Which scenario requires admission for pyelonephritis?

• A. Mild dehydration
• B. Sepsis
• C. No fever
• D. Outpatient improvement

Answer: (B)

Systemic involvement from a kidney infection means admission is needed. When pyelonephritis progresses to sepsis, the patient is at risk for rapid deterioration and organ dysfunction, so inpatient care is warranted to give IV antibiotics and IV fluids, and to monitor hemodynamics and mental status. Sepsis signals the body's overwhelmed response to infection, requiring closer observation and the safety net of hospitalization.

Mild dehydration can often be managed as an outpatient with oral rehydration and antibiotics if the patient can tolerate PO intake and has stable vitals. No fever suggests a less severe presentation, also often suitable for outpatient treatment. If someone is already improving as an outpatient, that indicates they don’t need inpatient care.