Correct Answer: B

Rationale: The correct way to manage contaminated dressings is to place them in plastic bags for proper disposal. This helps prevent the spread of infection. Choice A is incorrect because saving part of the dressing is not a recommended practice. Choice C is not directly related to managing contaminated dressings. Choice D is incorrect as wrapping the used dressing in toilet tissue is not the appropriate way to dispose of contaminated dressings.

Correct Answer: A

Rationale: The correct answer is to maintain the patient's oxygen saturation above 90% when caring for a patient with COPD. In COPD, impaired gas exchange leads to decreased oxygen levels in the blood. By ensuring oxygen saturation remains above 90%, healthcare providers can prevent hypoxia and its complications. Administering bronchodilators as prescribed (Choice B) is an important intervention in managing COPD symptoms, but it is not the primary goal. Improving the patient's nutritional intake (Choice C) and encouraging the patient to limit physical activity (Choice D) are also essential aspects of COPD management, but they are not the primary goal when caring for a patient with this condition.

Correct Answer: A

Rationale: The correct answer is to administer a bronchodilator as prescribed. This intervention is the priority for a patient with asthma experiencing shortness of breath as it helps relax the airways, making breathing easier. Encouraging the use of an incentive spirometer (Choice B) is beneficial for lung expansion but not the priority in this acute situation. Placing the patient in a high Fowler's position (Choice C) can also help with breathing but is not as immediate as administering a bronchodilator. While monitoring the patient's oxygen saturation closely (Choice D) is important, the immediate action to address the breathing difficulty is administering a bronchodilator.

Correct Answer: D

Rationale: The correct answer is D: Clean hands thoroughly before and after patient contact. Hand hygiene is crucial for maintaining medical asepsis in a healthcare setting as it helps prevent the spread of infections between patients and healthcare workers. Choice A is incorrect because instruments should be sterilized regularly, not just when visibly contaminated. Choice B is incorrect as sterile gloves are not required for all patient interactions, only for specific procedures. Choice C is incorrect because patient areas should be disinfected regularly throughout the day, not just at the end of the day.

Correct Answer: A

Rationale: The most important action for the nurse to take when caring for a patient on contact precautions is to wear gloves when entering the patient's room. This is crucial in preventing the spread of infection from the patient to the healthcare provider and vice versa. Placing the patient in a private room may be necessary for airborne precautions but is not specifically related to contact precautions. Using a dedicated blood pressure cuff for the patient is important for preventing cross-contamination but is not the most critical action. Disposing of equipment in a biohazard bag is a standard procedure but is not the most important action in this scenario.