THE CASE
A 42-year-old man with a history of bipolar disorder with psychotic features, asthma, and chronic pain was brought to the emergency department (ED) by his father due to altered mental status, coughing, and vomiting. The patient was unable to recall events earlier in the day in detail but stated that he remembered using his inhaler for his cough, which seemed to precipitate his vomiting. The patient’s home medications were listed as albuterol 90 mcg, methadone 90 mg/d, and quetiapine 100 mg.
While in the ED, the patient was tachycardic (heart rate, 102 bpm), but all other vital signs were normal. He was agitated and at one point required restraints. On exam, he had epigastric tenderness to palpation, and his lungs were clear to auscultation bilaterally.
Blood work was notable for an elevated lipase level of 729 U/L (normal range, 0-160 U/L). Complete blood count, comprehensive metabolic panel, urinalysis, chest x-ray, and alcohol levels were unremarkable. Computed tomography of the abdomen/pelvis and ultrasound of the abdomen showed excess stool and gallbladder sludge without cholecystitis.
The patient was treated symptomatically with intravenous fluids, ondansetron, and lorazepam. He was admitted with a working diagnosis of acute pancreatitis and possible acute psychosis in the setting of schizophrenia.
A few hours after presentation, the patient returned to his baseline mental status. Over the next 24 hours, his lipase level trended down to normal.
THE DIAGNOSIS
After the patient’s discharge, the pharmacist from his primary care provider’s office called as part of the routine post-hospital follow-up and a medication reconciliation was performed. During this call, the patient stated he had used 2 different nasal sprays prior to his ED presentation.
The pharmacist asked him to read the names of each medication. He related the first was naloxone and the second, fluticasone (neither of which was included on his medication list). Upon further questioning, the pharmacist elicited clarification from the patient that he had, in fact, taken 2 doses of naloxone, shortly after which his vomiting began.
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