A nurse is caring for a 65-year-old male client admitted with acute pyelonephritis. He presents with high fever (102.8°F), severe flank pain, nausea, and vomiting. Laboratory results show elevated white blood cell count and positive urine culture for E. coli. Which nursing intervention should be the highest priority to prevent complications?

Monitoring vital signs and assessing for sepsis is the highest priority because pyelonephritis can rapidly progress to life-threatening sepsis. Other interventions are important but less urgent for complication prevention.

Analysis of Priority Intervention for Acute Pyelonephritis

The correct answer is 4. In a client with acute pyelonephritis presenting with a high fever of 102.8°F, severe flank pain, and an elevated white blood cell count, the highest priority is to monitor vital signs every 4 hours and assess for signs of sepsis. This intervention directly addresses the most immediate life-threatening complication: the progression of a severe infection to sepsis and septic shock.

The Surviving Sepsis Campaign guidelines emphasize that sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection ^[3]. A client with a confirmed gram-negative infection (E. coli), high fever, and tachycardia meets the preliminary criteria for screening. The guidelines further stress that early identification and appropriate management in the initial hours after sepsis develops are critical to improving outcomes ^[3]. The 2008 iteration of these guidelines also established a structured approach to the early recognition of severe sepsis through systematic monitoring . By assessing vital signs every 4 hours, the nurse performs active surveillance for the hallmarks of systemic inflammatory response and early organ dysfunction, such as hypotension, widening pulse pressure, altered mental status, and decreasing urine output. This is the cornerstone of preventing a urinary tract infection from escalating into a systemic, life-threatening crisis.

The other options represent important, but secondary, nursing interventions. Encouraging fluid intake (1) is a key strategy for flushing bacteria from the urinary tract and managing fever, as highlighted in guidelines for catheter-associated UTIs . However, in a client with active nausea and vomiting, oral intake may be poorly tolerated and is not the immediate safety priority over detecting hemodynamic instability. Administering prescribed analgesics (2) addresses comfort, which is a vital aspect of care, but pain management does not take precedence over monitoring for a potentially fatal complication. Monitoring intake and output every 8 hours (3) is a component of assessing renal function and fluid balance, but the frequency of every 8 hours is insufficient for the acute phase of a severe infection where deterioration can occur rapidly. The priority is the more frequent and focused assessment of vital signs to detect the early transition from infection to sepsis, a concept central to the consensus definitions developed to trigger timely and effective treatment .