Correct Answer: B

Rationale: Before hemodialysis in a client with end-stage renal disease (ESRD), monitoring serum potassium closely is crucial. ESRD patients are at risk of hyperkalemia, which can lead to severe cardiac complications. Checking serum potassium levels helps in assessing and managing this electrolyte imbalance. Serum creatinine (Choice A) is a marker of kidney function but is not the most critical value to monitor before hemodialysis. Serum sodium (Choice C) may be affected in renal disease, but potassium is a more crucial electrolyte to monitor. Hemoglobin (Choice D) is essential for assessing anemia in ESRD but is not the primary focus before hemodialysis.

Correct Answer: C

Rationale: A serum bicarbonate level of 18 mEq/L requires immediate intervention in a client with diabetic ketoacidosis (DKA). A low serum bicarbonate level indicates metabolic acidosis, which can be life-threatening. This condition needs urgent correction to restore acid-base balance. Serum glucose of 300 mg/dl, serum potassium of 5.5 mEq/L, and serum sodium of 135 mEq/L are abnormal values, but they do not pose an immediate threat to the client's life compared to the metabolic acidosis indicated by the low serum bicarbonate level.

Correct Answer: A

Rationale: The correct answer is A: Decreased abdominal girth. In a client with cirrhosis of the liver, a LeVeen shunt is used to treat ascites, which is the accumulation of fluid in the peritoneal cavity. A decrease in abdominal girth indicates that the shunt is effectively draining the ascitic fluid, relieving the client's abdominal distension. Choice B, increased blood pressure, is incorrect as a LeVeen shunt is not expected to impact blood pressure. Choice C, clear breath sounds, is unrelated to the effectiveness of a LeVeen shunt in managing ascites. Choice D, decreased serum albumin, is also not a direct indicator of the shunt's effectiveness in draining ascitic fluid.

Correct Answer: D

Rationale: The correct action for the nurse to implement after a client with hepatic encephalopathy has loose stools following lactulose administration is to monitor the client's mental status. Lactulose is given to lower serum ammonia levels in hepatic encephalopathy, and loose stools can be an expected side effect of its use. Monitoring mental status is crucial because changes in mental status, such as confusion or altered level of consciousness, are key indicators of hepatic encephalopathy worsening. Sending a stool specimen to the lab would not be the priority in this situation as loose stools are a known effect of lactulose. Measuring abdominal girth is more relevant for conditions like ascites, not loose stools. Encouraging increased fiber in the diet may be beneficial for constipation but is not the immediate action needed when loose stools occur after lactulose administration.

Correct Answer: A

Rationale: The correct answer is A. Anuria for the last 12 hours. Anuria, the absence of urine output, indicates complete kidney failure and is a medical emergency that requires immediate attention. In acute kidney injury (AKI), the kidneys are unable to filter waste from the blood effectively, leading to a buildup of toxins and electrolyte imbalances like elevated blood potassium levels. Tachycardia and hypotension (choice B) can be seen in AKI but do not reflect the urgency of addressing anuria. Decreased urine output (choice C) is concerning but not as critical as the absence of urine production. Elevated blood urea nitrogen (BUN) levels (choice D) are indicative of kidney dysfunction but do not demand immediate action as anuria does.