Certified Hyperbaric Technologist Test CHT Hyperbaric Contraindications and Complications 3

Question 1

A diabetic patient consistently experiences hypoglycemia after HBO treatments. The recommended action is to:

Accepted Answer

Check blood glucose before and after each treatment and coordinate with the treating physician

Answer

HBO can lower blood glucose in diabetics; routine monitoring and physician coordination allow safe continuation of therapy.

Question 2

Which medication taken by a patient increases the risk of CNS oxygen toxicity during HBO?

Accepted Answer

Disulfiram (Antabuse)

Answer

Disulfiram lowers the seizure threshold and is associated with increased CNS oxygen toxicity risk during HBO therapy.

Question 3

Tooth squeeze (barodontalgia) during HBO is caused by:

Accepted Answer

Air trapped in dental cavities or beneath fillings

Answer

Barodontalgia occurs when air trapped under defective fillings or in cavities cannot equilibrate with changing chamber pressure.

Question 4

The 'air break' technique used during HBO sessions is intended to:

Accepted Answer

Reduce the risk of oxygen toxicity by interrupting continuous oxygen exposure

Answer

Air breaks involve breathing room air for short periods to reduce cumulative oxygen dose and lower the risk of pulmonary and CNS toxicity.

Question 5

Oxygen-induced bradycardia observed during HBO is generally considered:

Accepted Answer

A normal physiological response to hyperoxia that rarely requires intervention

Answer

Mild bradycardia is a normal vasovagal response to hyperoxia and typically does not require termination of treatment.

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