NCT05653570

Brief Summary

The erector spinae plane (ESP) block has been studied for analgesia in shoulder surgery as a phrenic nerve-sparing alternative. However, successful ESP catheter placement appears multifactorial, with failure mechanisms including lamination, plane collapse, or catheter overcoiling. Electrical stimulation (ES) is a common technique used in regional anesthesia to detect possible intraneural placement. ES of the erector spinae muscle complex may objectively guide proper interfascial catheter placement and improve local anesthetic spread. The primary goal of this study is to establish if ESP catheter placement with the addition of ES to ultrasound (US) guidance facilitates accurate catheter placement. This study will further characterize postoperative analgesia and the incidence of brachial plexus stimulation for patients who receive ES-assisted ESP catheter placement.

Trial Health

65
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Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
6mo left

Started Nov 2025

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress51%
Nov 2025Nov 2026

First Submitted

Initial submission to the registry

December 8, 2022

Completed
8 days until next milestone

First Posted

Study publicly available on registry

December 16, 2022

Completed
2.9 years until next milestone

Study Start

First participant enrolled

November 1, 2025

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2026

Last Updated

April 21, 2025

Status Verified

November 1, 2024

Enrollment Period

1 year

First QC Date

December 8, 2022

Last Update Submit

April 17, 2025

Conditions

Keywords

erector spinae planeelectrical stimulation

Outcome Measures

Primary Outcomes (1)

  • Number of patients with erector spinae muscle stimulation via stimulating catheter

    Successful erector spinae plane needle and catheter insertion means that the needle/catheter is deep to the myofascia of the erector spinae muscle complex and superficial to the intertransverse ligaments / transverse process. Thus, any stimulation of the catheter after its placement in the erector spinae muscle complex seen under ultrasound or perceived by the patient will be documented as catheter placement failure. No visualized or perceived stimulation of the erector spinae muscle complex will be documented as catheter placement success.

    Immediately after catheter placement (up to 5 minutes to assess)

Secondary Outcomes (12)

  • Time to perform erector spinae plane catheter

    During catheter placement (up to 20 minutes)

  • Worst pain score ratings in the postanesthesia care unit (PACU)

    as soon as patient can respond in PACU (up to 1 hour)

  • Highest and lowest vertebral level of sensory change after local anesthetic bolus

    preoperatively, 30 minutes after local anesthetic bolus

  • Incidence of brachial plexus or intercostal stimulation via stimulating catheter before local anesthetic bolus

    preoperatively, prior to local anesthetic bolus (up to 5 minutes)

  • Incidence of brachial plexus or intercostal stimulation via stimulating catheter after local anesthetic bolus

    preoperatively, 30 minutes after local anesthetic bolus

  • +7 more secondary outcomes

Study Arms (2)

Ultrasound Guidance Only

ACTIVE COMPARATOR
Diagnostic Test: Ultrasound

Electrical stimulation and Ultrasound Guidance

EXPERIMENTAL
Diagnostic Test: Electrical stimulationDiagnostic Test: Ultrasound

Interventions

Electrical stimulationDIAGNOSTIC_TEST

Electrical stimulation will be used to confirm needle and catheter placement within the interfascial plane between the erector spinae muscle and thoracic transverse process.

Electrical stimulation and Ultrasound Guidance
UltrasoundDIAGNOSTIC_TEST

Ultrasound guidance will be used to visualize needle and catheter placement within the interfascial plane between the erector spinae muscle and thoracic transverse process.

Electrical stimulation and Ultrasound GuidanceUltrasound Guidance Only

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • elective total or total reverse shoulder arthroplasty

You may not qualify if:

  • inability to provide consent
  • history of active opioid use
  • emergency procedures
  • shoulder arthroscopy
  • partial shoulder replacement
  • shoulder resurfacing
  • any revision shoulder surgery
  • any indwelling deep brain stimulator, pacemaker, and/or other neurostimulators

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Pain, PostoperativeShoulder Pain

Interventions

Ultrasonography

Condition Hierarchy (Ancestors)

Postoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPainNeurologic ManifestationsSigns and SymptomsArthralgiaJoint DiseasesMusculoskeletal Diseases

Intervention Hierarchy (Ancestors)

Diagnostic ImagingDiagnostic Techniques and ProceduresDiagnosis

Study Officials

  • Jan Boublik, MD

    Stanford University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
DIAGNOSTIC
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Clinical Assistant Professor

Study Record Dates

First Submitted

December 8, 2022

First Posted

December 16, 2022

Study Start

November 1, 2025

Primary Completion (Estimated)

November 1, 2026

Study Completion (Estimated)

November 1, 2026

Last Updated

April 21, 2025

Record last verified: 2024-11

Data Sharing

IPD Sharing
Will not share