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document
Femoral nerve block using 0.25 % or 0.5 % bupivacaine for analgesia after arthroscopic anterior cruciate ligament reconstruction . 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 .
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Intervention_Pharmacological
Femoral nerve block using 0.25 % or 0.5 % bupivacaine
68080
Intervention_Physical
Femoral nerve block ( FNB )
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Intervention_Pharmacological
bupivacaine
68082
Intervention_Pharmacological
FNB using 0.25 % or 0.5 % bupivacaine
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Intervention_Physical
FNB
68084
Intervention_Pharmacological
20 mL of 0.25 % or 0.5 % bupivacaine .
68085
Intervention_Pharmacological
FNB
68086
Intervention_Pharmacological
bupivacaine
68087
Intervention_Pharmacological
bupivacaine
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Intervention_Pharmacological
0.5 % bupivacaine
68089
Intervention_Pharmacological
0.25 % bupivacaine
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Intervention_Pharmacological
morphine
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Intervention_Pharmacological
0.5 % bupivacaine
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Intervention_Pharmacological
0.25 % bupivacaine
68093
Intervention_Pharmacological
FNB
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Intervention_Pharmacological
FNB with 0.5 % bupivacaine
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Intervention_Pharmacological
0.25 % bupivacaine .
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Participant_Condition
arthroscopic anterior cruciate ligament reconstruction
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Participant_Condition
anterior cruciate ligament ( ACL ) reconstruction
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Participant_Sample-size
One hundred