38-year-old woman with nightmares and fatigue
A 38-year-old woman is seen for follow-up of post-traumatic stress disorder, diagnosed after her involvement in a multi-car collision nine months ago. She has been on venlafaxine 150 mg daily for six months. She reports significant improvement in daytime hypervigilance and intrusive thoughts. However, she continues to have distressing, trauma-related nightmares four to five nights per week, causing awakenings with palpitations and subsequent daytime fatigue. She works as a florist. She denies substance use. Blood pressure is 132/84 mmHg and pulse is 78/min. Which of the following is the most appropriate next step in management?
See the answer and explanation below:
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B
Explanation
Clinical Pearl:
Prazosin, an alpha-1 adrenergic antagonist, is a recommended treatment for persistent nightmares in patients with post-traumatic stress disorder, particularly when this symptom does not resolve with first-line SSRI or SNRI therapy. Benzodiazepines should be avoided in the management of PTSD.
Explanation:
This patient has post-traumatic stress disorder (PTSD) with a partial response to a first-line agent, venlafaxine, but with persistent, distressing nightmares. The most appropriate next step is to add prazosin. Major clinical practice guidelines recommend prazosin as an evidence-based treatment specifically for PTSD-related nightmares that persist despite otherwise effective SSRI or SNRI therapy. Increasing the venlafaxine dose is not the optimal strategy, as guidelines recommend against increasing an SSRI/SNRI dose solely to target nightmares, favoring augmentation instead. Adding clonazepam is inappropriate because benzodiazepines are not recommended for treating PTSD and may worsen outcomes. Switching to paroxetine would abandon a partially effective medication, which is less desirable than augmenting the current regimen. Electroconvulsive therapy is not indicated for this patient's presentation.
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