A -year-old man presents to a busy urgent care clinic with a -week history of worsening cough producing blood-tinged sputum, drenching night sweats, and an -kg (-lb) weight loss. He immigrated to the United States from a highly endemic region years ago. His temperature is (), blood pressure is , pulse is , and respiratory rate is . He is currently seated in the crowded main waiting room.
Arrange the following steps in the most appropriate chronological order for the initial workup and management of this patient.
- 1Transfer the patient to a negative-pressure airborne infection isolation room
- 2Obtain a posteroanterior and lateral chest radiograph
- 3Collect three consecutive sputum specimens for acid-fast bacilli smear and culture
- 4Initiate four-drug antituberculous therapy with isoniazid, rifampin, pyrazinamide, and ethambutol
Answer
The correct order is to first establish airborne isolation, then obtain a chest radiograph, collect sputum specimens for AFB/culture, and finally initiate four-drug RIPE therapy.
The correct sequence prioritizes infection control, followed by diagnostic imaging, definitive microbiologic sampling, and finally pharmacotherapy. Airborne isolation is paramount when a patient with suspected active TB is in a public area. A chest radiograph then quickly evaluates the likelihood of TB structural changes. Sputum must be collected for culture and susceptibility testing before any antimicrobials are given to ensure the diagnostic yield is not compromised. Finally, multi-drug RIPE therapy is initiated empirically if clinical suspicion remains high.
Step-by-Step Solution
Key Concept
The initial management of suspected active pulmonary tuberculosis requires immediate airborne infection isolation, followed by radiographic evaluation, microbiologic specimen collection, and then initiation of empiric multi-drug therapy.
Estimated Time:1m 30s