A nurse is assessing a 1-day-old newborn for signs of pathol… | 마이메르시 MyMerci
Maternal Newborn Health
문제
A nurse is assessing a 1-day-old newborn for signs of pathological jaundice.
1Jaundice appearing on the face and extending to the chest
2Serum bilirubin level of 8 mg/dL at 48 hours of age is within the physiological range.
3Jaundice appearing within the first 24 hours of life with lethargy✓ 정답
4Yellow discoloration of the sclera and mucous membranes is a common sign of jaundice.
해설
Jaundice within first 24 hours with lethargy indicates severe pathological hyperbilirubinemia requiring immediate intervention to prevent kernicterus. Other findings are less urgent or physiological.
심화 해설
Core Nursing ExplanationKey Concept Analysis: This question tests the critical distinction between Physiological Jaundice and Pathological Jaundice in a newborn. The core theme is identifying the "red flag" sign that demands immediate nursing and medical intervention. Physiological jaundice is a normal transitional process, while pathological jaundice indicates an underlying disease process (e.g., hemolytic disease, infection, metabolic disorder) that can lead to brain damage (Kernicterus).
Answer Rationale: Key Point! The correct answer is option ③ because it presents two cardinal signs of pathological jaundice: onset within the first 24 hours of life and lethargy. Physiological jaundice typically appears after 24 hours (peaking around days 3-5). Lethargy is a neurological sign suggesting that high levels of unconjugated bilirubin are crossing the blood-brain barrier, posing a risk for kernicterus. This combination is a medical emergency.
Distractor Analysis:
Option ①: Describes the typical cephalocaudal (head-to-toe) progression of jaundice, which can be seen in both physiological and pathological cases. It is not a specific indicator of pathology by itself.
Option ②: States a fact. A serum bilirubin of 8 mg/dL at 48 hours is generally within the expected range for physiological jaundice and does not, in isolation, indicate pathology.
Option ④: Correctly identifies the classic clinical sign of jaundice (yellow sclera and mucous membranes), but this sign is present in both physiological and pathological jaundice. It does not help differentiate between the two.
Related Concepts: Understanding the timeline, risk factors (e.g., ABO/Rh incompatibility, G6PD deficiency), and the need for Phototherapy or Exchange transfusion is crucial. The nursing priority is early identification and reporting of pathological signs to prevent irreversible neurological injury.
Concept Summary
Type
Onset
Peak
Key Characteristics
Nursing Action
Physiological Jaundice
>24 hours
Day 3-5
Resolves by 1-2 weeks. No systemic symptoms. Bilirubin rises slowly.
Monitor, encourage feeding, parent education.
Pathological Jaundice
5 mg/dL/day). Associated with lethargy, poor feeding, high-pitched cry.
URGENT: Notify provider, prepare for phototherapy/exchange transfusion.
Nursing Clinical Practice GuideClinical Scenario: You are the nurse on the postpartum unit. During your morning assessment of Baby Girl Rodriguez, born 18 hours ago via spontaneous vaginal delivery, you note a subtle yellow tinge to her skin on her face and the whites of her eyes. She is difficult to arouse for her feeding and seems unusually sleepy (lethargic).
Nursing Intervention Strategy:
Immediate Assessment: Perform a thorough head-to-toe assessment. Use a Transcutaneous Bilirubinometer (TcB) or ensure a Serum Bilirubin level is STAT ordered. Check vital signs, especially for temperature instability. Assess for other neurological signs: high-pitched cry, hypotonia (floppiness), arching of the back (opisthotonos).
Priority Action: Immediately notify the neonatal healthcare provider (pediatrician/neonatal nurse practitioner). This is not a "wait and see" situation. Early communication is critical.
Prepare for Intervention: Anticipate orders for intensive phototherapy. Gather the phototherapy unit, ensure it is functioning, and obtain appropriate eye protection (eye patches).
Supportive Care & Monitoring: Increase feeding frequency (breastfeeding or formula) to promote hydration and stooling, which helps eliminate bilirubin. Under phototherapy, monitor the infant's temperature closely, protect the eyes, expose maximal skin surface area, and reposition frequently.
Family Communication & Education: Explain the situation to the parents in a calm, clear manner. "We've noticed some early jaundice, which can sometimes be a sign that needs quicker treatment. We are checking her levels now and will start a special light treatment if needed to keep her safe."
Patient Safety and Precautions:
Never delay reporting jaundice with onset
핵심 개념
Pathological Jaundice — Jaundice that appears within the first 24 hours of life, is associated with a rapid rise in bilirubin (>5 mg/dL/day), or is accompanied by signs of illness. It indicates an underlying disease process.
Kernicterus — A rare but devastating neurological syndrome caused by the deposition of unconjugated bilirubin in the brain, leading to permanent damage (e.g., cerebral palsy, hearing loss). It is the most serious complication of untreated severe hyperbilirubinemia.
Physiological Jaundice — A common, benign condition in newborns caused by increased red blood cell breakdown and immature liver function. It appears after 24 hours, peaks around days 3-5, and resolves without treatment.
Phototherapy — The first-line treatment for hyperbilirubinemia. It uses specific wavelengths of light to convert unconjugated bilirubin in the skin into a water-soluble form that can be excreted.
Unconjugated (Indirect) Bilirubin — The lipid-soluble form of bilirubin produced from the breakdown of heme in red blood cells. It must be conjugated by the liver to become water-soluble for excretion. High levels are neurotoxic.
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