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Korean J Anesthesiol. 1994 Jun;27(6):609-615. Korean. Original Article.
Bae SH , Chung CJ , Chin YJ .
Department of Anesthesiology, College of Medicine, Dong-A University, Pusan, Korea.

Spinal and epidural anesthesia were performed with a 26 gauge, long spinal needle through a 17 gauge Tuohy needle in thirty patients undergoing elective Caesarian section. To study the effects of subarachnoid local anesthetic solution, the thirty patients were classified into 3 groups on the anesthetics used respectively; a group treated with 0,5% hyperbaric tetracaine 10 mg alone (group I), a group treated 0.5% hyperbaric tetracaine 10 mg and fentanyl 10 mg (group II), a group treated 0.5% hyperbaric tetracaine 10 mg, fentanyl 10 ug and epinephrine 0.3 mg (group III). Each group contained 10 patients. The results were as follows. 1) Onset time of analgesia to T10 sensory level was significantly longer in group IlI than in remained groups and that to T4 sensory level was significantly shorter in group II than in other groups (p<0.05). 2) The time recovered from motor and sensory block was significantly longer in group III than in other groups (p<0.05). 3) The time requiring fentanyl from postoperative pain was significantly longer in group III than in other groups (p<0.05). 4) Complications after postoperative pain block were as follows; delayed awakening (3 cases), itching (3 cases), and one was nausea and vomiting. However serious complications such as respiratory depression did not occurred. In summary, We can concluded that use of needle-through-needle method of anesthesia for elective Caesarian section has benifits not only of spinal anesthesia but also of facilitating postoperative pain block.

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