Answer:
The minute ventilation rate = 7.7 Lpm
Step-by-step explanation:
a) The tidal volume = 550 ml
Respiratory rate = 14 times per minute
Since minute ventilation (VE) is the total volume of gas entering (or leaving) the lung per minute, it is equal to the tidal volume (TV) multiplied by the respiratory rate (f).
This implies that Minute Ventilation = VE = TV x f
= 550 * 14
= 7,700 ml/min.
Therefore, the minute ventilation rate = 7.7 Lpm (7,700/1,000) or 7.7 liters per minute.
b) The ventilation rate is also known as the inhalation rate or breathing rate. It is the amount of air inhaled in a specified time period. Note that at rest, a normal person moves approximately 450 ml/breath * 10 breath/min or 4500 ml/min (4.5 Lpm).