Consider this diver with a 50 foot long snorkel (as in the picture). This snorke
ID: 3513610 • Letter: C
Question
Consider this diver with a 50 foot long snorkel (as in the picture). This snorkel holds a volume of 1000 mL 50 ft The tidal volume of this person is 500 mL. and their breath frequency is 20 breaths a minute. Assume the diver's conducting airway hold 150 mL volume. What is the calculated alveolar ventilation? Selected Answer: 6000 ml/min 6000 mV/min 4200 m/min 0 m/min 13,000 mL/min -23,000 mL/min I'm asking for the calculated ventilation. While the physical value cannot be a negative number, the Answers: Response Feedback: calculated value can be negative. Alveolar ventilation ventilation rate x (Vt-dead space volume In this instance, the dead space is that of the snorkel and the conductingaExplanation / Answer
Minute volume is total amount of ventilation in one minute. This can be calculated by using the equation, Minute volume =Tidal volume ×respiratory rate
Where, Tidal volume is volume of air in normal breathing.
Minute volume comprises of alveolar volume and dead space volume. In this question dead volume space will be combination of both snorkel and conducting airway.
Dead space volume =1000+150=1150 ml, Tidal volume =500 ml, respiratory rate =20 per minute
The final equation will be,
Alveolar ventilation +dead space volume = Tidal volume ×respiratory rate
Alveolar ventilation +1150=500×20,
Alveolar ventilation= 10000-1150= 8850 ml per minute.