Question

To minimize the risk of a lung overpressure injury during an independent emergency ascent, what must you do?

1) Exhale completely prior to beginning your ascent.
2) Make at least three attempts at inhaling during your ascent.
3) Exhale continuously any time you cannot inhale.
4) Spit out your regulator at the beginning of the ascent.

Answer 1

To minimize the risk of lung overpressure injury during an emergency ascent, exhale completely prior to beginning the ascent and exhale continuously when unable to inhale. Do not make three attempts at inhaling or spit out the regulator.

Step-by-step explanation:

To minimize the risk of a lung overpressure injury during an independent emergency ascent, it is important to follow specific procedures. Exhaling completely prior to beginning your ascent is necessary because trapped air in the lungs can expand due to the reduced surrounding pressure. This can result in lung overpressure injuries. Making at least three attempts at inhaling during your ascent is incorrect and can increase the risk of injury. Exhaling continuously any time you cannot inhale is important to release pressure and prevent injury. Finally, spitting out your regulator at the beginning of the ascent is also incorrect and can lead to an unsafe ascent. The regulator provides the diver with a continuous supply of breathing gas, which is crucial during an emergency ascent.