The nurse is caring for an acutely ill client. What assessment finding should prompt the nurse to inform the health care provider that the client may be exhibiting signs of acute kidney injury (AKI)?

Choice A reason: The client's hemoglobin of 8.9 g/dL and hematocrit of 27% represent significant anemia. Combined with "darker" stools (suggestive of melena) and a history of colorectal cancer, these clinical manifestations strongly indicate chronic occult blood loss from a gastrointestinal malignancy, leading to iron-deficiency anemia and subsequent systemic hypoxia symptoms.

Choice B reason: Dehydration typically causes hemoconcentration, which results in elevated hemoglobin and hematocrit levels rather than the decreased values seen here. While dehydration can cause dizziness and fatigue, it does not explain the dark stools or the specific microcytic-type anemia clinical picture presented in this oncology context.

Choice C reason: Acute intestinal obstruction usually presents with severe abdominal pain, vomiting, obstipation, and abdominal distension. While a tumor can cause an obstruction, the primary symptoms reported here (fatigue, dizziness, and low blood counts) are classic indicators of chronic blood loss and anemia rather than an acute mechanical blockage.

Choice D reason: Attributing significant anemia and melena to normal aging is a diagnostic error. While fatigue can occur with age, a hemoglobin level of 8.9 g/dL is always pathological. Nurses must recognize these as "red flag" symptoms requiring urgent investigation for recurrence of malignancy or other serious physiological disturbances.

Choice A reason: Adalimumab (Humira) is a monoclonal antibody that is administered via subcutaneous injection, typically once every two weeks. It is not an oral medication taken daily with meals. This statement indicates a fundamental misunderstanding of the route and frequency of the drug administration, requiring immediate correction and retraining.

Choice B reason: Gastrointestinal upset, including nausea and vomiting, are documented side effects of many biologic therapies, including TNF inhibitors. While not the most common side effect (injection site reactions are more frequent), it is an accurate statement reflecting potential adverse reactions the client might experience during therapy.

Choice C reason: Adalimumab is an immunosuppressant that increases the risk of serious infections. Clients must be taught to avoid exposure to pathogens, which includes avoiding large crowds where viral or bacterial transmission is more likely. This statement demonstrates that the client correctly understands their increased susceptibility to illness while on this medication.

Choice D reason: Hand hygiene is a critical component of infection prevention for any immunocompromised patient. Regular handwashing, especially after contact with animals or being in public spaces, is a necessary behavioral modification. This statement shows that the client understands the practical steps needed to protect their health during treatment.