Advanced Dive Medicine Loss of conciousness

Question 1

Hypoxia occurrence

Answer 1

Occur during any phase of dive with Rapid onset

Question 2

Hypoxia during Air Dive

Answer 2

Media- Contaminated gas (CO), improper line up, equipment failure, improper purge
Injury - Airway obstruction, Pneumothorax, spinal, swimming induced pulmonary edema (SIPE)

Question 3

CNS O2 Toxcicty

Answer 3

VENTID-C, Muscle twitching is clearest warning, convulsion may occur 1-2mins off O2.
Generally occurs in 1.3 PPO2 wet and 2.4 PPO2 Dry.

Question 4

Hypercapnia

Answer 4

Occurs on BT generally deeper than 120 due to resistance in media.Slowing work relieves, Progressive onset commonly accompanied by headache and rapid heart beat.

Question 5

AGE

Answer 5

Rapid occurrence during ascent or shortly after surfacing w/ :10. Must have recompression, only occurs on ascent/upward excursion/positive pressure breathing.

Question 6

DCS

Answer 6

Onset usually latent compared to AGE, Check dive profile

Question 7

CO Poisoning

Answer 7

Due to PPo2 at depth. Most likely to go unconscious during ascent. accompanied by headache burning eyes foul taste.