Apgar Score: Criteria, 8-9 Scores, Interpretation

1. History and author

• Developed by the American anesthesiologist Virginia Apgar in 1952.
• The goal is to standardize the assessment of a newborn's condition immediately after birth.
• The acronym APGAR was proposed in 1962 (Appearance-Pulse-Grimace-Activity-Respiration).
• Since the 1960s, it has been a routine standard worldwide, and is mandatory in Russia by order of the Russian Ministry of Health.

2. Five criteria and scoring

3. When and how to assess

• The first assessment is performed at the 1st minute of life (reflects intrauterine/intrapartum status).
• The second is at the 5th minute (reflects adaptation efficiency and early intervention).
• If the score is ≤ 7 at the 5th minute, assessment is continued every 5 minutes up to 20 minutes or until a score of ≥ 7 is reached.
• The assessment is performed independently of resuscitation measures (mechanical ventilation, chest compressions) — recording the infant's actual state.
• It is documented in the newborn's medical record as "Apgar 1/5 min".

4. Score interpretation

5. Connection to resuscitation

• The decision to resuscitate is made in the first 30 seconds — do not wait for the 1-minute mark.
• Criteria for starting resuscitation: absent/ineffective breathing, heart rate < 100 bpm, severe hypotonia.
• NRP algorithm (Neonatal Resuscitation Program, AHA/AAP 2020/2023): "warm, dry, stimulate, clear airways" → bag-mask ventilation for 30 s → if HR < 60 → chest compressions 3:1 + 100% O₂ → IV epinephrine 0.01–0.03 mg/kg.
• The Apgar score is a retrospective assessment, not a determining criterion for initiating resuscitation.

6. Limitations of the scale

• Subjectivity (especially "coloration" and "reflex irritability").
• Does not account for the cause of a low score (asphyxia vs. drug depression from maternal opioids, prematurity).
• In preterm infants (< 32 weeks), the score is consistently underestimated due to immaturity — separate scales are required (Silverman-Anderson score for respiratory distress).
• Does not correlate definitively with long-term neurological prognosis.
• Does not replace cord blood gas analysis for diagnosing intrahepatic hypoxia (umbilical artery pH < 7.0 + base deficit > 12 mmol/L are objective markers).

7. Prognostic Value

• Apgar 0–3 at the 5th minute — an 8-fold higher risk of neonatal mortality.
• Apgar ≤ 3 at the 10th and 20th minutes — a significant risk factor for cerebral palsy and epilepsy.
• An isolated low score at the 1st minute without a low score at the 5th minute generally carries a favorable prognosis.
• Combination of Apgar + umbilical artery pH + clinical presentation of hypoxic-ischemic encephalopathy (Sarnat HIE) — the basis for the decision on therapeutic hypothermia.

8. Therapeutic Hypothermia

• Indicated in moderate/severe HIE in term infants (≥ 36 weeks).
• Criteria (combination): Apgar ≤ 5 at the 10th min OR mechanical ventilation ≥ 10 min OR cord pH < 7.0 OR BE > 16 + neurological symptoms (Sarnat HIE stage II–III).
• Initiate within 6 hours of birth.
• Target temperature 33.5 °C × 72 hours → slow rewarming.
• Reduces mortality and severe disability by ~15%.

9. Features in Preterm Infants

• Apgar scores in infants < 32 weeks are systematically lower due to muscle tone, respiration, and reflexes.
• Specialized scales CRIB II and SNAPPE-II — for prognosis in the NICU.
• Silverman-Anderson score — assessment of RDS severity.
• Ballard score — assessment of gestational age based on morphology.

10. Legal and Documentation Aspects

• The Apgar score is recorded in the labor and newborn medical records.
• Serves as the primary retrospective documentary marker of intrahepatic status.
• Precise recording of the 1st and 5th-minute times is crucial (using the resuscitation table clock).
• In case of low scores, documentation of performed interventions and cord blood gases is mandatory.

11. Clinical Assessment Example

• Newborn 3200 g, 39 weeks, vertex presentation, meconium-stained amniotic fluid.
• At 1st min: HR 90 (1), weak cry (1), acrocyanosis (1), slight flexion (1), grimace (1) → 5 points.
• Suctioning, tactile stimulation, mask ventilation for 30 s.
• At 5th min: HR 140 (2), loud cry (2), pink (2), active movements (2), regular breathing (2) → 10 points.
• Interpretation: moderate asphyxia at the 1st min with favorable adaptation by the 5th min.

12. FAQ

What does "Apgar 7/8" mean?
7 points at the 1st minute (mild asphyxia, usually respiratory) and 8 at the 5th minute (normal). Reflects good early adaptation.

Why is the maximum 10 instead of 12?
5 criteria × 2 points = 10. This is a maximum that is rarely encountered in clinical practice (more often 8–9 due to acrocyanosis).

Does the Apgar score affect a child's IQ?
An isolated low score at the 1st minute does not. Severe asphyxia at the 5th and 10th minutes (0–3) + HIE does increase the risk of neurological sequelae.

Should the Apgar score be assessed if the infant requires intubation from the first minute?
Yes. The assessment is performed independently of ongoing interventions. The actual condition is recorded along with a separate line detailing the interventions performed.

Why is cord pH more accurate?
It is an objective biochemical marker of intrahepatic hypoxia, independent of the observer. pH < 7.0 + BE > 12 confirms metabolic acidosis; the Apgar score merely describes the adaptation phenotype.

See also: Physiological childbirth · Neonatal asphyxia · RDS in preterm infants · HIE · Pediatrics Catalog