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Updated: Nov 8, 2025
A Structured Approach to Extubation in Mechanically Ventilated Rats
Published on: July 18, 2025
Association of independent risk factors with post-extubation failure in patients undergoing mechanical ventilation
Martín Santibañez-Velázquez1, Gabriela Medina-García1, María E Ocharán-Hernández2
1Specialty Hospital, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social.
Introduction:
Even with an adequate mechanical ventilation weaning (MVW) protocol, the procedure fails in 15 to 30 % of cases.
Objective:
To assess the association between independent risk factors (IRFs) and post-extubation failure in patients undergoing MVW in an intensive care unit.
Method:
Longitudinal, prospective, analytical cohort study in patients on mechanical ventilation for more than 24 hours and who were extubated. Pre-extubation reports of hemoglobin, albumin, phosphorus, waist-hip ratio and SOFA score were obtained. Extubation failure was defined as resumption of mechanical ventilation within 48 hours or less.
Results:
123 patients were extubated, out of whom 74 were males (60 %); average age was 50 ± 18 years. Extubation failure occurred in 37 (30 %). Hypoalbuminemia was associated as an independent risk factor in 29 (23.8 %, RR = 1.43, 95 % CI = 1.11-1.85) and hypophosphatemia was in 18 (14.6 %, RR = 2.98, 95 % CI = 1.66-5.35); two or more IRFs were observed in 22.7 % (RR = 1.51, 95 % CI = 1.14-2.00).
Conclusions:
Identifying independent risk factors prior to MVW can help reduce the risk of extubation failure and associated morbidity and mortality.
IntroduccióN:
Aun con adecuado protocolo de desconexión de la ventilación mecánica (DVM), el procedimiento falla en 15 a 30 % de los casos.
Objetivo:
Evaluar la asociación entre factores de riesgo independientes y fracaso posextubación en pacientes con DVM en una unidad de cuidados intensivos.
MéTodo:
Estudio de cohorte, longitudinal, prospectivo, analítico, que incluyó pacientes sometidos a ventilación mecánica por más de 24 horas y que fueron extubados. Se obtuvieron reportes preextubación de hemoglobina, albúmina, fósforo, índice cintura-cadera y puntuación SOFA. Se definió como fracaso de extubación al reinicio de la ventilación mecánica en 48 horas o menos.
Resultados:
Se extubaron 123 pacientes, 74 hombres (60 %); la edad promedio fue de 50 ± 18 años. Ocurrió fracaso de extubación en 37 (30 %). Como factores de riesgo independentes se asoció hipoalbuminemia en 29 (23.8 %, RR = 1.43, IC 95 % = 1.11-1.85) e hipofosfatemia en 18 (14.6 %, RR = 2.98, IC 95 % = 1.66-5.35); se observaron dos o más factores de riesgo independientes en 22.7 % (RR = 1.51, IC 95 % = 1.14-2.00).
Conclusiones:
Identificar los factores de riesgo independentes antes de la DVM puede ayudar a reducir el fracaso de la extubación y la morbimortalidad asociada.
Insights
Identifying low albumin and phosphorus levels before mechanical ventilation weaning can help predict and reduce extubation failure in ICU patients. This proactive approach aids in managing patient outcomes and preventing reintubation.
Area of Science:
- Critical Care Medicine
- Pulmonology
- Internal Medicine
Background:
- Mechanical ventilation weaning (MVW) protocols aim to safely discontinue respiratory support.
- Despite adequate protocols, MVW failure occurs in 15-30% of cases, leading to prolonged ICU stays and increased mortality.
Purpose of the Study:
- To determine the association between independent risk factors (IRFs) and post-extubation failure.
- To identify specific pre-extubation markers predictive of extubation success.
Main Methods:
- A prospective, analytical cohort study was conducted on 123 patients requiring mechanical ventilation for over 24 hours.
- Pre-extubation assessments included hemoglobin, albumin, phosphorus, waist-hip ratio, and SOFA score.
- Extubation failure was defined as the need for reintubation within 48 hours.
Main Results:
- Extubation failure occurred in 37 (30%) of the patients studied.
- Hypoalbuminemia (23.8%) and hypophosphatemia (14.6%) were identified as significant independent risk factors for extubation failure.
- Patients with two or more IRFs had a 1.51-fold increased risk of failure.
Conclusions:
- Pre-extubation identification of IRFs like hypoalbuminemia and hypophosphatemia is crucial for predicting extubation failure.
- Proactive management of these factors can potentially reduce extubation failure rates, morbidity, and mortality.
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