Certified Hyperbaric Technologist Test CHT Hyperbaric Contraindications and Complications

Question 1

Which condition is considered an absolute contraindication to hyperbaric oxygen therapy?

Accepted Answer

Untreated pneumothorax

Answer

Claustrophobia

Answer

Controlled hypertension

Answer

Mild anemia

Question 2

Oxygen toxicity affecting the central nervous system (CNS) in the hyperbaric environment is also known as:

Accepted Answer

Paul Bert effect

Answer

Lorrain Smith effect

Answer

Henry's Law effect

Answer

Dalton's effect

Question 3

Which of the following is a sign of middle ear barotrauma in a hyperbaric patient?

Accepted Answer

Ear pain and hearing loss during compression

Answer

Chest tightness during decompression

Answer

Nausea only after treatment

Answer

Skin mottling at depth

Question 4

What is the most common complication of hyperbaric oxygen therapy?

Accepted Answer

Middle ear barotrauma

Answer

CNS oxygen toxicity seizure

Answer

Pulmonary barotrauma

Answer

Arterial gas embolism

Question 5

A patient on doxorubicin (Adriamycin) chemotherapy requires HBO. What is the primary concern?

Accepted Answer

Increased pulmonary oxygen toxicity risk

Answer

Reduced wound healing response

Answer

Elevated CNS seizure threshold

Answer

Decreased chamber pressure tolerance

Question 6

Which symptom indicates possible pulmonary oxygen toxicity (Lorrain Smith effect) in a patient receiving multiple HBO sessions?

Accepted Answer

Substernal chest pain and cough between sessions

Answer

Sudden seizure at depth

Answer

Sinus pressure during compression

Answer

Joint pain after decompression