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ID 900
file
creator
Shiroyama, Kazuhisa
Izumi, Hiromichi
Kubo, Takashi
Nakamura, Ryuji
subject
Distance
Epidural space
Lumbar interspace
Obstetric
NDC
Medical sciences
abstract
We prospectively examined the distance from the skin to the epidural space (SE distance) in 95 Japanese parturient women who underwent epidural anesthesia at the L1-2 interspace, and studied the correlation between various physical factors and SE distance. The same anesthesiologist inserted the epidural tubing with the patient in the right lateral decubitus position. An epidural needle was introduced into the skin vertically via the midline approach. The epidural space was located using the loss-of-resistance technique. SE distance was measured to the nearest 0.5 cm using centimeter markings on the shaft of the epidural needle. The median value of SE distance was 3.5 cm, with a range of 2.5 to 6.5 cm, and in 800f cases SE distances were 3 to 4 cm. The correlation of body weight with SE distance was the highest of the physical factors (r^2 = 0.800, p = 0.0001), and a simple regression equation was formulated to aid in predicting SE distance: 'SE distance (cm) = 0.05 × body weight (kg) + 0.36'. This formula will be a useful clinical guide for administering epidural anesthesia in Japanese parturient women. In conclusion, the SE distance in most Japanese parturient women is between 3 and 4 cm at the L1-2 interspace and this value is most closely correlated with their body weight.
journal title
Hiroshima Journal of Medical Sciences
volume
Volume 52
issue
Issue 2
start page
27
end page
29
date of issued
2003-06
publisher
Hiroshima University Medical Press
contributor
国立情報学研究所
date of created
2006-03-21
issn
0018-2052
ncid
language
eng
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Biomedical Science
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