Effects of Interscalene Brachial Plexus Nerve Blocks on the Hand and Forearm

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Brian M. Ilfeld, MD, MS, University of California, San Diego
ClinicalTrials.gov Identifier:
NCT01229683
First received: October 27, 2010
Last updated: March 6, 2012
Last verified: March 2012
  Purpose

Research study to determine the proportion of cases in which an interscalene brachial plexus nerve block produces hand and forearm anesthesia.


Condition Intervention
Shoulder Surgery
Interscalene Nerve Block
Procedure: Interscalene Nerve Block

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Effects of Interscalene Brachial Plexus Nerve Blocks on the Hand and Forearm

Further study details as provided by University of California, San Diego:

Enrollment: 62
Study Start Date: October 2010
Study Completion Date: March 2012
Primary Completion Date: August 2011 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Shoulder Surgery
Patients will be given an interscalene nerve block and then strength and sensation of the hand and forearm will be tested to determine if the block is helping to anesthetize these areas.
Procedure: Interscalene Nerve Block
Patients undergoing shoulder surgery will be given an Interscalene Nerve Block. The patients' strength and sensation in their hand and forearm will be tested to determine if the nerve block is affectively delivering anesthetic to the nerves that serve these areas.

Detailed Description:

This is a research study to prospectively determine the proportion of cases in which an interscalene brachial plexus nerve block produces hand and forearm anesthesia. The investigators will investigate this issue in patients having shoulder and not hand/forearm surgery. We will test hand grip strength and sensation to determine if the hand and forearm are responding to the anesthesia.

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population

Study population will consist only of patients undergoing orthopedic shoulder surgery.

Criteria

Inclusion Criteria:

  • 18 years of age or older
  • unilateral orthopedic shoulder surgery
  • already desiring an interscalene brachial plexus nerve block for postoperative analgesia with the anesthetic plan including a preoperative interscalene nerve block with mepivacaine

Exclusion Criteria:

  • any known contraindication to study medications or testing hand grip strength pre/post-op
  • insulin-dependent diabetes mellitus
  • neuropathy of any etiology in the affected extremity
  • any anticipated incision site apart from the shoulder
  • Obesity
  • Pregnancy
  • Incarceration
  • inability to communicate with the investigators and hospital staff
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01229683

Locations
United States, California
UCSD Medical Centers (Hillcrest and Thornton)
San Diego, California, United States, 92103
Sponsors and Collaborators
University of California, San Diego
Investigators
Principal Investigator: Brian M Ilfeld, M.D., M.S. University of California, San Diego
  More Information

No publications provided

Responsible Party: Brian M. Ilfeld, MD, MS, Associate Professor, In Residence, University of California, San Diego
ClinicalTrials.gov Identifier: NCT01229683     History of Changes
Other Study ID Numbers: Madison Block
Study First Received: October 27, 2010
Last Updated: March 6, 2012
Health Authority: United States: Institutional Review Board

Keywords provided by University of California, San Diego:
UCSD
Perineural Nerve Block
Shoulder Surgery
Pain
Grip Strength
Sensation
Interscalene Nerve Block

ClinicalTrials.gov processed this record on April 17, 2014