Abstract

GAONA-RAMIREZ, Martha Isabel. Self-identification of the waist - useful in the location of the puncture site in neuroaxial anesthesia of obstetric patient with class III obesity. Rev. mex. anestesiol. [online]. 2021, vol.44, n.4, pp.250-257.  Epub Oct 11, 2021. ISSN 0484-7903.  https://doi.org/10.35366/100869.

The neuraxial anesthetic technique in the obese class III, pregnant patient, can represent a challenge for the anesthesiologist, due to the difficulty in recognizing the anatomical landmarks. The objective of the study was to determine the difficulty and quality of combined spinal/epidural anesthesia, in 14 pregnant patients with a body mass index ≥ 40 kg/m2 scheduled for cesarean section. For the location of the puncture site, self-identification of the waist was used, a methodology that has not been previously reported. The patients straddled the surgical Table, pointing to her waist with both hands. Two lines were drawn on the back. A horizontal line at the waist, indicated by the patient, and a vertical line corresponding to the midline. The intersection of the two lines was the coordinate for the neuraxial puncture. The mean ± SD of the body mass index was 47.5 ± 3.7 kg/m2. A first level success rate of 92.8% was determined, 57.1% of the patients received one puncture, and the average of punctures was 1.5. Spinal/epidural anesthesia failed in two cases, a change from anesthetic technique to epidural and supplementation with infiltration was performed, with adequate analgesia. It was not necessary to convert to general anesthesia in any case. Self-identification of the waist and coordinate marking can be a clinical aid for the identification of the lumbar puncture site, during the installation of neuraxial anesthesia, in obstetric patients with class III obesity, scheduled for cesarean section.

Keywords : Waist; coordinate; puncture; anesthesia; neuraxial; obesity; cesarean section.

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