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Difficulty: MediumAnxiety, OCD, and Trauma-Related Disorders

A 28-year-old woman, G1P0 at 30 weeks gestation, presents to the emergency department with sudden-onset shortness of breath, palpitations, sweating, and a feeling of impending doom that began 30 minutes ago while she was reading a book at home. She states, "I feel like I am going to die." This is her third such episode in the past month. She has recently started avoiding grocery stores and movie theaters because she fears she might have another attack and be unable to quickly escape.

Vital signs are temperature 37.1°C (98.8°F), blood pressure 120/70 mm Hg, pulse 115/min, and respirations 22/min. Pulse oximetry is 99% on room air. Physical examination shows a gravid uterus consistent with dates. The lungs are clear to auscultation bilaterally, and heart sounds are normal.

Arterial blood gas on room air reveals:
pH: 7.44
PaO2: 104 mm Hg
PaCO2: 29 mm Hg
HCO3-: 21 mEq/L

Her past medical history is notable for a distinct 2-week episode of auditory hallucinations and persecutory delusions 5 years ago that resolved completely without recurrence. Two years ago, she was diagnosed with bipolar disorder following an episode of euphoric mood, hypersexuality, and decreased need for sleep. The patient's husband is in the waiting room. The patient explicitly tells the physician, "Please do not discuss my psychiatric history with my husband. I have never told him, and he would not understand."

Which of the following is the most appropriate next step in the management of this patient?

  1. A
    Admit to the hospital and start therapeutic enoxaparin based on the arterial blood gas results
  2. B
    Prescribe sertraline monotherapy to manage her recurrent anxiety and avoidance behaviors
  3. C
    Disclose her prior diagnoses to her husband because the psychiatric history poses a potential risk to the fetus
  4. D
    Diagnose schizophrenia due to her past symptoms and start low-dose haloperidol
  5. Recommend cognitive-behavioral therapy and respect her request for medical confidentialityAnswer

Answer

Recommend cognitive-behavioral therapy and respect her request for medical confidentiality
The correct answer addresses the patient's acute presentation of panic disorder with agoraphobia using cognitive-behavioral therapy (CBT), a highly effective first-line treatment. CBT is particularly advantageous here because it avoids both the teratogenic risks of medications during pregnancy and the risk of precipitating a manic episode in a patient with a known history of bipolar disorder. Furthermore, it correctly identifies that a competent patient's medical information cannot be disclosed to her husband against her explicit wishes, as there is no imminent danger to a third party that would legally override her right to confidentiality.

Step-by-Step Solution

1
Analyze the patient's current acute presentation.
The patient is experiencing recurrent, unexpected panic attacks and exhibits agoraphobia (avoiding public places like theaters).
Establishing the primary psychiatric diagnosis determines the need for targeted intervention.
2
Evaluate the medical data and psychiatric history for contraindications.
The ABG shows normal pregnancy physiology (chronic respiratory alkalosis). Her history of bipolar disorder makes antidepressant monotherapy unsafe due to the risk of a manic switch.
Identifying comorbidities helps avoid inappropriate or harmful treatments, such as anticoagulation or SSRI monotherapy.
3
Determine the appropriate ethical response regarding her husband.
The physician must honor the patient's request to withhold her medical history.
Competent adult patients retain the right to medical privacy; pregnancy does not negate confidentiality rights unless there is an imminent threat.
4
Synthesize findings to select the best management step.
Cognitive-behavioral therapy is recommended while maintaining confidentiality.
CBT is first-line for panic disorder, avoids pharmacologic risks in bipolar disorder and pregnancy, and respects ethical boundaries.

Key Concept

The management of panic disorder with agoraphobia in a patient with comorbid bipolar disorder requires non-pharmacologic interventions like CBT to prevent SSRI-induced mania. Additionally, a pregnant patient's right to confidentiality must be strictly maintained unless explicit exceptions (e.g., imminent harm) apply.
Estimated Time:1m 30s
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Topics

Anxiety, OCD, and Trauma-Related Disorders

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