A 45-year-old man who recently emigrated from an area highly endemic for tuberculosis presents to the emergency department with a 4-week history of productive cough, blood-tinged sputum, drenching night sweats, and unintentional weight loss. Vital signs show a temperature of 38.3°C (100.9°F). A chest radiograph reveals a large cavitary lesion in the apical segment of the right upper lobe. Arrange the following management steps in the most appropriate chronological sequence for this patient.
- 1Place the patient in a negative-pressure airborne infection isolation room.
- 2Obtain sputum specimens for acid-fast bacilli (AFB) smear, mycobacterial culture, and nucleic acid amplification testing.
- 3Initiate an empiric four-drug intensive-phase antituberculous regimen (isoniazid, rifampin, pyrazinamide, ethambutol).
- 4Discontinue airborne infection isolation precautions.
- 5De-escalate to a two-drug continuation-phase regimen (isoniazid and rifampin).
Cevap
The correct sequence is: Airborne isolation -> Sputum collection -> Empiric four-drug therapy -> Discontinue isolation -> De-escalate to two-drug therapy.
The proper sequence for managing a patient with suspected active pulmonary tuberculosis begins with airborne infection isolation to prevent transmission. Next, diagnostic sputum specimens must be obtained prior to the administration of any antibiotics to maximize culture yield and allow for drug susceptibility testing. Once specimens are collected, an empiric four-drug intensive-phase regimen (RIPE) is started. The patient remains in isolation until they demonstrate clinical improvement and have three consecutive negative morning sputum AFB smears. Finally, after completing 8 weeks of intensive therapy and confirming susceptibility, the regimen is de-escalated to a two-drug continuation phase.
Adım Adım Çözüm
Anahtar Kavram
The management of suspected active pulmonary tuberculosis follows a strict chronological protocol prioritizing public health (isolation), accurate diagnosis (sputum before drugs), aggressive early treatment (four-drug regimen), criteria-based de-isolation, and planned step-down therapy.
Tahmini Süre:1m 30s