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

Discontinue HBO therapy immediately

Answer

Administer glucose only after the session ends

Answer

Increase insulin dosing before sessions

Question 2

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

Accepted Answer

Disulfiram (Antabuse)

Answer

Metformin

Answer

Lisinopril

Answer

Atorvastatin

Question 3

Tooth squeeze (barodontalgia) during HBO is caused by:

Accepted Answer

Air trapped in dental cavities or beneath fillings

Answer

Excessive oxygen absorption by enamel

Answer

Pressure changes affecting saliva production

Answer

Nitrogen diffusing into tooth pulp

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

Allow chamber pressure to stabilize at depth

Answer

Provide room air to maintain nitrogen balance

Answer

Test patient tolerance to pressure changes

Question 5

Oxygen-induced bradycardia observed during HBO is generally considered:

Accepted Answer

A normal physiological response to hyperoxia that rarely requires intervention

Answer

A life-threatening emergency requiring immediate decompression

Answer

A sign of impending CNS oxygen toxicity seizure

Answer

An absolute contraindication to continuing therapy

Question 6

A patient with a pacemaker is referred for HBO therapy. The primary concern is:

Accepted Answer

Whether the device is rated for hyperbaric pressures

Answer

Electromagnetic interference from the chamber

Answer

Oxygen toxicity reducing pacemaker battery life

Answer

Pressure causing lead dislodgement during compression