A nurse in the emergency department is caring for a client who collapsed after playing football on a hot day. After reviewing the admission laboratory findings, the nurse recognizes that these findings are consistent with which of the following conditions?

Choice A reason: The normal range for serum creatinine in adult females is approximately 0.6–1.1 mg/dL. A level of 1.8 mg/dL is elevated and indicates impaired kidney function, which is a risk factor for AKI.

Choice B reason: Normal BUN levels are generally between 6 to 24 mg/dL⁸. A BUN level of 200 mg/dL is significantly elevated and suggests kidney dysfunction, which can lead to AKI.

Choice C reason: Serum osmolality in the normal range, which is typically between 275 to 295 mOsm/kg H2O for adults⁹[13][^10^][14][16], does not indicate an increased risk of AKI.

Choice D reason: The normal range for serum magnesium is typically 1.7 to 2.2 mg/dL or 0.85 to 1.10 mmol/L. A level of 2.0 mEq/L (which is equivalent to 2.0 mg/dL) is within the normal range and does not indicate an increased risk for AKI.

Choice A reason: An elevated creatinine level indicates reduced kidney function, which is often the reason a kidney biopsy is being performed in the first place. It is not a contraindication for the procedure.

Choice B reason: Urinary retention does not directly impact the ability to perform a kidney biopsy, as the procedure involves the kidneys and not the lower urinary tract where urine is stored.

Choice C reason: Flank pain is a common symptom in patients with kidney issues and is not a contraindication for a kidney biopsy. The procedure may help diagnose the cause of the ?ank pain.

Choice D reason: Bleeding tendencies are a significant contraindication for a kidney biopsy. Patients with a history of bleeding disorders or those on anticoagulant therapy are at increased risk of bleeding complications from the procedure.