# A nurse is assessing a postterm newborn who was born at 42 weeks gestation. Which assessment finding would be most concerning and require immediate intervention? > source: MyMerci (mymerci.kr) > url: https://mymerci.kr/pages/nclex_q.php?qn_id=543227 > language: ko > subject: Maternal Newborn Health ## 문제 A nurse is assessing a postterm newborn who was born at 42 weeks gestation. Which assessment finding would be most concerning and require immediate intervention? ## 보기 1. Wrinkled, peeling skin with minimal vernix caseosa 2. Long fingernails and toenails 3. Decreased subcutaneous fat with loose, dry skin 4. Meconium-stained amniotic fluid with respiratory distress **✔ 정답** **정답: 4** ## 해설 Meconium-stained amniotic fluid with respiratory distress indicates potential meconium aspiration syndrome, requiring immediate intervention like airway clearance and oxygen. Other findings are typical postterm characteristics but not immediately life-threatening. ## 심화 해설 Clinical Reasoning and Priority Setting When assessing a postterm newborn, the nurse must rapidly differentiate between expected findings of postmaturity and signs of acute, life-threatening complications. Postterm infants are born after 42 weeks gestation, and the aging placenta often leads to placental insufficiency, which can cause fetal hypoxia and the passage of meconium in utero. Analysis of Options **Options 1, 2, and 3** describe classic physical characteristics of postmaturity syndrome. Wrinkled, peeling skin with minimal vernix caseosa, long fingernails, and decreased subcutaneous fat with loose, dry skin are all consequences of the loss of protective vernix and ongoing fetal growth in an environment of declining amniotic fluid and placental function. While these findings require careful skin care, thermoregulation, and nutritional monitoring, they are not immediately life-threatening and represent expected, non-acute adaptations. **Option 4** describes a newborn with meconium-stained amniotic fluid and concurrent respiratory distress. This combination is the most concerning finding. The passage of meconium is a common fetal response to hypoxic stress, which is a significant risk in the postterm period. The presence of respiratory distress—manifesting as tachypnea, grunting, nasal flaring, or retractions—strongly suggests meconium aspiration syndrome (MAS). MAS is a life-threatening respiratory disease caused by the aspiration of meconium-stained amniotic fluid into the lungs, resulting in airway obstruction, chemical pneumonitis, and surfactant inactivation [1]. The impacts of MAS are severe and include respiratory failure, persistent pulmonary hypertension, and air leaks [1]. This condition requires immediate intervention, such as airway clearance, supplemental oxygen, and potentially advanced respiratory support, making it the clear priority. Why This Is the Priority The clinical decision-making here follows the airway, breathing, and circulation (ABC) framework. While the integumentary findings in options 1, 2, and 3 indicate a newborn who is at risk for hypoglycemia and hypothermia, option 4 indicates a newborn who is actively failing to ventilate and oxygenate. A prospective cohort study on the outcomes of meconium-stained amniotic fluid in term labor confirmed that the passage of meconium during labor significantly increases the chance of undesirable birth outcomes . The immediate threat of hypoxemic respiratory failure from MAS takes absolute precedence over the supportive care required for the skin and nutritional changes of postmaturity.References (research sources) - [1]Meconium aspiration syndrome and associated factors among neonates admitted at neonatal intensive care unit at Northwest Ethiopia comprehensive specialized hospitals Northwest Ethiopia 2023.Research articleAdugna M, Asmare K, Wondim A. (2025) · DOI: 10.1186/s12887-024-05181-4 ## 임상 시나리오 Clinical Guide: Postterm Newborn Assessment & Meconium Aspiration Syndrome Immediate Priorities - Assess respiratory effort first: tachypnea, grunting, nasal flaring, retractions, or cyanosis demand urgent intervention. - Note amniotic fluid history: any report of meconium-stained fluid combined with respiratory signs triggers a high suspicion for meconium aspiration syndrome (MAS). - Prepare for immediate suctioning, oxygen delivery, and possible positive pressure ventilation or NICU transfer. Expected vs. Critical Findings - **Expected:** Dry, peeling skin; minimal vernix; long fingernails; decreased subcutaneous fat. These require supportive care (thermoregulation, gentle skin care, monitoring feeding and glucose). - **Critical:** Respiratory distress with meconium-stained fluid. This combination indicates potential MAS, a life-threatening emergency. Nursing Actions for Suspected MAS - Suction the airway immediately if meconium is present and the newborn is not vigorous (per NRP guidelines). - Provide supplemental oxygen to maintain oxygen saturation within target range. - Monitor vital signs, pulse oximetry, and blood gases closely. - Notify the provider and prepare for chest X-ray and possible advanced respiratory support. - Maintain a neutral thermal environment to reduce oxygen consumption. Key Takeaway In postterm newborns, always prioritize respiratory and cardiovascular stability. Meconium-stained fluid with any sign of respiratory distress is a red flag for MAS and must be addressed before attending to the common integumentary changes of postmaturity. ## 핵심 개념 - **Meconium Aspiration Syndrome (MAS)** — A life-threatening respiratory disorder in newborns caused by aspiration of meconium-stained amniotic fluid, leading to airway obstruction, pneumonitis, and pulmonary hypertension. - **Postmaturity Syndrome** — A condition in postterm infants characterized by loss of subcutaneous fat, dry peeling skin, long nails, and meconium staining due to placental insufficiency. - **Postterm Newborn** — An infant born after 42 weeks of gestation, at increased risk for placental insufficiency, hypoxia, and meconium aspiration. - **Placental Insufficiency** — Decline in placental function often seen in postterm pregnancies, leading to reduced oxygen and nutrient delivery to the fetus. ## 같은 주제 문제 - [A nurse is assessing a postterm newborn who was born at 42 weeks gestation. Which assessme…](https://mymerci.kr/pages/nclex_q.php?qn_id=543225) - [A nurse is assessing a preterm newborn (32 weeks gestation) in the NICU. Which assessment …](https://mymerci.kr/pages/nclex_q.php?qn_id=543226) - [A nurse is caring for a postterm newborn (41 weeks gestation) who was born 4 hours ago and…](https://mymerci.kr/pages/nclex_q.php?qn_id=543228) - [A nurse is caring for a postterm newborn who is 42 weeks gestation. Which nursing interven…](https://mymerci.kr/pages/nclex_q.php?qn_id=543229) --- More free questions: [기출문제](https://mymerci.kr/) _학습 참고용입니다. 실제 임상은 최신 지침과 소속 기관 프로토콜을 따르세요._