Question

If an individual has a tidal volume of 500 ml , dead space of 145 ml and breathing rate of 14 times per minute then calculate pulmonary ventilation rate

Answer 1

Alveolar ventilation = 13 breaths/min x (400 – 125 mL/breath)

Answer 2

The pace at which gas enters or departs the lungs is referred to as ventilation.

• Minute ventilation, alveolar ventilation, and dead space ventilation are the three forms of ventilation.

• The alveolar ventilation rate is affected by the number of breaths taken, the tidal volume, and the amount of dead space in the lungs.

• The partial pressure of a gas in the alveoli is referred to as PA, whereas the partial pressure of that gas in arterial blood is referred to as Pa. Because PAO2 is larger than PaO2 in deoxygenated blood, the gas exchange happens by passive diffusion.

hence pulmonary ventilation rate= TIDAL VOLUME x BREATHING RATE.

                                                       = 500 x 14

                                                       = 7000 ml/min

HENCE THE PULMONARY VENTILATION RATE IS 7000 ml/min.