A student is caring for a patient with positive end-expiratory pressure (PEEP) at 5 cm H20. The student asks “What is the purpose of PEEP?” which of the following is an appropriate response by the nurse?
PEEP deceases the peak respiratory pressures
“PEEP increases the number of breaths the patient takes on his own.”
“PEEP augments the patient’s overall tidal volumes.”
“PEEP improves oxygenation by keeping alveoli open after exhalation.”
The Correct Answer is D
A. PEEP decreases the peak respiratory pressures:
PEEP may increase peak respiratory pressures, especially during inspiration, but its primary purpose is to prevent alveolar collapse and improve oxygenation.
B. “PEEP increases the number of breaths the patient takes on his own.”:
PEEP does not increase the number of breaths the patient takes. It primarily affects the quality of ventilation by preventing alveolar collapse.
C. “PEEP augments the patient’s overall tidal volumes.”:
PEEP does not necessarily increase overall tidal volumes. It focuses on maintaining positive pressure at the end of expiration to prevent alveolar collapse.
D. “PEEP improves oxygenation by keeping alveoli open after exhalation.”
Positive end-expiratory pressure (PEEP) is used in mechanical ventilation to maintain positive pressure in the airways and alveoli at the end of the respiratory cycle (expiration). This helps prevent alveolar collapse and improves oxygenation by keeping the alveoli open, particularly in patients with conditions like acute respiratory distress syndrome (ARDS). PEEP is commonly used to increase functional residual capacity (FRC) and improve oxygenation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. A client who has a prescription for insulin, and his premeal capillary blood glucose was 110 mg/dL, and his post-meal capillary blood glucose is now 160 mg/dL:
While changes in blood glucose levels are important to monitor, the described change is not as significant as a sudden drop in blood pressure. The blood glucose levels in this scenario are still within a reasonable range.
B. A client whose blood pressure at 0800 was 138/86 mm Hg, and at 1200 is 106/60 mm Hg:
This is the priority client. The significant drop in blood pressure raises concerns about hypovolemia or circulatory issues, which require immediate attention to prevent complications such as inadequate organ perfusion.
C. A client who reports pain as 4 on a scale of 1 to 10 at 0800 and now reports pain as 6:
Pain management is important, but the change in pain intensity from 4 to 6, while indicating an increase, may not be as urgent as addressing a significant drop in blood pressure. Pain assessment and management can be addressed after stabilizing the client with the acute change.
D. A client whose wound drainage at 0800 was sanguineous, and now it is serosanguineous:
Changes in wound drainage color can be important for assessing the healing process, but a shift from sanguineous to serosanguineous is generally within the expected progression of wound healing. It may not require immediate intervention as compared to a significant drop in blood pressure.
Correct Answer is C
Explanation
A. Loop the tubing of the chest tube on the client’s bed:
Looping the tubing may create dependent loops that can trap drainage and prevent effective functioning of the chest tube. It can impede the drainage of air or fluid from the pleural space.
B. Strip the client’s chest tube every 2 hrs:
Stripping or milking the chest tube is an outdated practice. It can cause trauma to the tissue surrounding the chest tube and increase the risk of complications, including damage to the lung tissue or tubing.
C. Place the chest tube drainage system below the level of the client’s heart:
This is the correct action. Placing the chest tube drainage system below the level of the client's chest allows gravity to assist with drainage and prevents backflow or accumulation of fluids within the chest tube.
D. Tape the connections on the client’s chest tube:
Taping the connections on the chest tube is not recommended. It is important to keep connections secure, but taping can make it difficult to quickly identify and address any issues with the chest tube system during monitoring and assessment.
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