Korean J Anesthesiol.
2012 Jul;63(1):36-42. 10.4097/kjae.2012.63.1.36.
Effects of increasing the dose of ropivacaine on vertical infraclavicular block using neurostimulation
- Affiliations
-
- 1Department of Anesthesiology and Pain Medicine, Jeju Halla General Hospital, Jeju, Korea.
- 2Department of Anesthesiology and Pain Medicine, Konyang University Hospital, Daejeon, Korea. kangpo1026@hanmail.net
- 3Department of Anesthesiology and Pain Medicine, Chungju Hospital, Konkuk University School of Medicine, Chungju, Korea.
- 4Department of Anesthesiology and Pain Medicine, College of Medicine, Inha University, Incheon, Korea.
- 5Department of Preventive Medicine, School of Medicne, Chungnam National University, Daejeon, Korea.
- KMID: 2092337
- DOI: http://doi.org/10.4097/kjae.2012.63.1.36
Abstract
- BACKGROUND
Use of an infraclavicular block is appropriate for surgery of the upper limb. However, it does not consistently block the entire brachial plexus. The aim of this study was to investigate whether increasing the dose of ropivacaine could enhance the success rate, onset time, and efficacy of the sensory and motor block during the use of a vertical infraclavicular block using neurostimulation in upper limb surgery.
METHODS
Two hundreds and ten patients were prospectively randomized into three groups: Group 1 (30 ml of 0.5% ropivacaine; n = 70), Group 2 (40 ml of 0.5% ropivacaine; n = 70), and Group 3 (40 ml of 0.75% ropivacaine; n = 70). Patients in each group received a vertical infraclavicular block using neurostimulation and obtained a distal motor response of the ulnar or median nerve. Recorded outcome measures included block success rate, onset time, sensory and motor blocks, and adverse events.
RESULTS
No differences were found in the block success rate among the three groups (92.8%, 97.1%, and 94.2% for Groups 1, 2, and, 3, respectively; P = 0.346). There were no significant differences in onset time (P = 0.225) among groups, nor was there enhancement in the sensory block, but the motor block was enhanced. Local anesthetic toxicity was observed in five female patients from group 3 (P = 0.006).
CONCLUSIONS
Although the efficacy of the motor block was significantly improved, success rate, onset time, and efficacy of sensory block were not enhanced significantly among groups despite differences in volume and volume/concentration of the local anesthetic.
Keyword
- Full Text Links
-
- Actions
-
Cited
- CITED
-
- Close
- Share
-
- Similar articles
-
- A clinical comparison of vertical infraclavicular brachial plexus block using 0.75% or 0.5% ropivacaine for upper limb surgery
- Comparison of vertical infraclavicular brachial plexus block with 0.5% levobupivacaine and 0.5% ropivacaine for upper limb surgery
- A comparison of infraclavicular and supraclavicular approaches to the brachial plexus using neurostimulation
- Phrenic nerve palsy following coracoid infraclavicular brachial plexus block
- Subcoracoid tunnel block as an alternative infraclavicular brachial plexus approach -a case series-
