Correct Answer: A

Rationale: Encouraging the client to use an incentive spirometer regularly is crucial in preventing postoperative complications after abdominal surgery. This action helps prevent atelectasis by promoting lung expansion and improving air exchange in the lungs, reducing the risk of respiratory complications. Assisting the client in ambulating early is important for preventing issues like deep vein thrombosis but may not directly address respiratory concerns postoperatively. Positioning the client in high Fowler's position can help with respiratory distress but is not as specific to preventing postoperative respiratory complications as using an incentive spirometer. While encouraging the client to cough and deep breathe is generally beneficial for lung expansion, using an incentive spirometer is more effective and targeted in preventing atelectasis after abdominal surgery.

Correct Answer: A

Rationale: The correct answer is A: Narrowed arterial lumen. Arterial bruits are abnormal sounds caused by turbulent blood flow through narrowed or occluded arteries. This turbulent flow creates a blowing sound, which is heard as an arterial bruit. Distended jugular veins (choice B) are typically associated with venous issues, not arterial abnormalities. Impaired ventricular contraction (choice C) and asynchronous closure of the aortic and pulmonic valve (choice D) are not directly related to the audible vascular sound described in the scenario.

Correct Answer: A

Rationale: When drawing medication from a vial, especially for controlled substances like opioids, any wastage must be witnessed by another healthcare professional to ensure accuracy, prevent diversion, and maintain safety standards. This process is crucial for proper documentation and accountability. Recording the amount drawn on the Medication Administration Record (MAR) is important for tracking administered doses and preventing errors. Disposing of the remaining medication in a sharps container is not recommended as it does not address proper wastage documentation. Administering the entire vial of medication just to avoid wastage is inappropriate and can lead to potential harm or overdose in the patient.

Correct Answer: D

Rationale: Maintaining sterile technique when handling a central venous catheter is crucial in preventing infections. This action helps minimize the introduction of pathogens into the catheter site, reducing the risk of contamination and subsequent infection. Changing the catheter dressing every 72 hours, while important, does not directly address the prevention of infection at the insertion site. Flushing the catheter with heparin solution daily helps prevent occlusion but does not primarily focus on infection prevention. Ensuring the catheter is clamped when not in use is essential for preventing air embolism but does not directly relate to infection control.

Correct Answer: A

Rationale: Using an open posture is crucial when demonstrating empathy to a client. This body language conveys openness, understanding, and a willingness to listen, creating a safe space for the client to express themselves. Establishing and maintaining eye contact is also important as it fosters a sense of connection and validation for the client. Writing down what the client says is essential for accurate documentation and memory but does not directly contribute to demonstrating empathic presence. Nodding in agreement with the client throughout the conversation may show attentiveness, but it does not necessarily reflect empathy or active listening as it could be misinterpreted as simply agreeing with what is being said.