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
Weight gain 1.1 kg (2.4 lb) in 24 hours indicates fluid retention and possible volume overload, which can worsen kidney function and cause complications such as hypertension, pulmonary edema, and heart failure. The nurse should report this finding to the provider and monitor the client's vital signs, fluid intake and output, and electrolyte levels.
Creatinine 0.8 mL/dL is within the normal range for adults and does not indicate kidney impairment. Peripheral pulses 2+ bilaterally are normal and do not suggest any vascular problems. Urine specific gravity 1.045 is slightly high but not abnormal for a client with acute kidney failure, as it reflects the reduced ability of the kidneys to dilute urine.
Correct Answer is B
Explanation
To assess a client for a positive Chvostek’s sign, the nurse should tap gently on the cheek, specifically two centimeters in front of the ear, over the facial nerve (also known as CN VII). This test is used to check for hypocalcemia, a condition that can lead to tetany, which is the involuntary contraction of muscles. A twitch of the facial muscles in response to this tapping indicates a positive Chvostek’s sign. This is particularly relevant following a thyroidectomy, as the procedure can indirectly affect the parathyroid glands, potentially leading to hypocalcemia
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