Final answer:
For a patient with a suspected TB infection, the nurse practitioner should treat with rifampin, ethambutol, INH, and pyrazinamide, as these are the standard first-line drugs for TB treatment.
Step-by-step explanation:
When a patient comes to the clinic with a suspected TB infection and after obtaining a sputum sample for culture and sensitivity, the nurse practitioner should initiate treatment with a combination of antibiotics commonly used in this context. The appropriate approach would be to treat with rifampin, ethambutol, INH (isoniazid), and pyrazinamide, as these drugs are part of the recommended regimen for treating tuberculosis, especially during the initial phase of treatment. This regimen addresses the potential for drug resistance and is designed to eradicate the infection completely, preventing recurrence. It is crucial to begin treatment promptly rather than waiting for culture results, as TB is a serious and potentially contagious illness. However, referral to the emergency department (ED) may be necessary if the patient is in severe distress or presents a more immediate health risk.