Patient Positioning on Supraclavicular Nerve Block

NCT ID: NCT01615952

Last Updated: 2015-03-30

Basic Information

• Recruitment Status: TERMINATED
• Total Enrollment: 6 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2012-01-31
• Study Completion Date: 2014-11-30

Brief Summary

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.

Conditions

Nerve Block

Study Design

• Observational Model Type: COHORT
• Study Time Perspective: PROSPECTIVE

Study Groups

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"

No interventions assigned to this group

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"

No interventions assigned to this group

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"

No interventions assigned to this group

Eligibility 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

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 65 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Northwestern University

OTHER

Sponsor Role: lead

Responsible Party

Antoun Nader

Professor of Anesthesiology

Responsibility Role: PRINCIPAL_INVESTIGATOR

Locations

Northwestern University Feingberg School of Medicine

Chicago, Illinois, United States

Countries

United States

Other Identifiers

Northwestern University

Identifier Type: -

Identifier Source: secondary_id

STU00058413

Identifier Type: -

Identifier Source: org_study_id