Document Detail


Comparative study of ropivacaine 0.5% and levobupivacaine 0.33% in axillary brachial plexus block.
MedLine Citation:
PMID:  19920417     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The aim of this prospective, randomized, double-blind study was to compare the block induced by ropivacaine 0.5% with levobupivacaine 0.33% at the recommended dose range in upper limb surgery. These concentrations have provided equivalent block after epidural analgesia. We hypothesized that the block induced by both local anesthetics at clinical equipotent dose would be similar in axillary block. METHODS: Eighty-six patients received 30 mL of ropivacaine 0.5% (150 mg) or 30 mL of levobupivacaine 0.33% (99 mg) by axillary approach. Sensory and motor blocks were assessed in the 5 main nerve territories of the arm at 2, 5, 10, 15, 20, 25, and 30 mins and every 6 hrs for the first 24 hrs. We used the Student t test and chi test for comparison between groups and an analysis of survival. P < 0.05 was considered statistically significant. RESULTS: Onset of motor block was 9.0 mins (SD, 5.3 mins) for ropivacaine and 12.4 mins (SD, 7.8 mins) for levobupivacaine (P = 0.02). Time to be considered ready for surgery was similar in both groups: ropivacaine, 25.2 mins (SD, 5.1 mins); and levobupivacaine, 25.3 mins (SD, 6.4 mins) (t = -0.09, P = 0.93). Sensory block was 9.2 hrs (SD, 3.1 hrs) for ropivacaine and 11.3 hrs (SD, 4.1 hrs) for levobupivacaine (P = 0.01). CONCLUSIONS: Onset of motor block was significantly faster for ropivacaine than levobupivacaine (P = 0.02), but the time to be ready for surgery was similar with both drugs. Duration of sensory block was prolonged with levobupivacaine (P = 0.01).
Authors:
Susana Gonz??lez-Su??rez; Mauricio Pacheco; Jaume Roig??; Margarita M Puig
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Regional anesthesia and pain medicine     Volume:  34     ISSN:  1532-8651     ISO Abbreviation:  Reg Anesth Pain Med     Publication Date:    2009 Sep-Oct
Date Detail:
Created Date:  2009-11-20     Completed Date:  2010-01-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9804508     Medline TA:  Reg Anesth Pain Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  414-9     Citation Subset:  IM    
Affiliation:
Department of Anaesthesiology, Hospital Universitario de la Vall d'Hebr??n, Universitat Aut??noma de Barcelona, Barcelona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Adult
Amides / administration & dosage*
Analgesics / therapeutic use
Anesthetics, Local / administration & dosage*
Brachial Plexus / drug effects*
Bupivacaine / administration & dosage,  analogs & derivatives
Double-Blind Method
Female
Humans
Injections
Male
Middle Aged
Motor Activity / drug effects
Nerve Block*
Pain Measurement
Pain, Postoperative / prevention & control
Prospective Studies
Sensory Thresholds / drug effects
Time Factors
Upper Extremity / surgery
Chemical
Reg. No./Substance:
0/Amides; 0/Analgesics; 0/Anesthetics, Local; 0/levobupivacaine; 2180-92-9/Bupivacaine; 84057-95-4/ropivacaine

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