Correct Answer: C

Rationale: The correct answer is C because placing a clean dressing over the saturated one helps maintain wound integrity and prevents further tissue damage. Choice A is incorrect as applying direct pressure to the wound is correct for controlling bleeding but not for dressing changes. Choice B is incorrect because removing dressings may disrupt wound healing and increase the risk of infection. Choice D is incorrect since applying alcohol to the wound can cause further irritation and damage to the tissues.

Correct Answer: D

Rationale: The correct answer is D: Chronic conditions. Chronic conditions, such as diabetes or immune suppression, can compromise the immune system, making individuals more susceptible to infections. Frequent handwashing (Choice A) is actually a protective measure against infections. Increased mobility (Choice B) and high blood pressure (Choice C) are not directly associated with an increased risk for infections.

Correct Answer: B

Rationale: The ventrogluteal site is the preferred site for intramuscular injections to avoid injury to nerves or blood vessels. The deltoid site is commonly used for vaccines but has a higher risk of hitting the radial nerve. The rectus femoris site is not typically recommended for intramuscular injections. The dorsogluteal site is contraindicated due to the proximity to the sciatic nerve and major blood vessels.

Correct Answer: A

Rationale: Corrected Rationale: The nurse should instruct the client to use pursed-lip breathing during activities to help improve oxygenation. Pursed-lip breathing can keep the airways open longer, facilitating better oxygen exchange and making it easier to exhale carbon dioxide. Choice B is incorrect as physical activity, within the client's limitations, is beneficial for maintaining overall health. Choice C is incorrect as weight-bearing exercises are important for bone health but not directly related to improving oxygenation in COPD. Choice D is incorrect as using a humidifier while sleeping can help with moisture in the airways but does not directly impact oxygenation in COPD.

Correct Answer: C

Rationale: The correct answer is C: 'Use cotton fabrics when oxygen is in use.' When a client is on oxygen therapy, it is essential to use cotton fabrics to reduce the risk of static electricity, which can ignite in the presence of oxygen. Choices A, B, and D are incorrect. Removing the oxygen tubing during meals is not necessary as long as proper precautions are taken to avoid tripping hazards. Synthetic fabrics should be avoided while using oxygen therapy to prevent static electricity buildup. Increasing oxygen flow during physical activity should be done according to the healthcare provider's instructions, not indiscriminately.