Calculators
Core bedside calculations, each with the formula, its source and the date NICUlearn checked it.
For education. Check against your unit's guidance and a second clinician before use.
Admission and procedures
Quick reference
- Apgar scoreScores a newborn's condition at 1, 5 and 10 minutes after birth (0 to 10).
- Where to look: key neonatal guidelinesQuick links to the official charts and algorithms NICUlearn doesn't reproduce, UK first with the main international equivalents: hypoglycaemia, jaundice thresholds, newborn resuscitation, deterioration, infection, cooling, preterm care and medicines.
Breathing
- Oxygenation index and oxygen saturation indexHow much ventilator support a baby needs for their oxygen level: the oxygenation index (with an arterial PaO2) and the oxygen saturation index (with SpO2, when there is no arterial gas).
- Bronchopulmonary dysplasia gradeGrades BPD in a preterm baby (born before 32 weeks) by the breathing support needed at 36 weeks' postmenstrual age (Jensen 2019 definition).
Brain
- Thompson HIE scoreScores the neurological examination of a baby with hypoxic-ischaemic encephalopathy (0 to 22), repeated over the first days to follow its course.
- Cooling eligibility checklistSteps through the criteria for therapeutic hypothermia (cooling) for a baby with suspected hypoxic-ischaemic encephalopathy.
- Modified Sarnat stagingGrades neonatal encephalopathy from the neurological examination (as used in cooling trials): six categories, each normal, moderate or severe.
- Intraventricular haemorrhage gradingGrades germinal matrix and intraventricular haemorrhage on cranial ultrasound (Papile grades I to IV).
Infection
Gut and eyes
- Modified Bell's staging for NECStages necrotising enterocolitis from systemic signs, abdominal signs and X-ray findings (stages IA to IIIB).
- Retinopathy of prematurity: who to screen, and classificationChecks a baby against the UK and US ROP screening criteria, with the international classification (zones, stages, plus disease) for reading eye reports.