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
TPN is a form of intravenous nutrition that provides glucose, amino acids, lipids, vitamins, minerals, and electrolytes to clients who cannot eat or absorb nutrients through their gastrointestinal tract. Discontinuing TPN abruptly can cause a sudden drop in blood glucose levels, leading to hypoglycemia .
Hyperglycemia can occur during TPN administration if the glucose infusion rate is too high or if the client has insulin resistance . Diarrhea can occur as a result of infection, bowel ischemia, or intolerance to enteral feeding . Hypertension can occur due to fluid overload, electrolyte imbalance, or vascular complications .
Correct Answer is C
Explanation
Sinus bradycardia is a type of cardiac arrhythmia characterized by a heart rate lower than 60 beats per minute in adults, or below the normal range for age in children. It can be diagnosed by an electrocardiogram (ECG) that shows regular P waves with constant morphology preceding every QRS complex, and positive in lead II.
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