1. A client diagnosed with pneumonia states difficulty in producing a productive cough. The nurse should instruct the client to complete which of the following to maintain airway clearance? decrease fluid intake B. pursed-lip breathing technique splint the chest when coughing D. deliver oxygen via nasal cannula 2. A client requiring prolonged mechanical ventilation has the following arterial blood gas (ABG) results: pH: 7.49; PaO2: 85 mm Hg; PaCO2: 30 mm Hg; HCO3: 25 mEq/L. The nurse interprets these results as metabolic acidosis. B. metabolic alkalosis. respiratory acidosis. D. respiratory alkalosis. A client is diagnosed with angina pectoris. The nurse has instructed the client on the proper use of a nitroglycerin sublingual. The nurse also informs the client that which of the following adverse effects may be caused by this medication? flushing, dizziness, headache, and pedal edema B. headache, hypotension, dizziness, and flushing