| Summary: | Background : The distance of skin to epidural space varies in insersion of epidural
needle so it greatly affect the identification of the epidural space and epidural
anesthesia complications. Therefore, it neededa predictions of skin to epidural
space distance to be careful in doing insertions.
Objectives :The purpose of this study was to find a relationship between body
mass index and the distance of skin to the epidural space in the lumbar epidural
anesthesia 3-4 in non-obstetric surgery.
Methods :This was a prospective observasional study with cross-sectional design
in 100 patients undergoing non-obstetric surgery with lumbar epidural anesthesia
3-4, consisting of men and women, aged 18-65 years with ASA physical status I -
II. Weight, height and body mass index were independent variable and skin to
epidural space distance was dependent variable. All data was collected and
analysed with multiple regression analysis and pearson corellation test to find a
relationship between body mass index and skin to epidural space distance.
Result :From October to desember 2011, 100 patients were collected. Mean of
weight was 57.35 (SD 11.59) kg, mean of height was 155.98 (SD 5.88)
centimeters, mean of body mass index was 23.52 (SD 4.26)kgm¯². Mean of skin to
epidural space distance was 40.89 (SD 9.945) mm. From the multiple regression
analysis, it was found that body mass index hada strongest significant relationt (r=
0.81
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