Surgical Conditions of the Newborn

Newborn Surgical Conditions: CDH & EA/TEF - Breath & Feed Frights

• Congenital Diaphragmatic Hernia (CDH)

  • Types: Bochdalek (posterolateral, 85-90% left), Morgagni (anteromedial).
  • Presentation: Severe respiratory distress, scaphoid abdomen, ↓ breath sounds, bowel sounds in chest.
  • Dx: Antenatal USG; Postnatal CXR (bowel loops in chest, mediastinal shift).
  • Management: Intubation, NG decompression, delayed surgery. Prognosis: Lung-to-Head Ratio (LHR) < 1.0 is poor.

• Esophageal Atresia & Tracheoesophageal Fistula (EA/TEF)

  • Types: Gross classification; Type C (atresia + distal TEF) most common (~85%).
  • Presentation: Maternal polyhydramnios; choking, cyanosis, copious frothy secretions with feeds.
  • Dx: Failure to pass NG tube > 10-12 cm; X-ray (coiled tube in pouch); gas in bowel = distal TEF.
  • Associations: 📌 VACTERL (Vertebral, Anal, Cardiac, TEF, Renal, Limb).

  ⭐ Type C EA/TEF (atresia with distal fistula) is the most common variant, accounting for approximately 85% of cases.

Newborn Surgical Conditions: Abdominal Wall & Midgut - Outies & Twisted Guts

• Abdominal Wall Defects

  • Management: Sterile wrap, IV fluids, OG/NG tube, antibiotics, surgical repair (primary/staged).
  • 📌 Omphalocele: On midline, in sac, Often other anomalies.
  • 📌 Gastroschisis: Guts out (no sac), Generally right. | Feature | Omphalocele | Gastroschisis | |------------------|-------------------------------------------|-------------------------------------------| | Location | Midline, umbilical cord on sac | Paraumbilical (usually R), no cord on defect | | Covering Sac | Present | Absent, bowel exposed | | Bowel | Usually normal | Often thickened, matted, foreshortened | | Assoc. Anomalies | Common (~50-70%; cardiac, chromosomal) | Less common (~10-15%); bowel atresia/stenosis |

• Malrotation with Volvulus

  • Presentation: Sudden bilious vomiting, abdominal distension, shock.
  • Diagnosis: Upper GI series (corkscrew sign); USG (whirlpool sign).
  • Management: Emergency laparotomy (Ladd's procedure to de-rotate, divide Ladd's bands, appendectomy).

  ⭐ Malrotation with volvulus: surgical emergency; delay risks bowel necrosis.

• Duodenal Atresia

  • Presentation: Bilious vomiting (hrs of birth), polyhydramnios (maternal).
  • Diagnosis: X-ray: "double bubble" sign.
  • Associated: Trisomy 21 (~30%).
  • Management: Surgical repair (duodenoduodenostomy).

• Flowchart: Neonatal Bilious Vomiting

Newborn Surgical Conditions: Lower GI Obstructions - Blocked Pipes Below

• Jejunoileal Atresia:
  • Presentation: Bilious vomiting, abdominal distension, failure to pass meconium.
  • Cause: In-utero vascular insult. Types I-IV.
  • Dx: X-ray (multiple dilated loops, air-fluid levels, no distal gas).
• Hirschsprung's Disease:
  • Patho: Aganglionosis of distal bowel.
  • Presentation: Delayed meconium passage (>48hrs), constipation, enterocolitis.
  • Dx: Contrast enema (transition zone); Rectal biopsy (gold standard: no ganglion cells).

  ⭐ Rectal biopsy (absent ganglion cells) is gold standard for Hirschsprung's.

• Anorectal Malformations (ARM):
  • Spectrum: Low vs. high; fistula common.
  • Presentation: No anal opening, meconium from abnormal site.
  • Associations: 📌 VACTERL (Vertebral, Anal, Cardiac, Tracheo-Esophageal, Renal, Limb).
  • Dx: Clinical, cross-table lateral X-ray, USG.
• Meconium Ileus:
  • Presentation: Abdominal distension, bilious vomiting, failure to pass meconium.
  • Strong link: Cystic Fibrosis (CF) - screen.
  • Dx: X-ray ("soap bubble"/"ground glass" appearance); Contrast enema (microcolon).

High‑Yield Points - ⚡ Biggest Takeaways

• TEF: Type C most common; polyhydramnios, NG tube coils.
• CDH (Bochdalek): Left-sided, scaphoid abdomen, respiratory distress, pulmonary hypoplasia.
• Omphalocele: Midline, sac present, associated anomalies. Gastroschisis: Right of umbilicus, no sac.
• Duodenal Atresia: "Double bubble" sign, bilious vomiting, associated with Down syndrome.
• Malrotation with Volvulus: Sudden bilious vomiting is emergency; UGI series shows corkscrew sign.
• Hirschsprung's: Delayed meconium passage; aganglionosis on rectal biopsy.
• NEC: Prematurity major risk; pneumatosis intestinalis on X-ray_._