What do you do if you experience a reverse block?
A diver surfaces and reports his ears are ringing; he is nauseous and extremely dizzy. What should you do?
What do you do if you experience a sinus squeeze during descent?
In what position is it typically easiest to equalize?
Which is NOT an equalization technique used in diving?
Without adequate equalization, barotrauma (pressure injury) can occur as shallow as:
When should you equalize?
Which is NOT true about equalization on ascent?
What is the most common contributor to a reverse block?
