Practice Test Geeks(CHT) Certified Hyperbaric Technician Practice Test
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Patient Assessment & Clinical Evaluation Flashcards

7 cards from real CHT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Patient Assessment & Clinical Evaluation flashcards as text

  1. A patient with a Wagner Grade 4 diabetic foot ulcer is being evaluated for HBO therapy. This grade indicates:

    Answer: Localized gangrene limited to the forefoot or heel

    Wagner Grade 4 describes localized gangrene of the forefoot or heel, a condition where HBO therapy may aid in demarcation and limb salvage.

  2. During pre-dive assessment, the technician discovers the patient has not eaten for 8 hours. The BEST course of action is to:

    Answer: Provide a light snack before treatment to prevent hypoglycemia

    HBO therapy lowers blood glucose; a light meal before treatment helps prevent hypoglycemia during the session.

  3. Transcutaneous oxygen measurement (TcPO2) is performed before HBO treatment primarily to:

    Answer: Assess tissue perfusion and predict HBO therapy benefit for wound healing

    TcPO2 measures tissue oxygenation at the wound site; values below 40 mmHg (breathing air) and rising to >200 mmHg with O2 predict positive HBO response.

  4. A patient scheduled for HBO therapy has a serum carboxyhemoglobin (COHb) level of 35%. This finding is MOST consistent with:

    Answer: Acute carbon monoxide poisoning

    COHb levels above 25-30% are consistent with significant acute CO poisoning requiring urgent hyperbaric oxygen treatment.

  5. During the pre-treatment screening interview, a patient reports taking sildenafil (Viagra) earlier that day. This is clinically significant because:

    Answer: It is contraindicated with HBO due to risk of severe hypotension

    Sildenafil combined with HBO-induced vasodilation can produce severe hypotension, making the combination potentially dangerous.

  6. Which assessment finding in a patient with a non-healing wound would suggest the POOREST prognosis for HBO therapy benefit?

    Answer: ABI of 0.40 with no surgical revascularization option available

    An ABI of 0.40 indicates severe arterial insufficiency; without adequate perfusion to deliver oxygenated blood, HBO benefits are severely limited.

  7. A patient who completed 20 HBO treatments for a diabetic foot ulcer reports a new onset of blurry near vision. The MOST likely cause is:

    Answer: Myopic shift from HBO-induced lens changes

    HBO therapy commonly induces a temporary myopic shift due to lens protein changes, typically resolving within weeks to months after treatment ends.