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

Ultrasound Image Quality of the Brachial Plexus at the Interscalene Space Before and After Shoulder Arthroscopy: a Prospective Cohort Study

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03657173

Enrollment

Registered

2018-09-04

Start date

2018-06-18

Completion date

2018-11-30

Last updated

2019-01-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pain, Postoperative

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.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

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

Design outcomes

Primary

Measure	Time frame	Description
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

Countries

United States

Outcome results