Certified Hyperbaric Technologist Test CHT Decompression Sickness and Gas Embolism Treatment 2

Question 1

USN Treatment Table 5 is used for:

Accepted Answer

Mild DCS (Type I) with complete relief within 10 minutes at 60 fsw

Answer

Table 5 is a shorter table appropriate only when symptoms fully resolve quickly at 60 fsw and the presentation is Type I (non-neurological) DCS.

Question 2

In a multiplace chamber treating DCS, the inside tender breathes air while the patient breathes 100% oxygen at 60 fsw. The tender must be aware of:

Accepted Answer

Their own decompression obligation acquired from the air exposure at 2.8 ATA

Answer

Air-breathing tenders acquire nitrogen saturation at treatment pressure and must follow appropriate decompression schedules when surfacing.

Question 3

Recompression therapy for AGE is most effective when initiated:

Accepted Answer

As quickly as possible, ideally within hours of symptom onset

Answer

Early recompression reduces bubble size and restores tissue perfusion; delays significantly worsen neurological outcomes in AGE.

Question 4

The 'bend' (limb-bend) in DCS most commonly affects which joint?

Accepted Answer

The shoulder and elbow in divers

Answer

Shoulder and elbow joint pain (limb bends) are classically described in scuba divers; the specific joint varies by the type of diving activity performed.

Question 5

What is 'flying DCS' (altitude DCS)?

Accepted Answer

DCS triggered by reduced atmospheric pressure during air travel after diving

Answer

Flying after diving reduces ambient pressure, decreasing nitrogen solubility and precipitating bubble formation from residual dissolved nitrogen.

Certified Hyperbaric Technologist Test Practice Test

Certified Hyperbaric Technologist Test Practice Test

Certified Hyperbaric Technologist Test CHT Decompression Sickness and Gas Embolism Treatment 2