mmHg            

EDV = 140 ml                                                      Net Filtration Pressure (venule end) = -8 mmHg

Cardiac Output = 6.3 L/min                         

1. What is this person’s estimated blood volume?                                                                  ___________________
2. What is this person’s plasma volume?                                                                                    ___________________
3. What is this person’s mean arterial pressure?                                                                     ___________________
4. What is this person’s stroke volume?                                                                                      ___________________
5. What is this person’s end systolic volume?                                                                           ___________________
6. What is this person’s heart rate?                                                                                               ___________________
7. What is this person’s blood colloid osmotic pressure?                                                     ___________________
8. What is this person’s hydrostatic pressure on the venule end of the capillary?     ___________________
9. What would the venule end of the capillary absorption pressure become is a liver disease reduced the blood colloid osmotic pressure to 8 mmHg?______________________________
10. During inspiration the thoracic pressure __________________ which causes central venous pressure to _____________________.

Answer 1

1. Person's estimated blood volume = weight × age group

So, if the person is male adult then it would be 6428 mL       if the person is female adult then it would be 5688 mL

2. Person's plasma volume = (1-hematocrit) × [a + (b x weight in kg)] where adjustment factors were a = 1,530 in males and 864 in females, and b = 41 in males and 47.9 in females

So if the person is male then it would be ( 1-45) × [ 1530 + 41 × 85.7 ] = if the person is female then it would be ( 1- 45 ) × [ 864 + 47.9 × 85.7 ] =

3. Person's mean arterial pressure =  Systolic BP + 2 Diastolic BP / 3

So persons mean arterial pressure = 117 + 2×72 /3 = 117+144/3 = 261/3 =87 mmHg