Correct Answer: B

Rationale: The correct action to prevent DVT in a postoperative client is to apply sequential compression devices (SCDs) to promote venous return. This helps prevent stasis of blood in the lower extremities, reducing the risk of clot formation. Encouraging bed rest (Choice A) may lead to decreased mobility and increase the risk of DVT. Massaging the client's legs (Choice C) is contraindicated in the presence of DVT as it can dislodge a clot. Encouraging ankle and foot exercises (Choice D) may be beneficial for circulation, but SCDs are more effective at preventing DVT in this scenario.

Correct Answer: A

Rationale: During passive range of motion (ROM) exercises, the nurse is responsible for moving the patient's joints through their range of motion. The correct technique involves performing movements slowly and smoothly, only going to the point of resistance without causing pain. This technique helps maintain joint flexibility and prevent contractures. Choice A is the correct answer as it reflects the appropriate technique for passive ROM exercises. Choices B and C are incorrect because the patient is not actively participating, and ROM exercises should not cause pain. Choice D is incorrect as movements should be done deliberately and not quickly.

Correct Answer: B

Rationale: Increased urine output is the correct assessment finding that indicates the client is responding to treatment for dehydration. When a client is dehydrated, their urine output tends to decrease as the body tries to conserve fluids. Therefore, an increase in urine output suggests that the client's hydration status is improving. Dry mucous membranes (Choice A) are a sign of dehydration and would not indicate a positive response to treatment. Decreased heart rate (Choice C) and elevated blood pressure (Choice D) are not specific indicators of hydration status in a client with dehydration.

Correct Answer: B

Rationale: The correct answer is B. Tightening the abdominal muscles before moving helps protect the back by providing core support. Keeping the legs straight (choice C) is incorrect as bending the legs is recommended to provide a stable base and prevent strain on the back. Twisting at the waist (choice D) while moving can cause back injury due to the strain on the spine. Placing the bed in the lowest position (choice A) is not directly related to preventing back strain during client repositioning, although it may be necessary for other reasons.

Correct Answer: A

Rationale: The correct action for the nurse to take when caring for a client with Clostridium difficile in contact isolation is to wear gloves when changing the client's gown. Clostridium difficile is highly transmissible, and wearing gloves helps prevent the spread of the infection. Using hand sanitizer after contact with the client (Choice B) is not enough to prevent the transmission of C. difficile, as the spores can persist and spread. Wearing a mask when entering the client's room (Choice C) is not necessary for C. difficile transmission, which primarily occurs through contact with contaminated surfaces. Cleaning the room with a disinfectant spray (Choice D) is important, but wearing gloves during direct care is the priority to prevent the nurse from acquiring and spreading the infection.