Correct Answer: B

Rationale: The correct answer is B. Clients with renal failure are unable to excrete fluids effectively, leading to an increased risk of fluid volume excess. Option A, the client taking diuretics, would be at risk for fluid volume deficit due to increased urine output caused by the diuretics. Option C, the client with an ileostomy, is at risk for fluid volume deficit due to increased output from the ileostomy. Option D, the client who requires gastrointestinal suctioning, may be at risk for dehydration, but not specifically excess fluid volume.

Correct Answer: A

Rationale: The correct answer is A. Clients with a colostomy are at risk for deficient fluid volume due to the loss of fluid through the colostomy. In colostomy, there can be increased fluid loss through the stoma, which may lead to dehydration and electrolyte imbalances. Choices B, C, and D do not directly relate to the risk for deficient fluid volume. Clients with congestive heart failure are more prone to fluid overload rather than deficient volume. Clients with decreased kidney function are at risk for fluid retention, not deficient volume. Clients receiving frequent wound irrigations may be at risk for infection, but this does not directly indicate deficient fluid volume.

Correct Answer: D

Rationale: Polyuria, polydipsia, and polyphagia are classic signs of hyperglycemia, indicating high blood glucose levels. The priority action for the nurse is to check the client's blood glucose levels to assess the severity of hyperglycemia and determine the need for appropriate interventions. Administering insulin (Choice A) may be necessary based on the blood glucose levels but should only be done after confirming the current status. Encouraging increased fluid intake (Choice B) may exacerbate the symptoms by further diluting the blood glucose concentration. While monitoring for signs of dehydration (Choice C) is important in the long term, the immediate action should focus on determining the blood glucose levels first.

Correct Answer: C

Rationale: In hypocalcemia, a decreased level of calcium can lead to a prolonged QT interval on the ECG due to its role in myocardial repolarization. A widened T wave (Choice A) is typically seen in hyperkalemia. A prominent U wave (Choice B) is associated with hypokalemia. A shortened ST segment (Choice D) is not a typical ECG finding in hypocalcemia.

Correct Answer: D

Rationale: The most appropriate intervention for a postoperative male client with diabetes mellitus who reports impotence and concerns about its impact on his marriage is to suggest referral to a sex counselor or other appropriate professional. Impotence can have significant emotional and relational effects, and a sex counselor is specifically trained to address such concerns. Encouraging the client to ask questions about personal sexuality (Choice A) may not provide the specialized support needed in this situation. Providing time for privacy (Choice B) is important but may not directly address the client's concerns about impotence. Providing support for the spouse or significant other (Choice C) is valuable but may not be as effective as seeking professional help to address the client's specific issue of impotence.