Correct Answer: A

Rationale: Obtaining a sputum specimen early in the morning is the most appropriate time because secretions have accumulated overnight. This timing provides the best sample with the least contamination, leading to more accurate culture results and aiding in diagnosing respiratory infections effectively.

Correct Answer: D

Rationale: In Maslow's hierarchy of physiological needs, the most basic and immediate need is physiological survival, which includes the need for oxygen. Without oxygen, the body cannot survive for more than a few minutes, making it the highest priority physiological need according to Maslow's hierarchy.

Correct Answer: B

Rationale: In situations involving potential organ donation, the nurse's role is to provide support, listen to the family's concerns, and answer their questions truthfully. By doing so, the nurse can help facilitate an informed and respectful decision-making process for the grieving family.

Correct Answer: D

Rationale: In patients with COPD, the respiratory drive is often stimulated by low oxygen levels. Administering too much oxygen can inhibit this hypoxic drive, leading to respiratory depression and potential respiratory failure. Therefore, it is crucial to carefully regulate the oxygen therapy to prevent the inhibition of the respiratory hypoxic stimulus in COPD patients.

Correct Answer: D

Rationale: Failure to wear gloves during a bed bath can potentially introduce pathogens, compromising the sterile technique necessary for respiratory isolation. Proper hand hygiene and personal protective equipment are crucial to prevent the transmission of infectious agents in such settings.