A nurse in the emergency department is caring for a client who had a seizure and became unresponsive after stating they had a sudden, severe headache. The client's vital signs are as follows: blood pressure of 198/110 mm Hg, pulse of 82/min, respirations of 24/min, and a temperature of 38.2° C (100.8° F). Which of the following neurological disorders should the nurse suspect?

Choice A: RBC count The red blood cell (RBC) count is not typically decreased by hemodialysis. Hemodialysis does not remove cells from the blood. However, patients with chronic kidney disease often have anemia, which is a low RBC count, due to a decrease in the production of erythropoietin by the kidneys. Erythropoietin is a hormone that stimulates the bone marrow to produce RBCs. Anemia in these patients is treated with erythropoiesis-stimulating agents, not dialysis.

Choice B: Protein Protein levels are not directly affected by hemodialysis. However, patients on hemodialysis may have lower protein levels due to dietary restrictions or protein loss during the treatment. It is important for patients to manage their protein intake to prevent malnutrition and maintain overall health.

Choice C: Potassium Potassium levels are expected to decrease following hemodialysis. Potassium is an electrolyte that is normally filtered out by the kidneys. In patients with kidney failure, potassium levels can build up in the blood and cause serious heart problems. Hemodialysis removes excess potassium from the blood, which helps to prevent complications such as cardiac arrhythmia. The normal range for serum potassium is 3.5 to 5.0 mmol/L. After a hemodialysis treatment, a nurse should expect to find a decrease in potassium levels in the laboratory data of a client. This is because hemodialysis effectively removes excess potassium, which can accumulate in the blood due to reduced kidney function. Maintaining proper potassium levels is crucial for preventing heart complications in patients with kidney failure.

Choice D: Calcium Calcium levels are not typically decreased by hemodialysis. In fact, calcium levels can be affected by the dialysate used during hemodialysis. Some dialysates contain calcium, and this can actually increase the patient’s blood calcium levels. Patients with kidney failure may also have secondary hyperparathyroidism, which affects calcium levels, and they may be treated with calcium supplements or vitamin D analogs to manage their calcium levels.

Choice A reason: Occasional bubbling in the water-seal chamber can indicate an air leak, which is not necessarily a sign of lung re-expansion. It could suggest that the lung has not fully re-expanded or that there is a persistent air leak.

Choice B reason: While the absence of pleuritic chest pain is a positive sign, it is not a definitive indicator of lung re-expansion. Pleuritic chest pain can subside even if the lung has not fully re-expanded.

Choice C reason: No tidaling in the water-seal chamber is a strong indicator that the lung has re-expanded. When the lung is fully expanded, it presses against the chest wall, eliminating the space where air could collect and thus stopping the water level from fluctuating with respiration.

Choice D reason: An oxygen saturation of 95% is within normal limits and suggests adequate oxygenation, but it does not specifically indicate lung re-expansion. Oxygen saturation can be maintained with supplemental oxygen or other supportive measures even if the lung has not fully re-expanded.