Phototherapy Bhutani Nomogram Threshold

Determine phototherapy initiation threshold for neonatal jaundice based on total serum bilirubin, postnatal age in hours, and gestational age risk category using the Bhutani hour-specific nomogram.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Determine phototherapy initiation threshold for neonatal jaundice based on total serum bilirubin, postnatal age in hours, and gestational age risk category using the Bhutani hour-specific nomogram

Each component has a specific meaning:

  • Postnatal age in hours — The postnatal age in hours recorded for the scenario being assessed.
  • Gestational age risk category — The gestational age risk category recorded for the scenario being assessed.

Note: Interpret the bhutani phototherapy result against the thresholds and context described above.

How to Use

Enter the postnatal age in hours, gestational age risk category for the scenario you are assessing. Determine phototherapy initiation threshold for neonatal jaundice based on total serum bilirubin, postnatal age in hours, and gestational age risk category using the Bhutani hour-specific nomogram. Use the bhutani phototherapy result to inform your calculation.

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Frequently Asked Questions