e4 medical Flashcards
In a severe emergency you could achieve positive buoyancy by shedding weights. What would be the most likely dangers of this action?
Pulmonary barotrauma
You and your buddy are using a SCUBA system with half mask and communications. You notice your buddy is motionless, and the mouthpiece has been displaced. Your buddy is 3 to 4m meters from you. What should you do?
Swim over, assess the situation, inform topside & take remedial action
If you ran out of air and had to ditch your weight belt at 3m, you would be most at risk from?
A burst lung
Despite your efforts to control your rate of breathing on a hard working SCUBA dive, you notice an increasing headache. What is the most likely explanation for this?
Hypercapnia caused by inadequate lung ventilation
The partial pressure of oxygen in diving operations should not exceed?
1.4 bar for both SCUBA and Surface Supplied Diving Operations
Which of the following diving disorders describes the condition caused when the breathing gas escapes from the alveoli and enters the blood stream?
arterial gas embolsim
the first phase of an oxygen hit causes the body to become rigid. this phase is called?
tonic
In near drowning incidents, despite losing consciousness the casualty sometimes has no water in the lungs when they are recovered. Why?
the epiglottis diverts any water into the stomach
Carbon Monoxide is a dangerous gas because?
Select one:
a.
It decreases oxygenation of the tissues
b.
It increases the risk of acute decompression illness
c.
It is a serious fire hazard
d.
Both A & C
e.
None of the above
A
Which of the following would probably NOT be a good first aid measure for a conscious diver who has suffered a near drowning incident during a shallow inspection dive at 2m depth?
Select one:
a.
Place the diver in the comfortable position
b.
Administer oxygen to the diver
c.
Reassure the diver
d.
Arrange rapid transfer to hospital
e.
Arrange urgent recompression
e- arrange urgent recompression
If a diver started to convulse underwater whilst using mixed gas breathing system, what should you do?
Select one:
a.
Lift the diver to the surface immediately
b.
Wait until the diver relaxes and then carry out a rescue
c.
Attempt to restrain the diver whilst convulsing
d.
Give him something to bite on whilst convulsing
e.
Extend the airway and lift them to the surface immediately
B- wait utnil the diver relaxes and then rescue
