Publication: Femoral nerve block using 0.25% or 0.5% bupivacaine for analgesia after arthroscopic anterior cruciate ligament reconstruction
Issued Date
2014-01-01
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01252208
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2-s2.0-84907359305
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of the Medical Association of Thailand. Vol.97, No.7 (2014), 717-723
Suggested Citation
Arissara Iamaroon, Suwimon Tangwiwat, Busara Sirivanasandha, Pathom Halilamien, Yada Lertpenmetha, Saroj Sirimaneewattana, Sudkanoung Surachetpong, Supranee Puangchan Femoral nerve block using 0.25% or 0.5% bupivacaine for analgesia after arthroscopic anterior cruciate ligament reconstruction. Journal of the Medical Association of Thailand. Vol.97, No.7 (2014), 717-723. Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/34566
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Title
Femoral nerve block using 0.25% or 0.5% bupivacaine for analgesia after arthroscopic anterior cruciate ligament reconstruction
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Abstract
Background: Femoral nerve block (FNB) with varying concentrations of bupivacaine is often used for postoperative analgesia after anterior cruciate ligament (ACL) reconstruction. Objective: To determine whether FNB using 0.25% or 0.5% bupivacaine provided better analgesia with less effect on quadriceps strengths after ACL reconstruction. Material and Method: One hundred patients were randomized to receive FNB with 20 mL of 0.25% or 0.5% bupivacaine. Data regarding demographic, effectiveness of FNB, time to first pain, time to first analgesic, pain scores, morphine use, and recovery of sensory and motor function were recorded. Results: Median time to first morphine requirement was 12 hours in 0.5% bupivacaine group and 10 hours in 0.25% bupivacaine group (p = 0.048). Pain score at 18 hours was lower in 0.5% bupivacaine group compared with 0.25% bupivacaine group (p = 0.001). When specify to the patellar tendon graft subgroup, the patients requiring morphine were 70% in 0.5% bupivacaine group and 90% in 0.25% bupivacaine group (p = 0.03). No differences were found in demographic data, effectiveness of FNB, time to first pain, morphine consumption, and recovery of sensorimotor function. Conclusion: FNB with 0.5% bupivacaine provided longer time to first analgesic and lower narcotic requirements after patellar tendon graft ACL reconstruction when compared to 0.25% bupivacaine. Both concentrations showed similar effect on quadriceps strengths.