A 29‑week infant develops grunting, retractions, and rising FiO₂ needs shortly after birth. CPAP is started, but FiO₂ increases from 0.30 → 0.40 over 45 minutes. A CXR shows low lung volumes and diffuse reticulogranular patterns with air bronchograms. The team is considering early surfactant. What is the evidence‑supported initial approach to the treatment of moderate RDS?

A 29‑week infant develops grunting, retractions, and rising FiO₂ needs shortly after birth. CPAP is started, but FiO₂ increases from 0.30 → 0.40 over 45 minutes. A CXR shows low lung volumes and diffuse reticulogranular patterns with air bronchograms. The team is considering early surfactant. Which finding supports a diagnosis of RDS over TTN?

A 23‑day‑old, 34‑week premature infant (now corrected 37 weeks) is in the NICU growing on full enteral feeds. Over the past 12 hours, the bedside RN reports the infant is more irritable, feeding poorly, and having temperature instability (temps ranging from 36.1–37.9°C). The infant now has apnea, increased bradycardic episodes, and appears more lethargic. On exam: HR 182, RR 68 with periods of apnea, BP 58/32, cap refill 4 seconds Skin pale and mottled Abdomen mildly distended, bowel sounds hypoactive Fontanel soft but infant minimally responsive Which additional diagnostic test is indicated in late‑onset sepsis?

A 29‑week infant develops grunting, retractions, and rising FiO₂ needs shortly after birth. CPAP is started, but FiO₂ increases from 0.30 → 0.40 over 45 minutes. A CXR shows low lung volumes and diffuse reticulogranular patterns with air bronchograms. The team is considering early surfactant. Which process can worsen hypoxemia in RDS?

You are asked to evaluate a newborn with persistent drainage from the umbilicus. On examination, the periumbilical skin is normal without erythema, but you observe a steady brown discharge oozing from the umbilical stump. Which of the following is the most likely diagnosis?

A former 25-week gestation infant is being prepared for discharge. While discussing the need for ophthalmology follow-up, the mother asks why retinopathy of prematurity (ROP) occurs. You explain that the primary physiological mechanism driving the abnormal vessel growth in ROP is:

You are a Neonatal Nurse Practitioner (NNP) evaluating a vigorous infant in the newborn nursery. The infant had Apgar scores of 9 at both 1 and 5 minutes. While the infant is currently asymptomatic, the bedside nurse reports an auscultated irregular heart rhythm. An ECG monitor reveals a variable R-R interval that correlates with the infant’s respiratory cycle. The maternal history is unremarkable.

After stabilizing a newborn at delivery, the obstetrician informs you that the placenta demonstrated a velamentous cord insertion. You know this means:

Prove that in an incidence geometry, each point has at least two lines on it. Recall the axioms of an incidence geometry: There is exactly one line on any pair of distinct points. Every line has at least two distinct points on it. There are at least three distinct points. Not all points lie on the same line.

State Hilbert’s order axiom II-4 (Pasch’s Lemma).