Correct Answer: C

Rationale: When replacing a client's surgical dressing, the nurse should use sterile gloves to remove the old dressing. Sterile technique is essential to prevent introducing infection to the wound. Choice A is incorrect because clean gloves are not sufficient; sterile gloves are necessary to maintain asepsis. Choice B, washing hands, is an important step before and after the procedure to maintain hand hygiene, but sterile gloves are required during the dressing change. Choice D is incorrect because a new dressing should only be applied after the old one has been removed to prevent contamination and ensure proper wound care.

Correct Answer: D

Rationale: Information about transmission-based precautions is essential for infection control and continuity of care.

Correct Answer: D

Rationale: The presence of blood in the urine in a client with a urinary tract infection (UTI) may indicate a more severe infection, such as pyelonephritis, or complications like kidney stones or bladder cancer. Therefore, this finding should be reported immediately for further evaluation and management. Cloudy urine, burning sensation during urination, and foul-smelling urine are common symptoms of UTI and may not necessarily signify an urgent need for immediate reporting compared to the presence of blood in the urine.

Correct Answer: B

Rationale: The correct answer is B. Petroleum jelly is flammable and should not be used with oxygen therapy due to the risk of fire. The client should avoid using petroleum-based products around oxygen equipment. Choices A, C, and D are all appropriate statements for a client with COPD receiving home oxygen therapy. Keeping the oxygen tank upright ensures proper oxygen flow, avoiding smoking or exposure to smoke helps prevent respiratory aggravation, and knowing to seek medical help promptly for breathing difficulties is essential for managing COPD effectively.

Correct Answer: A

Rationale: The correct answer is to regulate O2 via nasal cannula no more than 6L. This flow rate is generally recommended to ensure adequate oxygen delivery without causing discomfort or potential harm to the patient. Choices B, C, and D are incorrect as they suggest flow rates that are either too low (2L, 4L) or too high (8L). A flow rate of 2L might not provide sufficient oxygen, while 4L could be inadequate for some patients. On the other hand, a flow rate of 8L could be excessive and potentially harmful, leading to complications like oxygen toxicity. Therefore, the optimal recommendation is to regulate O2 via nasal cannula at a maximum of 6L to balance effectiveness and safety.