Patient Positioning on Supraclavicular Nerve Block

NCT01615952 | Terminated

• 2 other identifiers: STU00058413Northwestern University
• Study Type: observational
• Target: 6
• Locations: 1 country
• Sites: 1

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

Keywords

Supraclavicular Block

Outcome Measures

Primary Outcomes (1)

• patient positioning

  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"

  Postoperative Day One

Study Arms (3)

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 Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• 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.

You may qualify if:

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

You may not qualify if:

• 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

Sponsors & Collaborators

• Northwestern University: lead

Study Sites (1)

Northwestern University Feingberg School of Medicine

Chicago, Illinois, 60611, United States

Location

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor of Anesthesiology

Study Record Dates

• First Submitted: June 7, 2012
• First Posted: June 11, 2012
• Study Start: January 1, 2012
• Primary Completion: November 1, 2014
• Study Completion: November 1, 2014
• Last Updated: March 30, 2015

Record last verified: 2015-03

Locations

US (1)