Why are divers not supposed to ascend or descend quickly?
Decompression sickness: Often called “the bends,” decompression sickness happens when a scuba diver ascends too quickly. Divers breathe compressed air that contains nitrogen. … But if a diver rises too quickly, the nitrogen forms bubbles in the body. This can cause tissue and nerve damage.
Why does diving 30 m below sea level affect our bodies more than being in a building 30m above sea level?
Diving 30mbelow sea level affects our bodies more than being in a building 30m above sea level because when you’re below sea level the pressure of your lungs expand and can fill with water not being able to breathe.
What would happen to a diver who does not exhale?
Pulmonary barotrauma (pulmonary overpressurization syndrome, POPS, or burst lung) can occur if the diver fails to expel air from the lungs during ascent. As the diver rises, the volume of the gas in the lung expands and can cause damage if the excess is not exhaled.
What does scuba diving do to your lungs?
As you ascend, water pressure decreases, and the air in your lungs expands. This can make the air sacs in your lungs rupture and make it hard for you to breathe. If air bubbles get into an artery, they can cause a blockage that affects your organs. The blockage is called an arterial gas embolism.
What is the most common injury in scuba diving?
The most common injury in divers is ear barotrauma (Box 3-03). On descent, failure to equalize pressure changes within the middle ear space creates a pressure gradient across the eardrum.
What body system does decompression sickness affect?
Type I decompression sickness tends to be mild and affects primarily the joints, skin, and lymphatic vessels. Type II decompression sickness, which may be life-threatening, often affects vital organ systems, including the brain and spinal cord, the respiratory system, and the circulatory system.
What’s another name for decompression sickness?
Decompression sickness, also called generalized barotrauma or the bends, refers to injuries caused by a rapid decrease in the pressure that surrounds you, of either air or water.
What happens if you cough while scuba diving?
It’s perfectly alright to cough into your regulator until your airway is clear. If you feel that tell tale tickle in the back of your throat, try to move into an open area where you won’t bump into anything. Also, be aware of your buoyancy as you may unknowingly hold your breath.
What is the golden rule of scuba diving?
Dive like your shadow, do not leave any trace and be a sensible part of the underwater world, not an alien. Never enter the water through reed, living corals or water plants. Control your buoyancy. Keep distance from corals and other animals and do not stir up sediment.