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Calcimator

Ventilator Weaning Calculator

Weaning readiness criteria assessment (RSBI, NIF, etc.).

Inputs

Results

RSBI (breaths/min/L)

40

Minute Ventilation (L/min)8.1
P/F Ratio225
Readiness Score (%)100%
Criteria Met (of 5)5
Prediction (0=Not Ready, 1=Marginal, 2=Ready)2
How to Use This Calculator
  1. Enter respiratory rate (breaths/min) and tidal volume (mL) from the ventilator display.
  2. Enter NIF/MIP (cmH2O), PaO2 (mmHg), and FiO2 (fraction) from current ventilator settings and ABG.
  3. Review the rapid shallow breathing index (RSBI = RR/VT) -- RSBI <105 supports weaning readiness.
  4. Check P/F ratio (PaO2/FiO2) -- above 200 generally supports weaning consideration.
  5. Review the composite readiness score and notes on factors that should be optimized before extubation.
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