Nick normal alveolar ventilation rate (AVR) during mild exercise is 6.0 L/min. She goes snorkeling to a beach, on a warm summer day, water is not too cold. The snorkel volume is 50 ml. Assuming this is a mild exercise for Angina, what should be her respiratory rate to maintain 6.0 L while snorkeling. ( Assume a constant tidal volume of 500 ml and anatomic dead space of 150 ml)

RR = 17.14min∧-1

Explanation:

AVR = 6L/min

snorkel volume = 50ml

to calculate the respiratory rate to maintain 6l/min(AVR)

Tidal Volume = 500 ml

anatomic dead space = 150ml

Alvedar ventilation rate = ( TV - Anatomic dead space) x RR

                              6l/min = ( 500 -150)ml x rr

                               600ml = 350 x RR

               RR = 600ml/mins/350ml

               RR = 17.14min∧-1