Back to Calculators

Inspiratory Time (Ti)

Inspiratory time (Ti) is calculated from the respiratory rate and I:E ratio. Appropriate Ti ensures adequate gas delivery and prevents air trapping.

Disclaimer

This calculator is for educational purposes only. Always verify with clinical judgment.

Calculator

Respiratory Rate (breaths/min)

I:E Ratio

I (Inspiratory)

:

E (Expiratory)

Formulas

TCT = 60 / RR

Ti = TCT / (1 + E/I)

References

Walsh BK. Neonatal and Pediatric Respiratory Care, 5th Edition.
Hess DR, Kacmarek RM. Essentials of Mechanical Ventilation, 4th Edition.