Question

Kamala has a heart rate of 60 beats/minute and a stroke volume of 80 ml/beat. What is her cardiac output?

Shreya has a dead space volume of 150 ml, a tidal volume of 500 ml, and a respiratory rate of 15 breaths per minute. What is her alveolar ventilation rate?

Lydia has a systolic blood pressure of 121 mm Hg and a diastolic blood pressure of 79 mm Hg. What is her mean arterial pressure?

Answer 1

Answer

1) For Kamala,

Cardiac output = Stroke volume x Heart rate

CO = 80 x 60

CO = 4800

Cardiac output of Kamala is 4800 ml / minute.

2) For Shreya,

Alveolar ventilation rate = (Tidal volume - Dead space ) Respiratory rate

Alveolar ventilation rate = (500 -150) 15

AVR = 350 x 15

AVR = 5250

The Alveolar ventilation rate of shreya is 5250 ml / minute.

3) For Lydia,

Mean arterial pressure = [2 (diatolic blood pressure) + Systolic blood pressure] / 3

MAP = [2 x (79) + 121] / 3

MAP = [158 + 121 ] / 3

MAP = 279 / 3

MAP = 93

The mean arterial pressure of Lydia is 93 mm Hg.