Correct Answer: D

Rationale: Non-maleficence is the ethical principle that emphasizes the obligation to avoid causing harm to patients. In this scenario, the ER nurse clarifies the doctor's prescription to ensure the correct dosage of the pain medication based on the pain scale assessment and the patient's age. By doing so, the nurse is ensuring that the medication is safe and effective for the patient, thus adhering to the principle of non-maleficence. This action demonstrates the nurse's commitment to preventing harm and promoting the well-being of the patient through proper medication management.

Correct Answer: D

Rationale: A hard mass and a reddened area on one breast are key clinical signs that confirm the diagnosis of mastitis. Mastitis is an infection of the breast tissue that often presents with localized redness, warmth, and swelling of the breast. The presence of a hard mass along with the other symptoms suggests inflammation and infection within the breast tissue. In contrast, the other findings such as enlarged glands in the axilla, normal temperature, and engorged breasts are not specific findings for mastitis and may be present in other conditions. Therefore, the presence of a hard mass and reddened area on one breast is the additional finding that strongly confirms the diagnosis of mastitis in this case.

Correct Answer: C

Rationale: Providing emotional support and addressing psychosocial needs demonstrates palliative care principles when caring for a patient experiencing end-of-life symptoms. Palliative care focuses on holistic care that encompasses physical, emotional, and spiritual support for patients and their families during times of serious illness. By addressing emotional needs and providing support, the nurse helps improve the patient's quality of life and comfort during this difficult time. This approach goes beyond just managing physical symptoms and pain, recognizing the importance of supporting the patient's overall well-being. Encouraging the patient to make decisions about life-sustaining treatments is also an important aspect of palliative care, but providing emotional support and addressing psychosocial needs is crucial in palliative care practice.

Correct Answer: D

Rationale: Arterial blood gases (ABGs) do not directly assess the client's electrolyte and fluid balance. ABGs primarily evaluate the client's acid-base balance and oxygenation status by measuring levels of pH, partial pressure of carbon dioxide (PCO2), and bicarbonate (HCO3) in the arterial blood. While ABGs can provide some information about blood parameters, such as oxygen saturation, they do not comprehensively assess electrolyte levels or fluid balance. To specifically assess electrolytes and fluid balance, additional tests like basic metabolic panels or comprehensive metabolic panels would be required.

Correct Answer: A

Rationale: When a nurse involves well-being in her definition of health, it indicates a holistic approach that considers not only physical health but also emotional, mental, and social aspects of well-being. In the context of a family confronting the imminent death of a family member, the primary concern of the nurse would be to focus on reinforcing the need for the whole family to adapt to the impending death. This involves providing emotional support, facilitating communication, addressing coping mechanisms, and assisting the family in coming to terms with the situation. By emphasizing the importance of the whole family adapting to the imminent death, the nurse can help promote holistic well-being for the family during this challenging time.