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Updated: Jan 1, 2026
Author Spotlight: Unraveling the Impact of Mechanical Ventilation on Diaphragm Function and Patient Outcomes
Published on: November 3, 2023
[Usefulness of diaphragmatic ultrasound in predicting extubation success]
F Varón-Vega1, Á Hernández2, M López2
1Unidad de Cuidado Intensivo Médico, Fundación Neumológica Colombiana, Bogotá, Colombia; Fundación Cardioinfantil-Instituto de Cardiología, Bogotá, Colombia; Departamento de Anestesiología y Cuidados Intensivos, Universidad de Navarra, Pamplona, España.
Objective:
To evaluate the diagnostic accuracy of diaphragmatic ultrasound in predicting extubation success.
Design:
A diagnostic accuracy study was carried out.
Scope:
Intensive Care Unit of an Academic hospital in the city of Bogotá (Colombia).
Patients Or Participants:
A consecutive sample of patients >18 years of age subjected to invasive mechanical ventilation for >48h.
Interventions:
Diaphragmatic ultrasound evaluation at the end of spontaneous ventilation testing.
Main Variables Of Interest:
Diaphragmatic excursion (DE, cm), inspiration time (TPIAdia, s), diaphragm contraction speed (DE/TPIAdia, cm/s) and total time (Ttot, s) were evaluated, together with thickening fraction (TFdi, %).
Results:
A total of 84 patients were included, 79.8% (n=67) with successful extubation and 20.2% (n=17) with failed extubation. The variable with the best discriminatory capacity in predicting extubation success was diaphragm contraction speed, with AUC-ROC 0.70 (p=0.008).
Conclusions:
Diaphragm contraction speed exhibited acceptable discriminatory capacity. Ultrasound could be part of a multifactorial approach in the extubation process.
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