Asphyxia Neonatorum

1. INTRODUCTION

• Asphyxia neonatorum is a life-threatening condition in which a newborn fails to start and maintain breathing at birth.

• It leads to decreased oxygen (hypoxia) and increased carbon dioxide (hypercapnia).

Major cause of:

• Neonatal mortality

• Brain damage (Hypoxic Ischemic Encephalopathy – HIE)

• Requires immediate resuscitation within the “Golden Minute”.

2. DEFINITION

• Asphyxia neonatorum = Failure of a newborn to initiate and sustain spontaneous respiration immediately after birth.

  
  

3. CAUSES

A. Antenatal Factors (Before Birth)

• Maternal anemia

• Pregnancy-induced hypertension (PIH)

• Diabetes mellitus

• Infections (TORCH)

• Placental insufficiency

• IUGR

👉 Effect: Reduced oxygen supply to fetus

B. Intranatal Factors (During Labour)

• Prolonged/obstructed labour

• Birth trauma

• Cord prolapse or cord around neck

• Placental abruption

• Meconium-stained liquor

👉 Effect: Acute oxygen deprivation during delivery

C. Postnatal Factors (After Birth)

• Prematurity

• Respiratory distress syndrome

• Airway obstruction

• Congenital anomalies (heart/lung)

• Sepsis

👉 Effect: Failure of breathing after birth

4. CLINICAL MANIFESTATIONS

A. Mild Asphyxia

• Delayed cry

• Slight cyanosis

• HR >100/min

B. Moderate Asphyxia

• Poor breathing

• HR <100/min

• Hypotonia (floppy baby)

• Low APGAR score

C. Severe Asphyxia

• No breathing (apnea)

• HR <60/min

• Severe cyanosis/pale

• Unconscious

• Seizures

5. COMPLICATIONS

A. Immediate Complications

• Hypoxic Ischemic Encephalopathy (HIE)

• Respiratory distress

• Metabolic acidosis

• Seizures

• Multi-organ failure

B. Long-Term Complications

• Cerebral palsy

• Developmental delay

• Mental retardation

• Epilepsy

6. DIAGNOSIS

Based on:

• History (difficult labour, fetal distress)

• APGAR score (<7)

• Blood gas analysis (acidosis)

• Clinical signs

  
  

7. MANAGEMENT

A. Immediate Resuscitation (Golden Minute)

Step 1: Initial Steps

• Provide warmth

• Position airway (head slightly extended)

• Clear airway (suction if needed)

• Dry and stimulate

Step 2: If Not Breathing

• Start Bag and Mask Ventilation (BMV) within 1 minute

• Give oxygen

Step 3: If Heart Rate <60/min

• Start chest compressions

• Continue ventilation

Step 4: If No Response

• Intubation

• Drugs (Adrenaline, fluids)

B. Post-Resuscitation Care

• Maintain temperature

• Monitor vital signs

• Oxygen therapy

• IV fluids

• Control seizures

• NICU admission

8. PREVENTION

• Good antenatal care

• Early detection of high-risk pregnancy

• Skilled birth attendance

• Proper intrapartum monitoring

• Availability of resuscitation equipment

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🚀Here’s a short “exam trick” version for Asphyxia Neonatorum — super quick points you can remember :

Introduction

Asphyxia = Baby fails to breathe at birth

Definition

Failure to initiate and sustain breathing after birth

Causes

👉 Antenatal

Maternal problems = ↓ oxygen to fetus

👉 Intranatal

Labour problems = oxygen cut during delivery

👉 Postnatal

Baby problems = breathing failure after birth

Clinical Manifestations

No cry = No breathing

Cyanosis = Blue baby

HR ↓ = <100/min

Floppy = Low tone

Low APGAR = Birth depression

Complications

HIE = Brain damage

Acidosis = ↑ CO₂

Seizures = Brain injury sign

Death = Severe cases

Management

👉 Initial steps

Warm = Prevent hypothermia

Airway = Position & suction

Stimulate = Start breathing

👉 If not breathing

BMV = Bag & mask ventilation

👉 Severe

CPR = Chest compression + drugs

Prevention

ANC care = Healthy pregnancy

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🚀Here’s a set of 07 MCQs on Asphyxia Neonatorum for practice :