Apgar Score
Compute newborn Apgar score (5 criteria × 0-2 = 0-10).
Apgar score: newborn assessment
The Apgar score rates a newborn at 1 and 5 minutes after birth, with a third reading at 10 minutes when the 5-minute score comes in below 7. There are five parameters, each worth 0–2 points, and you add them up to land somewhere between 0 and 10: Appearance (color), Pulse (heart rate), Grimace (reflex response), Activity (muscle tone), and Respiration. How to read the total: 7–10 normal, 4–6 moderate concern (the baby may need stimulation or oxygen), 0–3 severe (resuscitation needed). Example: a baby with a pink body but blue extremities (1), heart rate 120 (2), a strong cry to stimulation (2), active movement (2), and a strong cry (2) lands at Apgar 9.
Clinical context
The anesthesiologist Virginia Apgar came up with it in 1952 to give newborn evaluation a common standard. One thing it does not do is predict long-term neurological development. A low 1-minute Apgar shows up often even in perfectly healthy babies. What does warrant a closer look is an Apgar below 7 at 5 minutes. You'll find it in delivery rooms, neonatology units, newborn medical records, hospital quality indicators, and the Brazilian civil registry. Don't lean on it alone to guide resuscitation, though. In the first minute, the Neonatal Resuscitation Program (NRP) algorithm comes first.
FAQ
Does a low Apgar mean brain damage? No. An Apgar of 0–3 at 5 minutes does raise the risk, but most babies who score low go on to develop normally. Cerebral palsy tracks more closely with cord blood gases and prolonged depression than with the score itself.
Why score at 1 and 5 minutes? The 1-minute reading tells you about intrauterine conditions and how the baby adapted right away. The 5-minute reading shows how the baby responded to whatever was done in the meantime, and it carries more weight as a prognosis.
Is there an Apgar for preterm babies? Yes, but read it carefully. Tone and reflexes are naturally lower in preterm infants, so the numbers often come out artificially low.
Who scores the newborn? The pediatrician, or a trained nurse or midwife, whoever is present at the delivery. They usually do it without breaking off any resuscitation maneuvers in progress.
Related Tools
Wilson Interval (Proportion)
Computes the Wilson confidence interval for a proportion, the modern alternative to the Wald interval (the p̂ ± z·SE formula you learn first). The Wald interval fails badly with small samples or proportions near 0 or 1 — it can even produce negative bounds. Wilson's fixes this by inverting the score test, which keeps it inside [0, 1] with much better coverage. It's the recommended interval for proportions. Enter the successes, the total and the confidence level.
Apgar Score Calculator and Interpretation
Adds the five newborn signs, appearance, pulse, grimace, activity and respiration, scored 0 to 2: 7 to 10 is normal, 4 to 6 moderate, 0 to 3 severe asphyxia.
Wave Group Velocity
Calculate the group velocity of an ocean wave in deep water, c_g = g·T ÷ (4π), from the period T (s). The result, in m/s, is the speed at which the wave energy (and the 'envelope' of a wave group) propagates — exactly half the celerity (phase velocity) in deep water. This difference explains a curious phenomenon: within a wave group, individual crests appear at the rear, advance through the group (faster than it) and disappear at the front. The group velocity is what matters for energy transport and predicting swell arrival at the coast. Enter the wave period.
Equivalent Stiffness (Springs in Series)
Calculate the equivalent stiffness of two springs in series, 1 ÷ k_eq = 1/k₁ + 1/k₂, from the individual stiffnesses k₁ and k₂. The result, in the same unit (N/m), is always smaller than the smallest stiffness — springs in series are more flexible, since each deforms under the same force and the displacements add. It is the fundamental calculation to reduce suspension systems, isolators and structures with elastic elements in sequence to a single-degree-of-freedom model, the basis for finding the natural frequency. Enter the two stiffnesses.
LCM Calculator (Two Numbers)
Calculate the least common multiple (LCM) of two integers. See the steps using the relation LCM = |a·b| / GCD. Handy for fractions and school problems.
Gestational Age
Compute gestational age in weeks/days from LMP to today.
The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.