Chapter 67: Acute Respiratory Failure and Acute Respiratory Distress Syndrome Lewis: Medical-Surgical Nursing, 10th Edition Complete 2023 Quiz_ Answered.

1. Which diagnostic test will provide the nurse with the most specific information to evaluate the effectiveness of interventions for a patient with ventilatory failure? a. Chest x-ray b. O2 saturation c. Arterial blood gas analysis d. Central venous pressure monitoring ANS: C Arterial blood gas (ABG) analysis is most useful in this setting because ventilatory failure causes problems with CO2 retention, and ABGs provide information about the PaCO2 and pH. The other tests may also be done to help in assessing oxygenation or determining the cause of the patient’s ventilatory failure. DIF: Cognitive Level: Apply (application) REF: 1614 TOP: Nursing Process: Assessment MSC: NCLEX: Physiological Integrity 2. While caring for a patient who has been admitted with a pulmonary embolism, the nurse notes a change in the patient’s oxygen saturation (SpO2) from 94% to 88%. Which action should the nurse take? a. Suction the patient’s oropharynx. b. Increase the prescribed O2 flow rate. c. Instruct the patient to cough and deep breathe. d. Help the patient to sit in a more upright position. ANS: B Increasing O2 flow rate will usually improve O2 saturation in patients with ventilationperfusion mismatch, as occurs with pulmonary embolism. Because the problem is with perfusion, actions that improve ventilation, such as deep breathing and coughing, sitting upright, and suctioning, are not likely to improve oxygenation. DIF: Cognitive Level: Apply (application) REF: 1609 TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity 3. A patient with respiratory failure has a respiratory rate of 6 breaths/min and an oxygen saturation (SpO2) of 88%. The patient is increasingly lethargic. Which intervention will the nurse anticipate? a. Administration of 100% O2 by non-rebreather mask b. Endotracheal intubation and positive pressure ventilation c. Insertion of a mini-tracheostomy with frequent suctioning d. Initiation of continuous positive pressure ventilation (CPAP) ANS: B The patient’s lethargy, low respiratory rate, and SpO2 indicate the need for mechanical ventilation with ventilator-controlled respiratory rate. Giving high-flow O2 will not be helpful because the patient’s respiratory rate is so low. Insertion of a mini-tracheostomy will facilitate removal of secretions, but it will not improve the patient’s respiratory rate or oxygenation. CPAP requires that the patient initiate an adequate respiratory rate to allow adequate gas exchange. DIF: Cognitive Level: Apply (application) REF: 1616 TOP: Nursing Process: Planning MSC: NCLEX: Physiological Integrity 4. The oxygen saturation (SpO2) for a patient with left lower lobe pneumonia is 90%. The patient has wheezes, a weak cough effort, and complains of fatigue. Which action should the nurse take next? a. Position the patient on the left side. b. Assist the patient with staged coughing. c. Place a humidifier in the patient’s room. d. Schedule a 4-hour rest period for the patient. ANS: B The patient’s assessment indicates that assisted coughing is needed to help remove secretions, which will improve oxygenation. A 4-hour rest period at this time may allow the O2 saturation to drop further. Humidification will not be helpful unless the secretions can be mobilized. Positioning on the left side may cause a further decrease in oxygen saturation because perfusion will be directed more toward the more poorly ventilated lung. DIF: Cognitive Level: Apply (application) REF: 1616 TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity 5. A nurse is caring for an obese patient with right lower lobe pneumonia. Which position will be best to improve gas exchange? a. On the left side c. In the tripod position b. On the right side d. In the high-Fowler’s position ANS: A The patient should be positioned with the “good” lung in the dependent position to improve the match between ventilation and perfusion. The obese patient’s abdomen will limit respiratory excursion when sitting in the high-Fowler’s or tripod positions. DIF: Cognitive Level: Apply (application) REF: 1617 TOP: Nursing Process: Implementation MSC: NCLEX: Physiological Integrity 6. When admitting a patient with possible respiratory failure and a high PaCO2, which assessment information should be immediately reported to the health care provider? a. The patient is very somnolent. b. The patient complains of weakness. c. The patient’s blood pressure is 164/98. d. The patient’s oxygen saturation is 90%.