answers
Advantages of using a dive computer with enriched air nitrox include that (choose
all that apply) Ans✓✓✓ Enriched air computers combine the advantages of EANx
with multilevel diving for maximum dive time. They also have some warnings, but
they don't eliminate the need to personally analyze your gas blend.
After analyzing enriched air, you should compare your analysis with Ans✓✓✓
Make certain the cylinder has the correct blend marked on it. If there is a
significant difference between your analysis and the blender's, it may be a good
idea to determine the cause.
Although recommendations vary slightly regarding how to handle an underwater
convulsion, in all cases the primary concern is getting the diver to the surface to
prevent drowning and to begin providing aid Ans✓✓✓ This recommendation is
based on concerns about whether the diver will be breathing normally during the
convulsion. In all cases, your priority us getting the diver to the surface where you
can begin providing aid
By using your computer's scroll mode or other display, you should determine and
note Ans✓✓✓ This is your maximum depth. Stay above it to keep CNS toxicity
risk low. Although many computers warn if you exceed it, use this feature as a
secondary alert. Know your depth at all times and stay above the maximum
Guidelines to apply when diving with an enriched air computer include (choose all
that apply) Ans✓✓✓ Dive conservatively, well within limits and follow safe diving
practices whether you're diving with air or enriched air
, If a diver convulses underwater, you should (choose all that apply) Ans✓✓✓ Just
as you would any emergency involving an unresponsive diver underwater. (Go
over the procedure)
Hold the regulator in the mouth if it is there
If a diver convulses underwater, your priority is to get the diver to the surface.
Treat the diver as an unresponsive diver. Ans✓✓✓ If a diver convulses
underwater, your priority is to get the diver to the surface. Treat the diver as an
unresponsive diver. Hold the mouthpiece in if it's in the mouth, but don't waste
time trying to replace it if it's not. Take the victim to the surface, establish ample
buoyancy, check for breathing and call for help. Provide rescue breaths if the
victim isn't breathing. Get the victim to the boat or shore and check for a pulse
and breathing. Provide CPR as necessary while waiting for EMS. Some experts
recommend that if the victim's mouthpiece is in place, hold it there and wait for
the convulsion to subside before surfacing the victim.
If a diver is suspected of having DCI after an enriched air dive.... Ans✓✓✓ Provide
emergency care as you normally would
the higher the oxygen content in enriched air diving is not an issue with respect to
providing oxygen in a DCI situation
If a diver is suspected of having decompression illness after an enriched air dive,
the steps to take are (choose all that apply) Ans✓✓✓ Follow the procedures just
as you would for an air dive: Provide emergency oxygen and first aid/CPR as
necessary, and contact EMS, DAN and/or other appropriate emergency services
for the area. When possible, tell emergency personnel the particulars about the
diver's dive profile, including depth, time and whether the diver was using a dive
computer or tables and what the blend was. If you run out of oxygen before