Introduction & Objective: Brachial plexus block is the most popular peripheral neural blockade that can take action in many anatomic locations. Surgical procedure can be performed on this block upon elbow, hand and forearm. Serveral studies noted that adding chemiclas such as epinephrine and narcotics to local anesthetics enhance the quality and duration of anesthesia. The aim of this study was to compare the effects of fentanyl added to lidocaine for axillary block on duration of anesthesia.
Material & Methods: This is a duble-blinded clinical trail, wich performed on 60 patients with ASA class I and II that scheduled for elective hand and forearm surgery. This study was performed in Tabriz Shohada hospital in 2004. All patients received 400 mg of 1% lidocaine injected into the brachial plexus sheath. Patients were randomly assigned into two groups. The patients in control group were given lidocaine and patients in study group received lidocaine containing 1 ml fentanyl (50 μg). Sensory and motor blockade were evaluated by using apinpriek, pinch and by measuring pushing and pulling force, respectively. Date were collected by a questionnaire and analyzed with SPSS software using, chi-square test and independent sample analysis.
Results: Differences in age and gender of patients in both group were not statistically significant. The duration of the sensory blockade increased in study group (176.20 ±13.63) compared with control group and these changes were statistically significant (121.17 ± 9.36, p<0.001). However, onset time of analgesia was prolonged by adding fentanyl to blachial plexus block (14.73 ± 2.50 in control group versus 21.24 ± 2.76 in study group, p<0.001).
Conclusion: Addition of fentanyl to lidocaine significantly increases the duration of brachial plexus blockade, but delays the onset of analgesia.
Niazi Ghazani M, Ansari M, Mortazavi M, Movasaghi Gargari R, Shahgholi S, Gorbanian N. Comparison of Axillary Block with Lidocaine and Lidocaine Plus Fentanyl on duration of Anesthesia in the upper Extremity Surgery . armaghanj 2006; 10 (4) :13-20 URL: http://armaghanj.yums.ac.ir/article-1-747-en.html