NLE Reviewer: PEEP and Newborn Respiratory Distress
Newborns experiencing respiratory distress may require respiratory support to improve lung expansion and oxygenation. One important concept in neonatal respiratory care is positive end-expiratory pressure, commonly called PEEP.
Nursing Practice Question
Situation: Baby Girl Cheetah is born with Apgar scores of 5 and 7. The infant experiences respiratory difficulty. After therapeutic interventions, the baby is able to expand her lungs adequately.
Question: The amount of pressure that would enable her to continue to reinflate the alveoli of her lungs would be:
- 6 to 10 cm of water
- 8 to 12 cm of water
- 10 to 15 cm of water
- 15 to 20 cm of water
Answer and Rationale
Important clarification: The question appears to test the concept of positive end-expiratory pressure (PEEP), but the exact numerical answer cannot be established confidently from the information provided alone. If an answer key identifies one of the listed ranges, it should be checked against the specific nursing reference or teaching material used for this question.
PEEP is positive pressure maintained in the airways at the end of expiration. It helps prevent alveolar collapse and can improve functional residual capacity and oxygenation in appropriately selected patients.
The pressure needed by a newborn depends on factors such as gestational age, the underlying cause of respiratory distress, lung compliance, oxygenation, and the type of respiratory support being used. Therefore, the listed pressure ranges should not be treated as universally appropriate settings for newborns.
Why Is PEEP Important?
Alveoli are tiny air sacs where oxygen and carbon dioxide exchange occurs. During expiration, some alveoli may be prone to collapse, especially when lung function is impaired. PEEP helps maintain pressure at the end of expiration so that alveoli are more likely to remain open.
- Alveolar stability: Helps reduce repeated collapse and reopening of susceptible alveoli.
- Oxygenation: May improve oxygen exchange by supporting lung recruitment.
- Individualized settings: Excessive pressure can cause harm, including air leak and impaired circulation, so respiratory support must be carefully monitored.
What Does the Apgar Score Tell Us?
The Apgar score assesses a newborn's condition using appearance, pulse, grimace, activity, and respiration. Scores are interpreted in relation to the time after birth and the clinical context. An Apgar score alone does not determine the appropriate PEEP setting.
Board Exam Tip
When a question mentions maintaining alveolar expansion at the end of expiration, consider the function of PEEP. Separate the underlying physiological principle from a specific numerical setting, because clinical settings depend on the newborn's condition and the respiratory support method.
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This article is intended for nursing education and board-exam review. It is not an official PRC publication and does not replace current neonatal care protocols, institutional policies, or professional judgment.