Calculate the aveolar ventilation based on the following information: Tidal volume 500 mls anatomical dead air space 100 mls, residual volume 1,200 mls, respiration rate 20 breaths per minute.
To calculate the alveolar ventilation, we need to subtract the dead space volume from the tidal volume and then multiply by the respiratory rate.
Tidal volume - Dead space volume = Alveolar ventilation
500 mL - 100 mL = 400 mL
Alveolar ventilation = 400 mL * 20 breaths/minute = 8,000 mL/minute
Therefore, the alveolar ventilation is 8,000 mL/minute.
To calculate the alveolar ventilation, you need to know the formula:
Alveolar ventilation = (tidal volume - dead space) x respiratory rate
Given:
Tidal volume = 500 mL
Anatomical dead space = 100 mL
Residual volume = 1,200 mL
Respiration rate = 20 breaths per minute
First, we need to calculate the total dead space volume:
Total dead space = anatomical dead space + physiological dead space
Since the anatomical dead space is given as 100 mL, we only need to consider the physiological dead space, which is assumed to be zero in a healthy individual.
Total dead space = anatomical dead space + physiological dead space
= 100 mL + 0 mL
= 100 mL
Next, we can calculate the alveolar ventilation:
Alveolar ventilation = (tidal volume - dead space) x respiratory rate
= (500 mL - 100 mL) x 20 breaths per minute
= 400 mL x 20 breaths per minute
= 8,000 mL per minute
Therefore, the alveolar ventilation is 8,000 mL per minute.