Paramedics bring a 35-year-old previously healthy male to the emergency department after he was found lethargic at home. His wife reports he has been complaining of an excruciating diffuse headache and photophobia since yesterday. Vital signs show a temperature of 39.2°C (102.6°F), pulse of 118/min, and blood pressure of 105/65 mmHg. Neurologic examination demonstrates a depressed level of consciousness and clear bilateral papilledema. The care team suspects acute bacterial meningitis and prepares to manage the patient. Arrange the following interventions in the correct procedural sequence.
- 1Draw peripheral blood cultures
- 2Administer empiric intravenous antibiotics and dexamethasone
- 3Obtain a noncontrast computed tomography (CT) scan of the head
- 4Perform a lumbar puncture to obtain cerebrospinal fluid
Cevap
The correct sequence is: Draw peripheral blood cultures, followed by administration of empiric intravenous antibiotics and dexamethasone, then a noncontrast CT scan of the head, and finally a lumbar puncture.
The correct sequence prioritizes pathogen isolation and immediate life-saving therapy before neuroimaging and invasive procedures. Blood cultures are drawn first, followed immediately by empiric antibiotics and dexamethasone. Because the patient has papilledema and altered mental status, a CT scan is required to rule out a mass lesion before safely proceeding with a lumbar puncture.
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Anahtar Kavram
In patients with suspected bacterial meningitis and indications for cranial imaging (e.g., papilledema, altered mental status), blood cultures should be drawn and empiric antibiotics administered prior to obtaining a head CT and performing a lumbar puncture.