A nurse is planning care for a client who has the communicable disease pertussis. Which of the following isolation guidelines should the nurse include in the plan?

A) Evaluate the client's understanding of diabetes management: While it is important to assess the client’s understanding of diabetes management to prevent future hyperglycemic episodes, this is not the immediate priority. The client's current hyperglycemic-hyperosmolar state needs urgent intervention to stabilize their condition before educational measures can be effective.

B) Administer potassium supplements: Potassium supplementation may be necessary, especially if the client is hypokalemic, but it is not the first action. Electrolyte levels should be monitored and corrected as part of the treatment, but the initial priority is to address the severe dehydration and hyperglycemia.

C) Initiate a continuous infusion of 0.9% sodium chloride: This is the most critical first step. Clients in a hyperglycemic-hyperosmolar state are typically severely dehydrated due to osmotic diuresis. Initiating a continuous infusion of isotonic saline helps to restore intravascular volume, improve perfusion, and stabilize hemodynamics, which is essential before addressing other issues.

D) Check for improvements in the client's level of consciousness: Monitoring the client's level of consciousness is important as it provides information about their neurological status and response to treatment. However, this is a subsequent action after initiating fluid resuscitation, which directly addresses the immediate life-threatening aspects of the hyperglycemic-hyperosmolar state.

A) Metabolic acidosis: In metabolic acidosis, you would expect a low pH (acidosis) with a low bicarbonate (HCO3-) level. However, the given bicarbonate level is within the normal range (22-26 mEq/L), which indicates the acidosis is not metabolic in origin.

B) Metabolic alkalosis: Metabolic alkalosis would present with a high pH (alkalosis) and an elevated bicarbonate (HCO3-) level. The pH in this case is low, indicating acidosis, and the bicarbonate level is normal, ruling out metabolic alkalosis.

C) Respiratory alkalosis: In respiratory alkalosis, you would see a high pH (alkalosis) and a low PaCO2 due to hyperventilation. The given pH is low, indicating acidosis, and the PaCO2 is elevated, which is inconsistent with respiratory alkalosis.

D) Respiratory acidosis: Respiratory acidosis is characterized by a low pH (acidosis) and an elevated PaCO2 due to hypoventilation or impaired gas exchange. The client's ABG results show a low pH (7.2), a normal bicarbonate level (26 mEq/L), and an elevated PaCO2 (52 mm Hg), indicating the client is experiencing respiratory acidosis.