A client with Addison's disease started taking hydrocortisone in a divided daily dose last week. It is most important for the nurse to monitor which serum laboratory value?

Choice A reason: A cerebrovascular accident (CVA), commonly known as a stroke, occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients. Although a severe headache might be a symptom of a stroke, it does not typically present with fever, nuchal rigidity, and a petechial rash, which are more indicative of an infection or inflammatory process.

Choice B reason: Meningococcal meningitis is a bacterial infection that causes inflammation of the membranes covering the brain and spinal cord. Symptoms often include a severe headache, fever, neck stiffness (nuchal rigidity), and a petechial rash, which is a distinguishing feature. This condition is a medical emergency and requires prompt antibiotic treatment to prevent serious complications or death.

Choice C reason: Intracerebral hemorrhage is bleeding within the brain tissue itself, which can be caused by various factors such as hypertension, aneurysms, or trauma. While it can cause a severe headache and neurological symptoms, it does not typically present with fever, nuchal rigidity, and a petechial rash, which suggest an infectious etiology rather than a hemorrhagic one.

Choice D reason: Rocky Mountain spotted fever is a tick-borne illness caused by the bacterium Rickettsia rickettsii. It can present with fever, headache, and a rash, but the rash is typically more generalized and not petechial. Additionally, the presence of nuchal rigidity and severe headache are more characteristic of meningitis rather than Rocky Mountain spotted fever.

Choice A reason: A complete blood count (CBC) is the most relevant laboratory value to review for a client with iron deficiency anemia who reports increased fatigue. The CBC will provide important information about the levels of red blood cells, hemoglobin, and hematocrit, which are directly affected by iron deficiency. Monitoring these values will help determine if the client’s anemia is worsening or if the iron supplements are not effectively improving the blood count.

Choice B reason: The platelet count is part of a CBC but is not directly related to the symptoms of fatigue in iron deficiency anemia. While platelet levels are important for assessing clotting function, they do not provide the necessary information about red blood cell levels or hemoglobin concentration that are central to diagnosing and managing anemia.

Choice C reason: Serum electrolytes are important to monitor for overall health and hydration status, but they are not specifically related to the client’s anemia or the symptom of fatigue. Electrolyte imbalances typically do not cause fatigue related to anemia, so this is not the primary laboratory value to review in this context.

Choice D reason: Liver enzymes are important for assessing liver function and potential liver damage, but they are not directly related to iron deficiency anemia or the symptom of fatigue. While it is important to monitor liver health, especially if the client is on medications that affect the liver, the complete blood count is more relevant to the symptoms described.