• Tokai J. Exp. Clin. Med. · Jun 2004

    Comparative Study Clinical Trial Controlled Clinical Trial

    Straight advancement of epidural catheter--comparative assessments by method and site of epidural needle puncture and angle of puncture.

    • Kazuhide Takeyama, Hajime Yamazaki, Miho Maeda, Kyoko Tomino, and Toshiyasu Suzuki.
    • Department of Anesthesiology, Tokai University School of Medicine, Isehara, Kanagawa, Japan. takeyama@is.icc.u-tokai.ac.jp
    • Tokai J. Exp. Clin. Med. 2004 Jun 1;29(2):27-33.

    AbstractThe catheter straight advancement rate for introduction into the epidural space was investigated using a radiopaque catheter. One hundred patients were divided into two groups and underwent thoracic or lumbar epidural punctures, with one of two different puncture methods: the median approach or paramedian approach. Two different angles of epidural puncture needle insertion, 50-60 degrees and 90 degrees to skin surface plane, were used. A catheter was inserted into the epidural space about 5 cm cephalad and the course of the inserted catheter was ascertained by radiography. The results have shown that punctures performed at an insertion angle of 50-60 degrees yielded higher catheter straight advancement rates than those performed at an angle of 90 degrees in both thoracic and lumbar epidural punctures.

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