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Zorluk: ZorAnxiety, OCD, and Trauma-Related Disorders

A 27-year-old man is evaluated in the clinic for severe anxiety and sleep disturbances. Three months ago, he survived a severe house fire in which he sustained extensive burns to his right lower extremity. The burns were complicated by methicillin-resistant Staphylococcus aureus (MRSA) osteomyelitis, for which he is currently in the second week of a 6-week course of oral linezolid. He reports that for the past two months, he has been having intense nightmares about the fire and frequently wakes up drenched in sweat. He actively avoids cooking or being near stoves and feels "on edge" most of the day. During the interview, a loud siren sounds outside; he suddenly drops to the floor, covers his head, and appears briefly unresponsive to the physician's voice, vividly reliving the fire. He has no previous psychiatric history. Which of the following is the most appropriate next step in management?

  1. A
    Initiate citalopram therapy
  2. B
    Initiate quetiapine therapy
  3. Referral for trauma-focused cognitive behavioral therapyCevap
  4. D
    Initiate venlafaxine therapy
  5. E
    Initiate phenelzine therapy

Cevap

Referral for trauma-focused cognitive behavioral therapy
The correct answer is referral for trauma-focused cognitive behavioral therapy. This patient meets the criteria for Post-Traumatic Stress Disorder (PTSD), presenting with intrusive symptoms (nightmares, dissociative flashbacks), avoidance behavior, and hyperarousal lasting for more than one month following a life-threatening event. The first-line treatments for PTSD include trauma-focused psychotherapy (e.g., cognitive processing therapy, prolonged exposure) and pharmacotherapy with selective serotonin reuptake inhibitors (SSRIs) or serotonin-norepinephrine reuptake inhibitors (SNRIs). However, this patient is currently taking linezolid. Linezolid is an oxazolidinone antibiotic that also functions as a reversible, non-selective monoamine oxidase inhibitor (MAOI). Coadministration of linezolid with serotonergic agents (like SSRIs or SNRIs) is strictly contraindicated because it can precipitate serotonin syndrome, a potentially life-threatening condition characterized by autonomic instability, altered mental status, and neuromuscular hyperactivity. Therefore, non-pharmacological treatment with trauma-focused cognitive behavioral therapy is the safest and most appropriate first-line intervention.

Adım Adım Çözüm

1
Diagnose the patient's psychiatric condition based on the clinical presentation.
The patient has Post-Traumatic Stress Disorder (PTSD), evidenced by trauma exposure greater than 1 month ago, nightmares (intrusions), avoidance of triggers, hyperarousal, and dissociative flashbacks.
Accurate diagnosis is required to select the correct treatment algorithm.
2
Identify the patient's current medical treatments and potential contraindications.
The patient is taking linezolid for MRSA osteomyelitis. Linezolid is an oxazolidinone antibiotic with reversible, non-selective monoamine oxidase inhibitor (MAOI) properties.
Psychiatric pharmacotherapy often interacts with systemic medical treatments.
3
Select the most appropriate first-line treatment for PTSD that avoids dangerous drug interactions.
First-line treatments for PTSD include SSRIs, SNRIs, and trauma-focused cognitive behavioral therapy (TF-CBT). Because linezolid acts as an MAOI, adding an SSRI or SNRI is contraindicated due to the risk of serotonin syndrome. Therefore, TF-CBT is the best next step.
Maximizes therapeutic efficacy while preventing life-threatening pharmacological interactions.

Anahtar Kavram

Patients with PTSD who are taking medications with MAOI activity (such as the antibiotic linezolid) must not be prescribed serotonergic agents (SSRIs, SNRIs) due to the risk of serotonin syndrome; trauma-focused psychotherapy is the treatment of choice in these cases.
Tahmini Süre:1m 30s
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Anxiety, OCD, and Trauma-Related Disorders

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