Correct Answer: D

Rationale: The nurse's actions exemplify negligence. Negligence is a failure to provide reasonable care that results in harm to a patient. In this scenario, the nurse failed to unclamp the patient's indwelling urinary catheter as instructed by the healthcare provider. This failure to follow proper procedure led to the patient developing a urinary tract infection, which could have been prevented if the nurse had acted with reasonable care. This action does not meet the criteria for malpractice, assault, or battery as those involve intentional harm or professional misconduct, whereas negligence involves a lack of appropriate care or attention.

Correct Answer: B

Rationale: Creating a conducive time and place for the teachings is crucial during the implementation process to ensure better assimilation by the staff. By choosing a suitable time that does not clash with other responsibilities and providing a comfortable environment for learning, the nurse can enhance the staff's understanding and retention of the teachings. This approach helps in engaging the staff effectively and facilitating a productive learning experience.

Correct Answer: D

Rationale: When giving health teaching to the mother on how to manage the patient at home, emphasizing the need for emotional support is crucial. Taking care of a patient at home can be emotionally taxing, and the mother needs to be aware of the importance of providing emotional support to the patient. This can greatly impact the patient's overall well-being and recovery. By emphasizing the need for emotional support, the mother can create a conducive and supportive environment for the patient to heal physically, mentally, and emotionally. It also helps foster a sense of connection and positivity, which is beneficial for the patient's overall health outcomes.

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: B

Rationale: T cell exhaustion is a state of T cell dysfunction that arises during chronic viral infections or cancer. In the case of a chronic viral infection, the persistent exposure to viral antigens leads to continuous stimulation of CD8+ cytotoxic T cells. Over time, this sustained stimulation can lead to T cell exhaustion, characterized by the upregulation of inhibitory receptors, impaired effector functions, and reduced proliferative capacity. As a result, despite the elevated levels of CD8+ T cells in the blood, their function may be compromised, ultimately impacting the immune response against the viral infection. In contrast, activation-induced cell death (AICD) may contribute to T cell loss during chronic infections but would not explain the persistently elevated CD8+ T cell levels. Thymic involution refers to the age-related decline in thymus function, which is not directly related to the observed increase in CD8+ T cells. Antigenic