Correct Answer: A

Rationale: The correct answer is A: Cotton balls. Cotton balls are not suitable for tracheostomy care due to the risk of lint and contamination. When performing tracheostomy care, sterile supplies such as sterile gloves, a suction catheter, and tracheostomy tubes are essential. Sterile gloves are needed to maintain asepsis, a suction catheter is necessary for airway clearance, and tracheostomy tubes are crucial for maintaining a patent airway. Cotton balls should be avoided to prevent introducing lint or fibers into the tracheostomy site, which can lead to infection or airway obstruction.

Correct Answer: A

Rationale: The correct answer is to avoid measuring the client's temperature rectally. Rectal temperatures can cause bleeding in clients with low platelet counts. It is crucial to avoid invasive methods that could increase the risk of bleeding or discomfort. Choice B, counting the radial pulse, is not directly related to the risk of bleeding in a client with low platelet count. Choice C, counting respirations discreetly, is important for accuracy but is not the priority when considering the risk of bleeding. Choice D, letting the client rest before measuring blood pressure, is beneficial but is not the priority in preventing potential harm due to low platelet counts.

Correct Answer: D

Rationale: The priority action for the nurse is to address the client's immediate physiological need for comfort and pain relief during the dressing change. Administering pain medication 45 minutes before the procedure can help alleviate the pain experienced by the client. Encouraging relaxation techniques (choice A) is beneficial but may not provide sufficient pain relief during the dressing change. Educating about the importance of pain management (choice B) is relevant but does not address the immediate need for pain relief. Assisting the client to a comfortable position (choice C) is helpful but does not directly address the client's pain concern during the dressing change. Administering pain medication is the most direct and effective intervention to ensure optimal client comfort and compliance with necessary procedures.

Correct Answer: A

Rationale: The correct answer is A. Obtaining cotton balls for tracheostomy care is not recommended due to the risk of fiber contamination. Sterile gauze should be used instead. Choice B, using a sterile water bottle, is a correct and appropriate action for tracheostomy care to maintain cleanliness. Choice C, checking the suction equipment, is also a necessary step to ensure it is functioning properly for the procedure. Choice D, wearing a sterile gown, is a standard precaution to maintain a sterile environment during tracheostomy care.

Correct Answer: C

Rationale: Urticaria, also known as hives, is a common manifestation of a mild allergic reaction. Ptosis refers to drooping of the eyelid and is not typically associated with allergic reactions. Hematuria indicates blood in the urine and is not a typical allergic reaction symptom. Nausea can occur with various conditions, but it is not a specific manifestation of a mild allergic reaction.