Apgar score: scoring, interpretation and limitations
The Apgar score is a structured description of a newborn’s condition at 1 and 5 minutes after birth using Appearance, Pulse, Grimace, Activity and Respirations. Each item scores 0, 1 or 2, giving a maximum of 10. It communicates response to transition and resuscitation; it does not replace clinical assessment or determine whether resuscitation should begin.
Start resuscitation according to breathing, heart rate and tone—never wait for the 1-minute Apgar score.
Components and scoring
| Component | 0 | 1 | 2 |
|---|---|---|---|
| Appearance | Blue/pale | Body pink, extremities blue | Completely pink |
| Pulse | Absent | Below 100/min | 100/min or more |
| Grimace/reflex response | No response | Grimace | Cough, sneeze or active response |
| Activity/tone | Limp | Some flexion | Active movement |
| Respirations | Absent | Slow/irregular or weak cry | Good breathing/cry |
When and how to score
- At one minute, score the infant’s condition and document any concurrent support.
- At five minutes, repeat. If below 7, continue scoring every five minutes up to 20 minutes while resuscitation/observation continues.
- Record each component separately, the total, gestational age, interventions and timing—not only the total.
- Use a preterm-appropriate clinical context: prematurity, maternal drugs, congenital anomalies, infection and hypothermia can lower scores.
Interpretation
- 7–10: generally reassuring transition, but continue routine observation and assess any abnormal component.
- 4–6: moderately depressed; reassess airway, breathing, heart rate, temperature and glucose and provide indicated support.
- 0–3: severely depressed; immediate neonatal resuscitation and urgent escalation are required.
A score can improve after ventilation, stimulation, oxygen or other interventions. A low score at one minute may reflect transition; persistent low scores at 5–10 minutes are concerning and require documentation and evaluation.
Relation to resuscitation
Resuscitation follows the newborn algorithm: warmth, drying, positioning, stimulation, assessment of breathing and heart rate, effective ventilation when needed, and escalation according to response. Apgar scoring is performed while care continues. An infant receiving ventilation may have a low respiratory score despite appropriate treatment; document the intervention-modified score and the score that reflects the infant’s condition.
Documentation example
“Apgar 1 min: 5 (HR 1, respirations 1, tone 1, reflex 1, colour 1); positive-pressure ventilation initiated at 60 seconds. Apgar 5 min: 8 (HR 2, respirations 2, tone 2, reflex 1, colour 1). Continued observation; no seizures or respiratory distress.” This is more useful than “Apgar 5/8” alone.
Common errors
- Using Apgar to decide whether to start resuscitation.
- Scoring colour without considering peripheral cyanosis in a normal transition.
- Failing to score after 5 minutes when the score remains low.
- Ignoring gestation, maternal sedation or congenital anomaly.
- Calling a low score “asphyxia” without neurological, metabolic and organ evidence.
Exam pearls
- Apgar is Appearance, Pulse, Grimace, Activity, Respirations.
- Pulse below 100 scores 1; absent pulse scores 0.
- Resuscitation must not be delayed for scoring.
- Persistent low scores require escalation and documentation, not a single label.
References
- SlideShare: Apgar score.
- American Academy of Pediatrics: The Apgar Score.
- Current neonatal resuscitation programme guidance.
