• Rev Bras Anestesiol · Jul 2010

    Clinical Trial

    Evaluating the depth of the epidural space with the use of ultrasound.

    • Pablo Escovedo Helayel, Diogo Bruggemann da Conceição, Gustavo Meurer, Claudia Swarovsky, and Getúlio Rodrigues de Oliveira Filho.
    • Hospital Governador Celso Ramos. pehelayel@hotmail.com
    • Rev Bras Anestesiol. 2010 Jul 1;60(4):376-82.

    Background And ObjectivesThe objective of the present study was to evaluate the use of the ultrasound on the determination of the depth of the epidural space.MethodsSixty patients were included in this prospective study; the L(3)-L(4) space was initially identified by palpation followed by the ultrasound measuring the depth of the epidural space (PU). After the epidural puncture the measurements o the depth (PA) were recorded. The data underwent descriptive statistics, and the concordance correlation coefficient and Bland-Altman analysis, with 95% confidence interval were calculated.ResultsAnalysis of concordance between the palpation and ultrasound methods was 86.6%. Mean values of PU obtained were 4.97 +/- 0.51 cm and PA 4.97 +/- 0.71 cm, and Pearson correlation coefficient of 0.66 while Bland-Altman analysis revealed a mean difference of 0.0035 +/- 0.53 cm with 95% confidence interval between -0.228 and 0.221.ConclusionsThe ultrasound is a precise tool to determine the depth of the epidural space.Copyright 2010 Elsevier Editora Ltda. All rights reserved.

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