3. Results
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SECONDARY, GROUP B, COMPLICATIONS
Overall, 118 women were recruited for the study from April 2021 to December 2021.After exclusion, 54 patients were randomized to ultrasound-assisted group (Group A) and traditional landmark-guided group (Group B). Three people in each group were excluded in the final analysis with the number of punctures was >5, and they were changed to general anesthesia (Fig. patient characteristics of both groups.Values are expressed as mean ± standard division, or numbers (percentages).ASA = American Society of Anesthesiologists, BMI = body mass index.Acquired from Student Acquired from χThe primary and secondary outcomes were shown in Table Primary and secondary outcomes.Values are described as median (interquartile range), number (percentage), or average rank.CSEA = combined spinal epidural anesthesia.Acquired from χAcquired from Fisher exact test.Acquired from Mann–Whitney Anesthesia characteristics and complications were presented in Table Anesthesia characteristics and complications.Data are presented as numbers (percentages).Acquired from χAcquired from Fisher exact test.