A nurse is caring for a client who underwent a radical nephrectomy for renal cell carcinoma 24 hours ago. Which nursing intervention should be the priority?

Monitoring urine output hourly and assessing for acute kidney injury is the priority because the remaining kidney must compensate for lost function, and early detection prevents life-threatening complications. Other interventions like pain management and ambulation are important but secondary to renal safety.

Postoperative Priority After Radical Nephrectomy

Following a radical nephrectomy, the immediate postoperative period carries the highest risk for complications related to the surgical site and the sudden reduction in nephron mass. While all listed interventions are important components of holistic care, the priority is determined by physiological urgency and the prevention of life-threatening events.

The remaining kidney must rapidly compensate for the loss of the resected one. This compensatory mechanism, known as hyperfiltration, places significant stress on the remaining nephrons. The primary, immediate threat is acute kidney injury (AKI), which can stem from prerenal causes like hypovolemia, intrarenal damage from surgical manipulation or ischemia, or postrenal obstruction. A significant drop in urine output is the earliest and most sensitive clinical indicator of AKI. By monitoring urine output hourly, the nurse can detect oliguria (typically defined as less than 0.5 mL/kg/hr) immediately, allowing for prompt intervention to restore renal perfusion and prevent irreversible parenchymal damage ^[1]. This aligns with the core ERAS principle of goal-directed fluid therapy and early detection of physiological derangements to attenuate the surgical stress response and facilitate recovery ^[2]. A delay in recognizing AKI can lead to fluid overload, electrolyte crises such as life-threatening hyperkalemia, and metabolic acidosis, directly jeopardizing the patient's stability.

The other options, while clinically relevant, address a lower level of physiological priority in the first 24 hours. Administering prescribed analgesics is crucial for comfort and facilitating deep breathing, but unmanaged pain, while distressing, is not immediately life-threatening in the same way as acute renal failure. Early ambulation to prevent deep vein thrombosis is a core component of ERAS protocols to reduce thromboembolic risk, yet this intervention is typically initiated after hemodynamic stability and adequate pain control are achieved, not as the absolute first priority over assessing end-organ perfusion [1, 2]. Providing emotional support for body image changes is a vital psychosocial need, but it is addressed throughout the recovery process and does not take precedence over a potentially fatal physiological complication in the immediate postoperative window. The nurse’s immediate focus must be on ensuring the functional integrity of the remaining kidney through vigilant, data-driven monitoring.