A nurse is screening a client for cancer risk factors. The nurse records that the client is a 65-year-old male, clinically obese with a BMI of 31, has a history of past smoking, and drinks moderately. Which of the following is a primary risk factor for prostate cancer?

Choice A reason: Mr. Dominic's evaluation for bladder cancer is important, but there are no acute symptoms reported that require immediate attention over the other patients listed.
Choice B reason: Mr. Bradford's condition is the most concerning. He is 3 days post-radical prostatectomy with significant blood-tinged urine output and complaints of gas pains, which could indicate complications such as bleeding or infection that need immediate assessment.
Choice C reason: Mr. Jennings’ condition is stable with an almost equal in-and-out bladder irrigation, though bladder spasms should be addressed, it is not as immediately critical as Mr. Bradford's symptoms.
Choice D reason: Ms. Griffiths is stable with managed pain levels and normal lab results except for elevated liver enzymes, which do not present an immediate threat compared to Mr. Bradford's condition.

Choice A reason: A serum creatinine level of 6 mg/dL is significantly elevated and indicates impaired kidney function, which is a hallmark of acute kidney injury (AKI). Normal creatinine levels are typically around 0.6 to 1.2 mg/dL for adults, so this level suggests severe kidney impairment.
Choice B reason: A serum potassium level of 4.5 mEq/L is within the normal range (3.5-5.0 mEq/L) and does not indicate acute kidney injury. Elevated potassium can be seen in AKI but is not the most specific indicator without other abnormal values.
Choice C reason: A hemoglobin level of 16 g/dL is within the normal range for adults (approximately 13.8 to 17.2 g/dL for men and 12.1 to 15.1 g/dL for women). It does not indicate acute kidney injury.
Choice D reason: A BUN level of 15 mg/dL is within the normal range (7-20 mg/dL) and does not indicate acute kidney injury on its own. Elevated BUN in conjunction with elevated creatinine would be more indicative of AKI.