Perinatal asphyxia is a condition resulting from insufficient oxygen delivery to the fetus or newborn. It requires immediate and systematic evaluation and management to prevent long-term neurological damage and other complications.
Initial Assessment and Stabilization
- Immediate Assessment:
- Apgar Score: Evaluate at 1, 5, and 10 minutes.
- Respiratory Effort: Check for spontaneous breathing or gasping.
- Heart Rate: Monitor, ideally above 100 bpm.
- Color: Assess for cyanosis or pallor.
- Muscle Tone: Observe movements and tone.
- Resuscitation Steps:
- Warmth: Place the neonate under a radiant warmer.
- Positioning: Position the head in a slightly extended ‘sniffing’ position.
- Clearing Airway: Suction the mouth and nose if there is obvious obstruction.
- Stimulation: Dry and stimulate the newborn to initiate breathing.
- Positive Pressure Ventilation (PPV):
- If the newborn is not breathing or has a heart rate <100 bpm, start PPV using a bag and mask.
- Ensure a proper seal and appropriate ventilation rate (40-60 breaths per minute).
- Use 21% oxygen initially for term neonates; consider higher concentrations if no improvement.
- Chest Compressions:
- If the heart rate remains <60 bpm after 30 seconds of effective PPV, start chest compressions.
- Coordinate compressions with ventilations in a 3:1 ratio.
- Medications:
- Epinephrine: Administer if the heart rate remains <60 bpm despite effective ventilation and compressions. Dose: 0.01-0.03 mg/kg IV or via endotracheal tube.
- Volume Expansion: Consider if there is evidence of shock or blood loss. Use isotonic saline or blood products (10 ml/kg).
Post-Resuscitation Care
- Monitoring:
- Continuous monitoring of heart rate, respiratory rate, oxygen saturation, and blood pressure.
- Frequent neurological assessments.
- Supportive Care:
- Oxygen Therapy: Maintain SpO2 within target range (90-95%).
- Thermoregulation: Prevent hypothermia or hyperthermia.
- Glucose Monitoring: Regular monitoring and maintenance of normoglycemia.
- Fluid Management: Administer fluids judiciously to avoid fluid overload.
- Neurological Protection:
- Therapeutic Hypothermia: Consider for eligible neonates with moderate to severe hypoxic-ischemic encephalopathy (HIE). Initiate within 6 hours of birth.
- Seizure Management: Monitor for seizures and treat with antiepileptic drugs if necessary.
- Investigations:
- Blood Gases: Assess for metabolic acidosis.
- Complete Blood Count (CBC): Check for infection or anemia.
- Blood Glucose: Monitor for hypoglycemia.
- Electrolytes and Renal Function: Assess for renal impairment.
- Neuroimaging: Consider MRI or cranial ultrasound for HIE evaluation.
- Family Support:
- Keep the family informed and involved in the care process.
- Provide emotional support and counseling.
Follow-Up and Long-Term Care
- Neurological Monitoring:
- Regular follow-up for developmental assessments.
- Early intervention programs if developmental delays or neurological deficits are detected.
- Multidisciplinary Care:
- Involve a team of neonatologists, neurologists, physiotherapists, and occupational therapists.
- Individualized care plans for each child based on ongoing assessments and needs.
- Parent Education:
- Educate parents about potential long-term outcomes and early signs of developmental delays.
- Provide resources and support for at-home care and follow-up appointments.