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.com
Volume 6, Issue 4(Suppl)
OMICS J Radiol, an open access journal
ISSN: 2167-7964
Medical Imaging and Clinical Research 2017
September 11-12, 2017
September 11-12, 2017 | Paris, France
2
nd
World Congress on
Medical Imaging and Clinical Research
Diaphragmatic Shortening Fraction and Pulmonary Ultrasound Combined Analysis For Extubation Success
Prediction in Critical Care Patients
Claudia Paola Rivera Uribe
Nuevo León Autonomous University, Mexico
I
nvasive respiratory support is a cornerstone of Critical Care Medicine, however, protocols for withdrawal of mechanical ventilation
are still far from perfect. Failure to extubation occurs in up to 20% of patients, despite a successful spontaneous breathing trial
(SBT). We prospectively included ventilated patients admitted to medical and surgical intensive care unit in a university hospital in
northern Mexico. At the end of a successful SBT, we measured Diaphragmatic Shortening Fraction (DSF) at the end of inspiration and
at the end of expiration, and the presence of B-lines in five zones of the right and left lung. The primary objective was to determine
whether analysis of DSF and Pulmonary Ultrasound improves prediction of extubation success. Eighty-two patients were included,
24 (29.2%) failed to extubation. At univariate analysis, DSF (Youden’s J: > 30% [sensibility and specificity 62 and 50%, respectively])
and number of B-lines zones (Youden’s J: > 1 zone [sensibility and specificity 66 and 92%, respectively]) were significant related to
extubation failure (area under the curve 0.664 [0.526 to 0.801] and 0.819 [0.703 to 0.934], respectively). At the binomial logistic
regression, only the number of B-lines zones remains significantly related to extubation failure (OR 5.91 [2.33-14.98], p < 0.001). In
patients with a successfully SBT, the absence of B-lines significantly decreases the probability of extubation failure. DSF analysis does
not add predictive power over the use of pulmonary ultrasound.
Biography
Claudia Paola Rivera Uribe has completed her medical school at the age of 24 years from Guadalajara University and posgrade studies from Nuevo León
Autonomous University. She is Chief of Residents of Pulmonary and Critical Care Medicine.
pru_87@hotmail.comClaudia Paola Rivera Uribe, OMICS J Radiol 2017, 6:4(Suppl)
DOI: 10.4172/2167-7964-C1-013