The nurse is assessing internal variables that influence a client's health care beliefs and practices. As part of this assessment, the nurse should consider the client's:

A. This principle emphasizes the duty to do no harm. In the case of the client undergoing chemotherapy and experiencing severe side effects that significantly reduce their quality of life, the principle of nonmaleficence comes into question. Chemotherapy, while aimed at treating cancer, often causes substantial side effects that can impact a patient's well-being

BThis principle relates to fairness and equality in the distribution of resources, treatments, and outcomes. In the context of cancer treatment, justice could be considered in terms of ensuring equitable access to chemotherapy and supportive care, regardless of socioeconomic status or other factors.

C Fidelity refers to the duty to be faithful, keep promises, and maintain trust in the patient-nurse relationship. In this context, fidelity would involve the nurse advocating for the client's best interests, including addressing their concerns about the severe side effects of chemotherapy and their impact on quality of life.

D. Autonomy refers to respecting the right of the patient to make their own decisions about their care and treatment. In the context of cancer treatment, autonomy would involve ensuring that the client has sufficient information about their condition, prognosis, treatment options, and potential side effects to make informed decisions. However, autonomy may also be challenged when severe side effects significantly impact the client's ability to maintain their desired quality of life despite ongoing treatment.

C. Delirium is often reversible once the underlying cause is identified and treated (e.g., correcting electrolyte imbalances, managing infections, discontinuing medications contributing to delirium). With appropriate intervention, the mental status can improve, and the individual can return to their baseline cognitive function.

A. Dementia, on the other hand, is a chronic, progressive syndrome that primarily affects memory, thinking, behavior, and the ability to perform everyday activities. It does not typically cause acute changes in consciousness.

B. Memory impairment is a hallmark feature of dementia, especially in the early stages. In contrast, delirium primarily affects attention, awareness, and cognition acutely, with memory impairment being variable and not a defining feature.

D. Delirium develops rapidly, often over hours to days, in response to an acute medical condition, medication change, or other factors. It is characterized by a fluctuating course and can resolve once the underlying cause is managed.