A patient with chronic renal failure has a urine output of 620 mL in 24 hours, periorbital edema, and crackles heard in all lung fields. Which nursing intervention should be prioritized to prevent further complications?

Choice A rationale Increasing oral fluid intake in a patient with chronic renal failure and clinical signs of fluid overload is contraindicated. Chronic renal failure results in a decreased glomerular filtration rate, meaning the kidneys cannot effectively excrete excess water. Adding more fluids would worsen the periorbital edema and pulmonary crackles, potentially leading to acute pulmonary edema or heart failure. Normal urine output is typically above 30 mL per hour, and this patient is nearing oliguria. Choice B rationale This is the priority intervention because crackles in all lung fields indicate pulmonary congestion, which compromises gas exchange. Elevating the head of the bed to semi-Fowler's position uses gravity to shift fluid away from the upper lungs and reduces the pressure of abdominal organs against the diaphragm. This maximizes lung expansion and improves oxygenation. Addressing respiratory distress is always a higher priority than skin integrity or non-urgent medication administration in an unstable patient. Choice C rationale While skin care and repositioning are important for patients with edema to prevent pressure ulcers, this is not the immediate priority when the patient has compromised respiratory function. Edematous tissue has reduced perfusion, making it more susceptible to breakdown, but the presence of crackles indicates a life-threatening fluid shift into the alveoli. The nurse must first ensure the patient can breathe effectively before addressing the secondary risk of skin integrity impairment during this acute phase. Choice D rationale Administering diuretics is a standard treatment for fluid volume excess, but doing so without monitoring vital signs is unsafe practice. Diuretics can cause rapid shifts in fluid and electrolytes, leading to hypotension or arrhythmias, especially in renal failure. Furthermore, the nurse must assess the blood pressure and heart rate to determine the patient's hemodynamic stability before and after medication. Immediate administration without assessment violates core nursing safety standards and patient monitoring protocols.