Is a double-injection technique superior to a single injection in posterior subgluteal sciatic nerve block?

被引:15
|
作者
Taboada, M
Alvarez, J
Cortés, J
Rodríguez, J
Atanassoff, PG
机构
[1] Univ Santiago de Compostela, Hosp Clin, Serv Anestesia, Dept Anesthesiol, Santiago De Compostela 15706, La Coruna, Spain
[2] Yale Univ, Sch Med, Dept Anesthesiol, New Haven, CT 06510 USA
关键词
sciatic nerve block; regional anesthesia; subgluteal approach; Local anesthetics : ropivacaine;
D O I
10.1111/j.1399-6576.2004.00441.x
中图分类号
R614 [麻醉学];
学科分类号
100217 ;
摘要
Bckground and objectives: Currently, no information is available on the effects of a double-injection technique on onset time and efficacy following subgluteal sciatic nerve blockade. We hypothesized that the success rate and time to onset of subgluteal nerve block following, a double-injection technique would be superior to that after a single injection. Methods: Fifty ASA I or II patients undergoing foot or ankle surgery randomly received a single or double injection subgluteal sciatic nerve block. Group S (n = 25) received a single injection of 30 nil of 0.75% ropivacaine to the sciatic nerve. In Group D (n = 25), 15 ml of the same solution was injected to each sciatic nerve component. Completion of sensory and motor blockade, and patient acceptance, was evaluated by a blinded anesthesiologist. Results: Complete sensory and motor blockade of the foot was achieved faster with the double injection (7.4 [5.9-8.8] min and 12.3 [10.4-14.2] min, respectively) than with the single-injection technique (12.5 [10.7-14.3] min and 18.8 [16.7-21.0] min, respectively) (P<0.001 and P<0.001, respectively). Success rate and acceptance were similar in both groups. Severe or moderate discomfort during the procedure was less frequent after a single injection (P = 0.013). Conclusions: Both the single- and double-injection technique for subgluteal sciatic nerve blockade resulted in acceptable anesthesia in, most patients. The, double injection generated a faster onset of anesthesia than the single injection. However, the double-injection technique caused more patient discomfort during establishment of the nerve block.
引用
收藏
页码:883 / 887
页数:5
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