Therese Lindberg

therese.lindberg@cambio.se

@CambioCDS

Estimates depth of optimal ETT placement and target tidal volume by height.

Use in patients over 20 years old. Chula formula: ETT depth = 0.1 * [height (cm)] + 4 Additional formulas: Ideal body weight (IBW), men = 50 kg + 2.3 * [height (in) – 60] IBW, women = 45.5 kg + 2.3 * [height (in) – 60] Usual tidal volume target = 6-8 mL/kg IBW

Do not use in patients younger then 20 years old.

1. ARDSnet investigators. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. N Engl J Med. 2000; May;342(18): 1301-1308. 2. Techanivate A, Kumwilaisak K, Samranrean S. Estimation of the proper length of orotracheal intubation by Chula formula. J Med Assoc Thai. 2005 Dec;88(12):1838-46

OBSERVATION.height.v2, OBSERVATION.basic_demographic.v1, EVALUATION.ett_depth_tidal_volume_calculator.v0, OBSERVATION.ideal_body_weight.v1