The laboratory findings for a client with chronic kidney disease (CKD) include elevated blood urea nitrogen (BUN) and serum creatinine levels. The client reports feeling fatigued and is unable to concentrate during the morning assessments. Based on these findings, which action should the nurse implement?

A. Acetaminophen 350 mg PO every 6 hours for temperature greater than 101°F (38.3°C): While controlling fever is important, it is not as urgent as ensuring adequate oxygenation and
monitoring of vital signs. Fever can be managed once the client's respiratory status is stabilized.

B. Place the client on a cardiorespiratory monitor

The correct answer is B. Placing the client on a cardiorespiratory monitor is crucial to continuously monitor vital signs, including heart rate, respiratory rate, oxygen saturation, and cardiac rhythm. Given the client's reported difficulty breathing, this order takes priority to assess the severity of respiratory distress and ensure timely intervention if needed.

C. Start oxygen 3 L/minute via nasal cannula

The correct answer is C. Initiating oxygen therapy is essential for improving oxygenation and respiratory function, especially in a patient with reported difficulty breathing. Administering oxygen can help alleviate hypoxemia and reduce the workload on the respiratory system. This intervention takes precedence in addressing the client's acute respiratory symptoms.
D. Chest x-ray: A chest x-ray is important for further evaluation of the client's respiratory status, but it is not as immediate as placing the client on a cardiorespiratory monitor and initiating oxygen therapy.
E. Run 0.9% sodium chloride IV infusion at 150 mL/hour: Initiating IV fluids is important, but it is not as urgent as addressing the client's respiratory distress and oxygenation needs.
F. Start a peripheral IV: Starting a peripheral IV is necessary for administering medications and fluids, but it can be done after placing the client on a monitor and starting oxygen therapy.

G. Sputum culture: While obtaining a sputum culture is important for identifying the causative organism of the respiratory infection, it is not as urgent as addressing the client's immediate respiratory distress.
H. NPO: NPO status may be necessary for certain diagnostic tests or procedures, but it does not take priority over addressing the client's respiratory distress and oxygenation needs.

A. Histamine 2-receptor antagonists do not directly neutralize hydrochloric acid (HCl) in the stomach. Instead, they reduce acid secretion by blocking the histamine 2 receptors on parietal cells, thereby decreasing the production of gastric acid.

B. This describes the mechanism of action of anticholinergic medications, not histamine 2- receptor antagonists.

C. Histamine 2-receptor antagonists do not have antimicrobial properties and are not used to destroy microorganisms causing stomach inflammation. They primarily target acid secretion.

D. This is the correct purpose of histamine 2-receptor antagonists. They work by blocking the action of histamine on parietal cells in the stomach, leading to a reduction in the secretion of hydrochloric acid. This helps in the management of peptic ulcer disease and other conditions related to excessive gastric acid secretion.