The physician orders mefoxin (Cefoxitin) 800 mg IV Q 8 hours. To reconstitute the medications the instructions state to add 7.5 mL of NSS for a total of 8 mL with each mL containing 250 mg. How many millilitres will be given?

Choice A reason: Hypocalcemia may occur in AKI due to impaired vitamin D activation, but it is not a primary concern in the diuresis phase, where kidneys produce large urine volumes. Calcium imbalances are less immediate than fluid losses, which can rapidly destabilize hemodynamics during this phase.

Choice B reason: In the diuresis phase of AKI, kidneys regain function, producing excessive urine, which can lead to hypovolemia. Fluid loss depletes intravascular volume, causing hypotension, tachycardia, and organ hypoperfusion. Monitoring is critical to prevent dehydration and ensure adequate fluid replacement to maintain hemodynamic stability during recovery.

Choice C reason: Increased blood pressure is more common in the oliguric phase of AKI due to fluid overload. In the diuresis phase, excessive urine output reduces volume, potentially lowering blood pressure. Hypertension is not a typical complication during this phase, making it an incorrect focus for monitoring.

Choice D reason: Hyperkalemia is a concern in the oliguric phase of AKI due to reduced potassium excretion. In the diuresis phase, increased urine output facilitates potassium clearance, reducing hyperkalemia risk. Hypovolemia from excessive fluid loss is a more immediate concern during this phase of AKI recovery.

Choice A reason: Renal failure impairs erythropoietin production, a hormone stimulating red blood cell synthesis, leading to anemia, not an increased red blood cell count. Reduced glomerular filtration exacerbates toxin accumulation, further suppressing bone marrow activity, making an elevated red blood cell count unlikely in this condition.

Choice B reason: In renal failure, kidneys fail to excrete potassium, leading to hyperkalemia, not decreased serum potassium. Hyperkalemia can cause cardiac arrhythmias due to altered membrane potentials. A decreased potassium level is more associated with conditions like diuretic use or vomiting, not renal failure.

Choice C reason: Increased serum creatinine is a hallmark of renal failure, as kidneys cannot filter creatinine, a muscle metabolism byproduct. Elevated levels reflect reduced glomerular filtration rate, indicating kidney dysfunction. This is a reliable marker for assessing renal failure severity and progression, making it an expected finding.

Choice D reason: Renal failure typically causes hypocalcemia, not increased serum calcium, due to impaired vitamin D activation and phosphate retention, which binds calcium. Hypercalcemia is rare and may occur in other conditions like hyperparathyroidism, not renal failure, where calcium homeostasis is disrupted by kidney dysfunction.