Correct Answer: C

Rationale: The correct first action for a client with a chest tube experiencing increased shortness of breath is to elevate the head of the bed to 30 degrees. This position promotes lung expansion, improves oxygenation, and can help relieve shortness of breath. Checking for kinks in the chest tube tubing would be important but not the first action in this situation. Assessing the client's lung sounds is also important but not the initial priority. Preparing for chest tube replacement is not indicated based solely on the client's complaint of increased shortness of breath.

Correct Answer: A

Rationale: An allergy to shellfish often indicates an allergy to iodine, which is used in contrast dyes for CT scans. This poses a significant risk of an allergic reaction during the procedure. The nurse must ensure appropriate precautions or alternative imaging are considered. Choices B, C, and D are not directly contraindicated for a CT scan with contrast. Smoking history, metformin use, and controlled hypertension do not typically impact the safety or feasibility of the procedure.

Correct Answer: B

Rationale: The correct recommendation for a client with chronic venous insufficiency to prevent complications is to wear compression stockings. Compression stockings help improve venous circulation and prevent the worsening of symptoms. While elevating the legs is also beneficial, the priority intervention in preventing complications is wearing compression stockings. Using a heating pad on the legs can actually worsen the condition by dilating blood vessels, and massaging the legs daily can potentially damage fragile skin in clients with chronic venous insufficiency.

Correct Answer: A

Rationale: In a client receiving continuous ambulatory peritoneal dialysis (CAPD) who has lost weight and exhibits increasing edema, the nurse should prioritize evaluating the patency of the arteriovenous (AV) graft. This assessment is crucial to determine if hemodialysis can be resumed, addressing the client's presenting issues effectively. Instructing the client to continue a fluid-restricted diet (choice B) may not address the underlying issue related to the CAPD. Recommending support stockings for venous return (choice C) is not directly relevant to the situation described. Monitoring the client's serum albumin levels (choice D) may be important but does not directly address the immediate concern of weight loss and increasing edema in a CAPD client.

Correct Answer: A

Rationale: Blurry vision in clients with type 1 diabetes may indicate hyperglycemia, which requires prompt assessment of recent blood glucose levels to determine the cause and appropriate intervention. Checking the client's hemoglobin A1C level (Choice B) is useful for assessing long-term glucose control, not for immediate management of blurry vision. Monitoring blood pressure (Choice C) is important in diabetes care but is not the most crucial assessment when blurry vision is reported. Examining the client's feet for signs of neuropathy (Choice D) is important in diabetic foot care but is not the priority when dealing with blurry vision.