Question

What would you expect your tv to be if you inhaled a foreign object which completely obstructed your right mainstem bronchus?

Answer 1

If you inhaled a foreign object and completely obstructed your right mainstem bronchus your TV (Tidal Volume) will become half because only your left one will function.

The tidal volume (TV) is the volume of air that circulates between a normal inspiration and expiration without making an additional effort. The normal value is approximately 500 ml or 7 ml/kg of body weight.

Answer 2

The tidal volume (TV) will be decreased greatly and it will be reduced to more than half of normal. In the event of complete obstruction of the right main bronchus; the whole right lung becomes a dead space wherein the right lung will not be ventilated. Ventilation is the exchange of gases between the atmosphere and the alveolus (which is primary site of gas exchange).