Antenatal Steroid Benefit Gestational Age Window

Antenatal corticosteroids reduce neonatal morbidity and mortality when given for threatened preterm birth. Strongest benefit: 24–34 weeks. Benefit at 34–36+6 weeks (late preterm): reduces RDS and NICU admission. Periviable (22–23 weeks): consider with neonatal team. No benefit at ≥37 weeks. Administer both doses before delivery for maximum effect.

Weight
Height
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 to Use

Enter the values for the scenario you are assessing. Antenatal corticosteroids reduce neonatal morbidity and mortality when given for threatened preterm birth. Strongest benefit: 24–34 weeks. Benefit at 34–36+6 weeks (late preterm): reduces RDS and NICU admission. Periviable (22–23 weeks): consider with neonatal team. No benefit at ≥37 weeks. Administer both doses before delivery for maximum effect. Use the steroid benefit window result to inform your calculation.

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