Patient Positioning on Supraclavicular Nerve Block

This study is currently recruiting participants. (see Contacts and Locations)
Verified March 2014 by Northwestern University
Sponsor:
Information provided by (Responsible Party):
Antoun Nader, Northwestern University
ClinicalTrials.gov Identifier:
NCT01615952
First received: June 7, 2012
Last updated: March 18, 2014
Last verified: March 2014
  Purpose

Blockade of the brachial plexus using a supraclavicular approach provides excellent anesthesia for upper extremity surgery. The most serious complication specific to this block is pneumothorax. Subsequent modifications of this block including the use of ultrasound have lowered the risk from 6% to <1%. Case reports remain and authors have described certain factors and strategies to reduce this risk. Most texts and journals describe the patient in a supine or semi-sitting position during the block. At the investigators institution the investigators perform the block in a semi-sitting position to facilitate needle tip visibility with ultrasound. The investigators plan to obtain ultrasound anatomic measurements in three different positions (supine, semi-sitting, sitting) using patients consented for supraclavicular nerve blocks.


Condition
Nerve Block

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective

Further study details as provided by Northwestern University:

Primary Outcome Measures:
  • patient positioning [ Time Frame: Postoperative Day One ] [ Designated as safety issue: No ]
    Ultrasound measurements will be made at three different positions: Sitting, semi-sitting, and supine. The ultrasound measurements include A= skin to the pleura at the level lateral to the subclavian artery, B= skin to center of the subclavian artery, C= skin to first rib, D= skin to "corner pocket"


Estimated Enrollment: 63
Study Start Date: January 2012
Estimated Primary Completion Date: August 2014 (Final data collection date for primary outcome measure)
Groups/Cohorts
Sitting Position (head of bed 90 degrees)
Ultrasound measurements will be performed. A= skin to the pleura at the level lateral to the subclavian artery, B= skin to center of the subclavian artery, C= skin to first rib, D= skin to "corner pocket"
Semi-sitting position (45 degrees)
Ultrasound measurements will be performed. A= skin to the pleura at the level lateral to the subclavian artery, B= skin to center of the subclavian artery, C= skin to first rib, D= skin to "corner pocket"
Supine position
Ultrasound measurements will be performed. A= skin to the pleura at the level lateral to the subclavian artery, B= skin to center of the subclavian artery, C= skin to first rib, D= skin to "corner pocket"

  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

Patients 18 y/o to 65 y/o, who are scheduled to receive a ultrasound-guided supraclavicular nerve block as part of their postoperative pain management.

Criteria

Inclusion Criteria:

  • all patients, 18 y/o to 65 y/o, who are scheduled to receive an ultrasound- guided supraclavicular nerve block

Exclusion Criteria:

  • patient refusal to be included in the study,
  • the presence of language barrier that inhibits proper communication with the patient, contraindications to regional anesthesia (local infection, severe pulmonary disease, or preexisting neuropathy)
  • history of allergy to amide local anesthetics or narcotics
  • the presence of a progressive neurological deficit
  • history of hepatorenal insufficiency
  • the presence of a coagulopathy or infection
  • pregnancy
  • a history of psychiatric disorder
  • inability to follow study protocol
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01615952

Contacts
Contact: Antoun Nader, MD 312/926-2280 a-nader2@northwestern.edu

Locations
United States, Illinois
Northwestern University Feingberg School of Medicine Recruiting
Chicago, Illinois, United States, 60611
Contact: Antoun Nader, MD    312-926-2280    a-nader2@northwestern.edu   
Sponsors and Collaborators
Northwestern University
  More Information

No publications provided

Responsible Party: Antoun Nader, Professor of Anesthesiology, Northwestern University
ClinicalTrials.gov Identifier: NCT01615952     History of Changes
Other Study ID Numbers: STU00058413, Northwestern University
Study First Received: June 7, 2012
Last Updated: March 18, 2014
Health Authority: United States: Institutional Review Board

Keywords provided by Northwestern University:
Supraclavicular Block

ClinicalTrials.gov processed this record on July 22, 2014