Correct Answer: C

Rationale: Increasing humidity in the client's room can help liquefy thick secretions and facilitate easier airway clearance in a client with a tracheostomy. Encouraging the client to drink plenty of fluids can be beneficial for overall hydration but may not directly address thick secretions. Deep suctioning every 2 to 4 hours can be harmful and cause trauma to the airway lining. Administering a mucolytic agent should be done under the healthcare provider's order and may not be the initial intervention for thick secretions.

Correct Answer: C

Rationale: When the PR interval is prolonged, it signifies an increased conduction time from the SA node through the AV junction. This finding is characteristic of a first-degree heart block where there is a delay in the electrical conduction at the level of the AV node. Choices A, B, and D are incorrect as they do not accurately reflect the significance of a prolonged PR interval.

Correct Answer: B

Rationale: Administering IV fluids as prescribed is the priority intervention in a client with a blood glucose level of 640 mg/dl and unresponsiveness. Severe hyperglycemia can lead to dehydration and electrolyte imbalances, and administering IV fluids can help manage hyperglycemia and prevent further complications. Administering dextrose IV push (Choice A) can exacerbate hyperglycemia in this scenario. Checking the client's blood glucose level (Choice C) is important but not the immediate priority when the client is unresponsive. Immediate dialysis (Choice D) is not indicated as the first intervention for hyperglycemia.

Correct Answer: B

Rationale: Verifying whether the client has an executed living will is crucial to ensuring that his treatment preferences are followed. In this critical situation, knowing the client's wishes regarding medical interventions is paramount. Options A, C, and D are not the highest priority as they do not directly address the immediate need to determine the client's treatment preferences.

Correct Answer: B

Rationale: The correct answer is B. In this scenario, the client is experiencing abdominal pain after a left femoral angioplasty and stent, with signs of potential complications such as a swollen abdomen, tenderness at the groin access site, and unequal peripheral pulses. The client's vital signs are also elevated, indicating a worsening condition. Given these findings, the immediate evaluation by the surgeon is crucial to assess for serious complications like internal bleeding or ischemia. Choice A is incorrect as the focus should be on the urgent need for surgical evaluation rather than lung sounds and oxygen saturation. Choice C is irrelevant to the immediate management of the client's current situation. Choice D, while providing background information, is not essential for the urgent intervention required in this case.