Nitrous Oxide Dosing Calculator
Calculate N2O/O2 flow rates and gas consumption for pediatric dental sedation based on patient weight, target concentration, and procedure duration.
Inputs
%
Results
Total gas flow (L/min)
6
N2O flow rate (L/min)1.8
O2 flow rate (L/min)4.2
Actual O2 percentage (%)70
N2O consumed (L)54
Total O2 needed (L)156
Titration steps to target1
Safety alert0
How to Use This Calculator
- Enter the patient's weight in kg and the Target N2O concentration (20–50%) — typical pediatric dental sedation uses 30–40%.
- Enter the expected Procedure duration in minutes and set Sedation level (1 = minimal anxiolysis, 2 = moderate sedation).
- Review the Total gas flow (L/min), N2O flow rate (L/min), and O2 flow rate (L/min) to set your flowmeter.
- Verify the Actual O2 percentage — this must remain ≥ 30%; if the Safety alert flag = 1, increase O2 flow before proceeding.
- Note the Titration steps from 20% to your target concentration, N2O consumed (L), and Total O2 needed including the mandatory 5-minute post-procedure oxygen flush.
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