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Korean Journal of Anesthesiology 1993;26(2):299-302.
DOI: https://doi.org/10.4097/kjae.1993.26.2.299   
The Measurement of Distance from Skin to the Epidural Space in Parturients.
Ae Ra Kim, Jae Kyu Cheun, Sung Koo Choi, Jung In Bae
Department of Anesthesiology, Keimyung University School of Medicine, Taegu, Korea.
Lumber epidural analgesia is a well established method of providing pain relief during labor. Placement of a needle in the epidural space is probably one of the more tephnically demanding procedures which are performed by anesthesiologists. Two-hundred-thirty-four women receiving epidural analgesia during labor were studied. The distance from skin to the epidural space was measured with Portex disposable epidural needle marked at 1 cm intervals. The mean distance was found to be 4.18 cm. There was no correlation between distance from skin to the epidural space and height, hut was signifieant correlation with weight(p<0.001). The epidural depths were identified most frequently at 3 to 4 cm deep and 84.2% of total cases were less than 5 cm deep. This study suggests that, if the epidural space has not been identified within a depth of 6 cm, redirection or reinsertion of the needle should be considered.
Key Words: Epidural analgesia; Labor pain; Epidural depth


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