A male patient weighing 100 kg has a resting cardiac output of 8,000 ml/minute,

Question

A male patient weighing 100 kg has a resting cardiac output of 8,000 ml/minute, and arterial pressure of 85/50 mmHg. His pressure-volume diagram of the left ventricle is shown below.

1. What is the approximate stroke volume in this patient?

Select one:

a. 60 ml

b. 80 ml

c. 100 ml

d. 140 ml

2. What is the ejection fraction in this patient?

Select one:

a. 43%

b. 57%

c. 60 ml

d. 75%

e. 80 ml

3. What is the patients resting heart rate in beats per minute?

Select one:

a. 70

b. 80

c. 90

d. 100

4. What event occurs at point C in the patients pressure-volume relationship?

Select one:

a. Aortic valve opens

b. Aortic valve closes

c. Mitral valve opens

d. Mitral valve closes

5. When the mitral valve closes,

Select one:

a. Pressure inside the left ventricle starts to increase

b. Pressure inside the left ventricle starts to decrease

c. The stroke volume increases above normal

d. There is no pressure change in the left ventricle

Please show work. Points will go to correct answers, thank you.

A male patient weighing 100 kg has a resting cardiac output of 8,000 ml/minute, and arterial pressure of 85/50 mmHg. His pressure-volume diagram of the left ventricle is shown below. 1. What is the approximate stroke volume in this patient? Select one: a. 60 ml b. 80 ml c. 100 ml d. 140 ml 2. What is the ejection fraction in this patient? Select one: a. 43% b. 57% c. 60 ml d. 75% e. 80 ml 3. What is the patient½s resting heart rate in beats per minute? Select one: a. 70 b. 80 c. 90 d. 100 4. What event occurs at point C in the patient½s pressure-volume relationship? Select one: a. Aortic valve opens b. Aortic valve closes c. Mitral valve opens d. Mitral valve closes 5. When the mitral valve closes, Select one: a. Pressure inside the left ventricle starts to increase b. Pressure inside the left ventricle starts to decrease c. The stroke volume increases above normal d. There is no pressure change in the left ventricle Please show work. Points will go to correct answers, thank you.

Explanation / Answer

1. b. 80 ml

2. d. 75%

3. a. 70

4. c. Mitral valve opens

5. b. Pressure inside the left ventricle starts to decrease

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