Emergency Neonatal Pulmonary & Metabolic Dysfunctions

Congenital Diaphragmatic Hernia

Congenital Bochdalek Diaphragmatic Defect

Primary risk age: Newborns (Presents immediately at birth)

Urgency: Emergency
Typical age: Newborns (Presents immediately at birth)
Body system: Neonatal (Newborns)

Typical course: Hospital stay is typically 3 to 8 weeks; long-term follow-up spans throughout childhood.

Reviewed against AAP · CDC · WHO · NHS guidance Last reviewed 2026-06-13

1. Summary & Pathophysiology

Congenital Bochdalek Diaphragmatic Defect

Pathophysiology (Development Path)

Incomplete closure of the pleuroperitoneal membranes during embryonic development allows abdominal viscera to herniate into the chest cavity. This compresses the developing fetal lungs, causing bilateral pulmonary hypoplasia (reduced alveoli and airways) and muscularization of pulmonary arteries, leading to persistent pulmonary hypertension (PPHN) at birth.

Primary Causes & Etiology

Developmental failure of the diaphragmatic membranes in utero (multifactorial genetic and environmental factors).

2. Symptom Continuum

Early Onset Signs
Severe respiratory distress immediately after birth, characterized by tachypnea, chest retractions, cyanosis, and a classic sunken (scaphoid) abdomen.
Progressive Phase
Absence of breath sounds on the affected side; displacement of heart sounds to the opposite side; bowel sounds heard in the thoracic cavity.
Severe Indicators
Severe hypoxemia, hypercapnia, metabolic acidosis, and profound pulmonary hypertension leading to right-to-left shunting and cardiac failure.

3. Clinical Verification

Prenatal fetal ultrasound or MRI; chest X-ray immediately after birth demonstrating loop-like bowel shadows in the hemithorax and mediastinal shift.

4. Care & Elements Plan

Primary Care Treatment Plan

Immediate endotracheal intubation at birth (no bag-valve mask). Support with gentle ventilation, inhaled nitric oxide (iNO), or ECMO. Surgical repair of the diaphragm once hemodynamics stabilize.

Home Support Elements

Home care after hospital discharge involves feeding therapy (often G-tube), monitoring respiratory rates, oxygen saturation, and regular physical therapy.

Generic Active Ingredients (No Brands)

Inhaled Nitric Oxide (iNO - generic pulmonary vasodilator active element)
Fentanyl or Vecuronium (generic sedatives/paralytics to prevent lung stress during ventilation).

Lists active elements only. Never administer self-designed therapies.

5. Doctor Critical Lines

Critical Thresholds: When to See a Doctor

This is diagnosed prenatally or at birth. Seek immediate emergency pediatric care if a post-repair infant at home shows difficulty feeding, rapid breathing, blue lips, or vomiting.

6. Vaccine & Prevention

Routine Prophylaxis (Prevention)

No known prevention; prenatal screening can help coordinate delivery at a tertiary neonatal center.

Immunization Context

Standard immunizations are recommended, with RSV prophylaxis and annual influenza vaccine given due to lung sensitivity.

7. Timelines & Outlook

Active Timeline

Hospital stay is typically 3 to 8 weeks; long-term follow-up spans throughout childhood.

Expected Prognosis

Survival rate is ~70-80% in specialized centers, but survivors have long-term respiratory, gastrointestinal (GERD), and developmental challenges.

Potential Untreated Complications

Pulmonary hypoplasia, persistent pulmonary hypertension, severe gastroesophageal reflux, hearing loss (associated with ECMO), scoliosis.

Emergency

Neonatal Respiratory Distress Syndrome (RDS)

Neonatal Surfactant Deficiency Pulmonary Disease

Premature Neonates (Incidence increases with decreasing gestational age; rare in term infants)

Moderate

Neonatal Jaundice (Hyperbilirubinemia)

Neonatal Bilirubin Metabolic Clearance Dysfunction

Neonates (Common in the first week of life; affects up to 60% of term and 80% of preterm infants)