A nurse is checking a client's ventilator settings. The nurse should understand that positive end- expiratory pressure has which of the following purposes?
To deliver a set tidal volume
To provide positive airway pressure during inspiration
To control the rate of ventilations
To prevent alveolar collapse
The Correct Answer is D
Positive end-expiratory pressure (PEEP) is a mode of mechanical ventilation that maintains a positive pressure in the airways at the end of expiration, preventing alveolar collapse and improving oxygenation. PEEP does not affect tidal volume, inspiratory pressure, or ventilation rate, which are determined by other ventilator settings.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A 2-g sodium diet means limiting sodium intake to no more than 2000 mg per day. Sodium is found in salt and many processed foods, such as canned vegetables, soups, sauces, and baked goods. Sodium can cause fluid retention and worsen heart failure symptoms, such as shortness of breath, swelling, and fatigue. Therefore, the client should avoid adding salt or salt substitutes (such as baking soda) to their foods and choose fresh or frozen vegetables over canned ones. Lemon juice is a low-sodium alternative that can add flavor to foods without increasing sodium intake.
Correct Answer is A
Explanation
Protamine sulfate is an antidote for heparin overdose and can reverse its anticoagulant effects. It should be available at the bedside in case of bleeding complications or heparin toxicity. The nurse should monitor the client's activated partial thromboplastin time (aPTT) and adjust the heparin infusion rate accordingly.
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