When a baby is born and doesn’t take that first breath, time stops for every parent in the room. Why isn’t my baby crying? What are they doing? Is my child going to be okay? What happens in those first minutes and hours can determine your child’s long-term neurological health, and understanding the medical process can help you make sense of a moment that felt entirely out of your control.

Why Do Some Babies Not Breathe at Birth?

Most babies take their first breath within seconds of delivery. However, the World Health Organization (WHO) estimates that approximately 10% of all newborns require some assistance to begin breathing, and around 1% need intensive resuscitation measures. When a baby does not breathe at birth, the clinical term is birth asphyxia, a condition in which the baby’s brain and organs are deprived of adequate oxygen.

Birth asphyxia can result from a range of complications during pregnancy, labor, or delivery:

  • Umbilical cord complications: The cord may become compressed, wrapped around the baby’s neck (nuchal cord), or prolapse ahead of the baby, cutting off blood and oxygen flow.
  • Placental abruption: The placenta separates from the uterine wall before delivery, rapidly reducing the baby’s oxygen supply.
  • Prolonged or obstructed labor: Extended contractions or a stalled delivery can compress the umbilical cord and restrict blood flow over time.
  • Meconium aspiration: The baby inhales meconium (first stool) into the lungs before or during birth, blocking the airways.
  • Maternal complications: Conditions such as hypotension, chorioamnionitis, pre-eclampsia, or uterine rupture can all reduce oxygen delivery to the baby.
  • Shoulder dystocia: The baby’s shoulder becomes lodged behind the mother’s pelvic bone, delaying delivery and prolonging oxygen deprivation.
What is HIE (Hypoxic-Ischemic Encephalopathy)? HIE is the brain injury that can result from birth asphyxia. “Hypoxic” means lack of oxygen, “ischemic” means restricted blood flow, and “encephalopathy” means brain dysfunction or damage. HIE is classified as mild, moderate, or severe and is one of the leading preventable causes of cerebral palsy. According to the CDC, approximately 1 in 345 children in the United States is diagnosed with cerebral palsy.

What Do Doctors Do in the First 60 Seconds? The “Golden Minute”

The Neonatal Resuscitation Program (NRP), developed jointly by the American Academy of Pediatrics (AAP) and the American Heart Association (AHA), defines a precise sequence of interventions that must begin within the first 60 seconds after birth. This critical window is known clinically as the “golden minute.”

1
Initial assessment (0 to 30 seconds). The team evaluates breathing, muscle tone, and gestational age. The baby is dried, stimulated gently, and the airway is cleared if necessary.
2
Positive pressure ventilation (30 to 60 seconds). If the baby still is not breathing or has a heart rate below 100 bpm, the team begins bag-and-mask ventilation. The AAP identifies this as the single most important intervention in neonatal resuscitation.
3
Advanced interventions (if needed). If the baby does not respond, the team may intubate, administer chest compressions, or give emergency medications such as epinephrine.
4
NICU transfer and stabilization. Babies who required significant resuscitation are transferred to the neonatal intensive care unit for continuous monitoring and evaluation for cooling therapy eligibility.
Why timing is everything: According to the NICHD, brain cells begin to die within 4 to 6 minutes without adequate oxygen. Every second of delay increases the risk of permanent brain injury. Hospitals must have NRP-trained personnel and equipment immediately available for every delivery.
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What Are Apgar Scores and What Do They Mean?

Within one minute and again at five minutes after birth, the team assigns your baby an Apgar score, a rapid assessment rated 0 to 10 evaluating five indicators of newborn health:

Criteria0 Points1 Point2 Points
Heart rateAbsentBelow 100 bpmAbove 100 bpm
Breathing effortAbsentSlow or irregularStrong cry
Muscle toneLimpSome flexionActive movement
Reflex responseNo responseGrimaceCry or pull away
Skin colorBlue or paleBody pink, extremities blueCompletely pink

A score of 7 to 10 is normal. A score below 5 at 5 minutes indicates the baby is in distress and typically requires ongoing resuscitation. Research published in the New England Journal of Medicine shows a persistently low score at 10 minutes is one of the strongest predictors of neonatal encephalopathy and long-term neurological impairment.

Important for parents: Apgar scores alone do not diagnose brain injury. They are one piece of a larger clinical picture that includes cord blood gas results, brain imaging (MRI), continuous EEG monitoring, and serial neurological exams. If your baby received low scores, ask your neonatologist what follow-up evaluations are planned.

How Does Cooling Therapy (Therapeutic Hypothermia) Protect the Brain?

When a baby shows signs of moderate to severe oxygen deprivation, the single most important neuroprotective treatment is therapeutic hypothermia, commonly called cooling therapy. The baby’s core temperature is lowered to approximately 33.5°C (92.3°F) and maintained for 72 hours.

How does cooling therapy work?

After initial oxygen deprivation, a secondary cascade of brain injury unfolds over 6 to 72 hours. Cooling slows the brain’s metabolic rate, reducing energy demand and suppressing this destructive cascade, resulting in significantly less brain tissue death.

