Correct Answer: B

Rationale: When a client expresses anxiety, it is essential for the nurse to encourage the client to verbalize their feelings. This helps the client express concerns, fears, and uncertainties, enabling the nurse to provide appropriate emotional support. Administering a sedative (Choice A) should not be the initial response as it does not address the underlying emotional needs of the client. Calling the surgeon to address anxiety (Choice C) may not be within the nurse's scope of practice and may not directly address the client's emotional needs. Providing information on post-op care (Choice D) is important but not the priority when the client is experiencing anxiety preoperatively.

Correct Answer: B

Rationale: Frequent urge suppression can lead to constipation, especially postoperatively. Suppressing the urge to defecate can disrupt normal bowel movements and result in constipation. Increased physical activity, increased fiber intake, and adequate fluid intake are measures that typically help prevent constipation by promoting bowel regularity and preventing stool hardening. Therefore, choices A, C, and D are not behaviors that increase the client's risk for constipation.

Correct Answer: B

Rationale: Increased heart rate is a common sign of fluid volume deficit (FVD) as the body compensates for decreased fluid levels. When a client is experiencing FVD, the body tries to maintain perfusion to vital organs by increasing the heart rate. This compensatory mechanism helps to improve cardiac output and maintain blood pressure. Choices A, C, and D are incorrect because in FVD, hematocrit may be increased due to hemoconcentration, blood pressure tends to decrease as a compensatory response to FVD, and respiratory rate is usually unaffected or may increase due to attempts to maintain oxygenation.

Correct Answer: B

Rationale: Postoperative clients are at risk for constipation due to various factors, including decreased fluid intake. Insufficient fluid consumption can lead to hardening of stools, making them difficult to pass. Increased fiber intake (choice A) is actually beneficial for preventing constipation as it adds bulk to the stool. Frequent urge suppression (choice C) can contribute to constipation by disrupting normal bowel habits. Increased physical activity (choice D) generally helps promote bowel movements and reduce the risk of constipation.

Correct Answer: B

Rationale: The correct action for the nurse to take with the unused portion of a narcotic medication after administration is to discard it with a witness present. This procedure is necessary to comply with controlled substance regulations and prevent diversion or misuse of the medication. Storing it in the medication cart for later use is inappropriate as it can lead to unauthorized access. Returning it to the pharmacy is not recommended as the medication has already been dispensed. Reporting it to the provider is not the standard procedure for disposing of controlled substances.