Ultrasound Image Quality of the Brachial Plexus at the Interscalene Space Before and After Shoulder Arthroscopy

Completed

• Conditions: Pain, Postoperative

• Registration Number: NCT03657173
• Lead Sponsor: Mayo Clinic

Brief Summary

Ultrasound guided interscalene nerve blockade with local anesthesia is a standard regional anesthetic technique for providing postoperative analgesia during shoulder arthroscopy and wide variety of shoulder procedures. There is a paucity of data regarding the effects of shoulder arthroscopy on ultrasound image quality, including the effects of muscle mobilization and the use of large volume irrigation and subsequent tissue absorption, though increased neck circumference and airway edema are known complications of arthroscopic shoulder procedures.

The objective of the study is to determine if there is a difference in ultrasound image quality of the interscalene block anatomy, by Likert scale, pre- versus post-operatively in a cohort of patients undergoing shoulder arthroscopy who routinely receive blockade of the brachial plexus for postoperative analgesia. Further, if there are differences in imaging quality, correlations with surgical and patient factors will be studied.

Detailed Description

Not available

Study Timeline

• Study Start: 2018-06-18
• Study First Submitted: 2018-08-27
• Study First Submitted QC: 2018-08-27
• Study First Posted: 2018-09-04
• Primary Completion: 2018-11-30
• Study Completion: 2018-11-30
• Status Verified: 2019-01
• Last Update Submitted: 2019-01-28
• Last Update Posted: 2019-01-30

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• Subject is undergoing shoulder procedures involving arthroscopy
• Subject has consented to interscalene blockade for postoperative analgesia

Exclusion Criteria

• Patient refusal
• Contraindications to interscalene blockade, including significant pulmonary insufficiency, hemi-diaphragmatic paralysis, brachial plexus or degenerative neuropathy
• Allergy to proposed local anesthetic medication\
• Severe cervical spine disease.
• BMI >40 kg/m2
• Neck Circumference > 50cm
• Failed preoperative interscalene blockade
• Patients known to be currently pregnant or actively breastfeeding
• Patients where English is a language barrier

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Change in Likert Scale	2-3 months	Ultrasound media will be scored using a Likert scale (from 1-5 based on quality of imaging) individually for pre-operative and post-operative scanning for each enrolled patient

Trial Locations

Locations (1)

Mayo Clinic; 🇺🇸 Rochester, Minnesota, United States