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Sponsors and Collaborators: |
Hamilton Health Sciences McMaster University |
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Information provided by: | McMaster University |
ClinicalTrials.gov Identifier: | NCT00827658 |
Ulnar nerve blockade is necessary for sensory anesthesia and analgesia in the hand during minor procedures. The course of the ulnar nerve in the forearm, wrist, and hand is predictable and has low variability. However even with known anatomic location and landmarks, ulnar nerve blocks at the wrist frequently are inadequate for procedural anesthesia. The antebrachial fascia at the wrist acts as a barrier to local infiltration. Since the fascia can not be visualized or palpated, it is commonly is not penetrated, resulting in an inadequate block.
Furthermore at the level of the wrist the ulnar artery lies in close proximity to the nerve and there is potential for arterial puncture while attempting injection for volar wrist block. The palmar ulnar nerve block is an injection distal to the hook of the hamate in the thenar eminence which avoids the ulnar artery and antebrachial fascia. This block has been used successfully for many years in clinical practice but has not been assessed or compared in a research study. The purpose of this study is to assess the validity of using a palmar ulnar nerve block for procedures in the hand as compared to the standard volar wrist ulnar nerve block.
Condition | Intervention |
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Hand Surgery |
Procedure: Local Block |
Study Type: | Interventional |
Study Design: | Treatment, Randomized, Single Blind (Investigator), Single Group Assignment, Efficacy Study |
Official Title: | Ulnar Nerve Block for Procedural Anesthesia - Wrist Versus Palm |
Estimated Enrollment: | 246 |
Study Start Date: | February 2008 |
Estimated Study Completion Date: | December 2009 |
Estimated Primary Completion Date: | December 2009 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
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Hypothenar Palm block: Active Comparator
Hypothenar Palmar block group. Local is placed at this location in this study arm. The same local composition (Intervention) is used for both study arms. The trial is a comparison of location not the Intervention.
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Procedure: Local Block
total 3 cc injection (1.5 cc 1% plain lidocaine and 1.5 cc of 0.25% bupivicaine)
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Volar Wrist Block: Active Comparator
Volar Wrist block group. Local is placed at this location in this study arm. The same local composition (Intervention) is used for both study arms. The trial is a comparison of location not the Intervention.
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Procedure: Local Block
total 3 cc injection (1.5 cc 1% plain lidocaine and 1.5 cc of 0.25% bupivicaine)
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Ages Eligible for Study: | 18 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
Exclusion Criteria:
Contact: Stuart Martin | 905-572-6226 | smartin@mcmaster.ca |
Contact: Annika Card | 905-526-1948 | annika@quadrant.net |
Canada, Ontario | |
Hamilton General Hospital | Recruiting |
Hamilton, Ontario, Canada | |
Contact: Sonia Giangregorio-Campanella giangreg@hhsc.ca | |
Principal Investigator: Stuart Martin | |
Sub-Investigator: Annika Card |
Principal Investigator: | Stuart Martin | McMaster University |
Responsible Party: | Division of Plastic Surgery, Department of Surgery, McMaster University ( Dr. S. Martin ) |
Study ID Numbers: | McMaster 08-053 |
Study First Received: | January 21, 2009 |
Last Updated: | January 22, 2009 |
ClinicalTrials.gov Identifier: | NCT00827658 History of Changes |
Health Authority: | Canada: Ethics Review Committee |
anesthesia, local ulnar nerve hand surgery, plastic blinded randomized |
prospective local anesthesia volar wrist block hypothenar palm block ulnar nerve hand surgery |
Lidocaine Central Nervous System Depressants Anesthetics Bupivacaine |
Therapeutic Uses Physiological Effects of Drugs Central Nervous System Depressants |
Anesthetics Central Nervous System Agents Pharmacologic Actions |