6 hrsTreatment Window
33.5°CTarget Temperature
72 hrsCooling Duration
~25%Reduced Risk

The 6-hour window

Cooling must begin within 6 hours of birth. The landmark Shankaran et al. trial, published in the NEJM, demonstrated that whole-body hypothermia reduced the combined risk of death or moderate-to-severe disability from 62% to 44% in babies with moderate to severe HIE.

If a hospital lacks cooling capability, the baby must be transferred immediately. Delays in recognizing the need for cooling or arranging transport are among the most consequential errors in newborn care.

Was Cooling Therapy Delayed or Never Started?

Failure to begin therapeutic hypothermia within the 6-hour window may constitute medical negligence.

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What Happens in the NICU After Birth Asphyxia?

Once stabilized, the clinical focus shifts to monitoring, diagnostics, and prognosis. In the NICU, your baby may undergo:

  • Brain MRI: Typically performed between days 3 and 7, MRI identifies the location, pattern, and extent of brain injury. MRI findings are among the strongest predictors of long-term neurodevelopmental outcomes.
  • Continuous EEG: Tracks brain electrical activity for seizures. Up to 50% of babies with moderate to severe HIE experience seizures in the first 48 hours, many subclinical (not visible to the eye).
  • Neurological examinations: Serial assessments evaluate reflexes, muscle tone, feeding ability, and level of consciousness.
  • Cord blood gas analysis: A cord pH below 7.0 indicates severe metabolic acidosis and confirms significant oxygen deprivation at birth.
  • Organ function monitoring: Blood tests track kidney, liver, and heart function, as oxygen deprivation can affect multiple organ systems.

You have the right to ask questions, request meetings with your baby’s care team, and obtain complete copies of your baby’s medical records. Understanding what happened, and why, is the first step toward getting your child the care and support they deserve.

What Is the Difference Between Birth Asphyxia and HIE?

Birth asphyxia refers to the event: the period during which a baby does not receive adequate oxygen at birth. Hypoxic-ischemic encephalopathy (HIE) is the brain injury that may result. Not every baby with asphyxia develops HIE, but when deprivation is prolonged or severe, HIE is the most common and most serious neurological consequence.

FactorBirth AsphyxiaHIE
DefinitionThe event: oxygen deprivation at birthThe injury: brain damage from oxygen loss
ICD-10 CodeP21 (Birth asphyxia)P91.6 (HIE of newborn)
Diagnosis timingIdentified at deliveryConfirmed days to weeks later (MRI, EEG)
TreatmentNeonatal resuscitation (NRP)Therapeutic hypothermia within 6 hours
Potential outcomesFull recovery (if mild)Cerebral palsy, epilepsy, developmental delays
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Can a Baby Fully Recover After Being Born Not Breathing?

The prognosis depends on several factors: how long the oxygen deprivation lasted, how quickly resuscitation was initiated, whether therapeutic hypothermia was administered within the 6-hour window, and the severity of any resulting brain injury on MRI.

Babies with mild HIE frequently make full or near-full recoveries, particularly when medical intervention was prompt. Babies with moderate HIE have variable outcomes, with many showing improvement over months and years through early intervention therapies (physical therapy, occupational therapy, speech therapy). Babies with severe HIE face a higher risk of cerebral palsy, epilepsy, intellectual disability, vision or hearing impairment, and motor function difficulties.

Regardless of severity, research consistently shows that early intervention in the first weeks and months of life can meaningfully improve developmental outcomes. The NIH recommends comprehensive developmental follow-up through at least 18 to 24 months of age for all babies diagnosed with HIE.

When Is a Baby Born Not Breathing the Result of Medical Negligence?

Not every case of birth asphyxia is preventable. Certain emergencies can occur despite appropriate care. However, in a significant number of cases, oxygen deprivation during delivery results from medical errors: failures to recognize warning signs, act on fetal distress, or follow established protocols.

Common examples of medical negligence include:

  • Failure to monitor fetal heart rate tracings: Abnormal patterns (late decelerations, variable decelerations, minimal variability) are the earliest warning signs that a baby is in distress. Missing or ignoring these patterns is one of the most frequently cited errors in birth injury cases.
  • Delayed emergency cesarean delivery: When fetal distress is identified, a timely C-section can prevent ongoing oxygen loss. ACOG recommends hospitals be prepared to begin an emergency cesarean within 30 minutes of the decision. Delays beyond this window significantly increase brain injury risk.
  • Improper use of vacuum or forceps: Misuse of operative delivery instruments can cause direct trauma or prolong a difficult delivery when a C-section was indicated.
  • Failure to treat maternal infection: Chorioamnionitis and Group B Streptococcus (GBS) can compromise the baby’s oxygen supply if untreated during labor.
  • Failure to initiate or delay in starting cooling therapy: If a hospital does not begin therapeutic hypothermia within the 6-hour window, or fails to transfer the baby promptly to an equipped facility, the resulting brain damage may have been avoidable.
  • Inadequate staffing or equipment: Hospitals without NRP-trained personnel or functioning resuscitation equipment at the time of delivery may fail to meet the standard of care.

If your baby was born not breathing and was later diagnosed with HIE or cerebral palsy, a thorough case review examines the complete medical record, including fetal monitoring strips, delivery notes, resuscitation timeline, and cooling therapy initiation, to determine whether preventable errors contributed to your child’s injury.

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