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Difficulty: MediumAnxiety, OCD, and Trauma-Related Disorders

During a routine health clearance appointment, a 20-year-old nursing student confides in the physician about severe anxiety that is jeopardizing her clinical rotations. For the past 4 months, she has experienced overwhelming fear, nausea, diaphoresis, and lightheadedness exclusively when asked to perform venipuncture or assist with wound care. On two occasions, she lost consciousness while observing minor surgical procedures. She states, "I understand the procedures logically, but the moment I see blood or needles, the room starts spinning." She denies anxiety during lectures, written examinations, or general patient interactions. She has no past psychiatric history, takes no medications, and her physical examination today is unremarkable. Which of the following is the most appropriate next step in the management of this patient?

  1. Referral for cognitive-behavioral therapy with applied tension techniquesAnswer
  2. B
    Administration of propranolol prior to clinical procedures
  3. C
    Administration of alprazolam prior to clinical procedures
  4. D
    Initiation of daily sertraline therapy
  5. E
    Measurement of serum thyroid-stimulating hormone levels

Answer

Referral for cognitive-behavioral therapy with applied tension techniques
The correct answer is referral for cognitive-behavioral therapy with applied tension techniques. This patient's presentation is highly characteristic of specific phobia, blood-injection-injury (BII) type, given her intense fear and syncope triggered exclusively by medical procedures involving blood or needles. Unlike other specific phobias that cause sustained sympathetic arousal (tachycardia, hypertension), BII phobia is characterized by a unique biphasic cardiovascular response: a brief initial increase in heart rate and blood pressure is followed immediately by a robust parasympathetic surge, resulting in profound bradycardia, hypotension, and potentially vasovagal syncope. The gold-standard treatment for specific phobia is cognitive-behavioral therapy (CBT) with graded exposure. For the BII subtype, exposure therapy must be augmented with the applied tension technique. This involves teaching the patient to rhythmically tense the major muscle groups (arms, legs, and torso) during exposure to artificially elevate blood pressure and counteract the vasovagal drop, thereby preventing syncope and allowing habituation to occur.

Step-by-Step Solution

1
Identify the primary psychiatric diagnosis.
The patient experiences intense, disproportionate fear and syncope exclusively in response to seeing blood or needles, which is diagnostic of specific phobia, blood-injection-injury (BII) type.
Accurate diagnosis is required to select the appropriate evidence-based treatment.
2
Determine the underlying pathophysiology of the patient's syncope.
The syncope is caused by a unique biphasic vasovagal response (an initial sympathetic surge followed by profound parasympathetic activation causing bradycardia and hypotension).
Understanding the vasovagal mechanism guides treatment selection and rules out contraindicated therapies like beta-blockers.
3
Select the most appropriate management.
Cognitive-behavioral therapy with exposure and applied tension techniques is selected.
Applied tension increases blood pressure to counteract the parasympathetic vasovagal drop, preventing syncope and facilitating exposure therapy.

Key Concept

Management of Specific Phobia (Blood-Injection-Injury Type)
Estimated Time:1m 15s
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Topics

Anxiety, OCD, and Trauma-Related Disorders

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