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Índice de tiempo de excursión diafragmática como predictor de extubación en terapia intensiva / Diaphragmatic excursion time index as a predictor of extubation in intensive therapy

Salvador Domínguez-Estrada, Edgar Bravo-Santibañez, Xóchilt Ramos-Ramos, José Sergio López-Briones

Resumen


Resumen

Introducción:  la extubación es un proceso crítico en la UCI. El USG pulmonar tiene diferentes aplicaciones, algunas predicen el éxito en la extubación, como el índice de tiempo de excursión diafragmática (ITED).

Objetivo: determinar si el índice de tiempo de excursión diafragmática es predictor en el éxito del retiro de la ventilación mecánica en los pacientes en la unidad de terapia intensiva.

Material y métodos: estudio de rendimiento diagnóstico, en pacientes en UCI y en protocolo de extubación. Medición diafragmática por USG, evaluando ITED; punto de corte de 2.42 ± 1.55 cm/s. En la prueba de hipótesis se realizó entre las dos variables cualitativas JI cuadrada, para poder aceptar o rechazar H0, con una significancia estadística una p < 0.05 para determinar si existe dependencia entre las variables dependiente e independiente.

Resultados: se seleccionaron en total 200 pacientes de la población, con extubación exitosa en un 52.5% y fracaso a la extubación 47.5%. Los valores pronósticos del ITED fueron: S: 77.1%(68.2-84.1%), E: 56.8%(46.8-66.3%). Curva ROC para ITED, AUC de 0.665 (0.58-0.74; p = 0.001). En objetivos secundarios se realizó una correlación entre variables ventilatorias y demográficas para la extubación exitosa; con FvT (Rho: 0.680, p = 0.0001).

Conclusiones: el ITED para retiro de la ventilación mecánica, tiene un baja sensibilidad y especificidad como resultado de la extubación exitosa. El hallazgo de que el ITED no es un predictor adecuado que determinan el resultado de la extubación exitosa.

 

Abstract

Background: Extubation is a critical process in the ICU. Pulmonary USG has different applications, those that predict success in extubation, such as the diaphragmatic excursion time index (DEIT).

Objective: To determine the diaphragmatic excursion time index is a predictor of the success of weaning off mechanical ventilation in patients in the intensive care unit.

Material and methods: Diagnostic performance study in patients in the ICU and in the extubation protocol. Diaphragmatic measurement by USG, evaluating DEIT; cut-off point of 2.42 ± 1.55 cm/s. In the hypothesis test, a JI square was carried out between the two qualitative variables, in order to accept or reject H0, with a statistical significance of p < 0.05 to determine if there is dependence between the dependent and independent variables.

Results: Total of 200 patients from the population, with successful extubation in 52.5% and extubation failure in 47.5%. Prognostic values of the DEIT were: S: 77.1% (68.2-84.1%), E: 56.8% (46.8-66.3%). ROC curve for ITED, AUC of 0.665 (0.58-0.74; p = 0.001). In secondary objectives, a correlation was made between ventilatory and demographic variables for successful extubation; with FvT (Rho: 0.680, p = 0.0001).

Conclusions: The DEIT for withdrawal of mechanical ventilation has low sensitivity and specificity as a result of successful extubation. The finding that DEIT is not an adequate predictor determining the outcome of successful extubation.


Palabras clave


Respiración Artificial; Diafragma; Ultrasonido; Cuidados Críticos / Respiration, Artificial; Diaphragm; Ultrasonics; Critical Care

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Referencias


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DOI: https://doi.org/10.24875/10.5281/zenodo.11396976

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