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Interscalene Block Versus Serratus Posterior Superior Intercostal Plane Block for Arthroscopic Shoulder Surgery

NCT ID: NCT07311096

Last Updated: 2025-12-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-12-01

Study Completion Date

2025-12-15

Brief Summary

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This randomized controlled trial aims to compare the effectiveness of interscalene (ISB) and serratus posterior superior intercostal plane block (SPSIP) for postoperative analgesia in patients undergoing elective arthroscopic shoulder surgery. The primary outcome is total 24-hour opioid consumption. Secondary outcomes include pain scores, hemidiaphragmatic paresis incidence and severity, duration of analgesia, and changes in lung function. Participants are randomized into ISB or SPSIP groups; blocks are performed under ultrasound guidance. Postoperative pain is managed with patient controlled analgesia(PCA).

Detailed Description

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Conditions

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Shoulder Pain

Keywords

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Postoperative pain Analgesia Regional Anesthesia Interscalene brachial plexus block Serratus posterior superior plane block

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors
The anesthesiologist performing the blocks is aware of the group allocation; all other staff and outcome assessors are blinded.

Study Groups

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Interscalene Brachial Plexus Block (ISB)

Patients will receive ISB under ultrasound guidance prior to arthroscopic shoulder surgery using 15 ml 0.25% bupivacaine.

Group Type EXPERIMENTAL

Interscalene Brachial Plexus Block (ISB)

Intervention Type PROCEDURE

Patients receive ultrasound-guided ISB before arthroscopic shoulder surgery. 15 ml of 0.25% bupivacaine is injected using a 22 Gauge 50 mm needle with posterior in-plane approach, targeting C5-C6 roots.

Serratus Posterior Superior Intercostal Plane Block

Patients will receive SPSIP block under ultrasound guidance using 30 ml 0.25% bupivacaine

Group Type EXPERIMENTAL

Serratus Posterior Superior Intercostal Plane Block (SPSIP)

Intervention Type PROCEDURE

Patients receive ultrasound-guided SPSIP interfascial block in sitting position before surgery. Using a 22 Gauge 10 mm needle, 30 ml of 0.25% bupivacaine is injected between serratus posterior muscle and second rib.

Interventions

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Interscalene Brachial Plexus Block (ISB)

Patients receive ultrasound-guided ISB before arthroscopic shoulder surgery. 15 ml of 0.25% bupivacaine is injected using a 22 Gauge 50 mm needle with posterior in-plane approach, targeting C5-C6 roots.

Intervention Type PROCEDURE

Serratus Posterior Superior Intercostal Plane Block (SPSIP)

Patients receive ultrasound-guided SPSIP interfascial block in sitting position before surgery. Using a 22 Gauge 10 mm needle, 30 ml of 0.25% bupivacaine is injected between serratus posterior muscle and second rib.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Agreeing to participate in the study
* The American Society of Anesthesiologists I-III
* Scheduled for elective unilateral arthroscopic shoulder surgery

Exclusion Criteria

* Refusal to participate in the study
* Allergy to the medications to be used
* History of serious heart, kidney or liver disease
* Neurological deficits or neuropathy
* History of anticoagulant use
* Pre-existing operative respiratory dysfunction
* Having chronic shoulder pain
* Being about to undergo open surgery
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Erzurum Regional Training & Research Hospital

OTHER_GOV

Sponsor Role lead

Responsible Party

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Omer Doymus

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Ömer Doymus, MD

Role: PRINCIPAL_INVESTIGATOR

Erzurum Regional Training & Research Hospital

Locations

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Erzurum Regional Training Research Hospital

Erzurum, Yakutiye, Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

References

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Kumari P, Kumar A, Aliyar R, Sinha L. Continuous serratus posterior superior intercostal plane block for postoperative analgesia in thoracotomy. Anaesth Crit Care Pain Med. 2025 Sep;44(5):101570. doi: 10.1016/j.accpm.2025.101570. Epub 2025 Jun 14. No abstract available.

Reference Type BACKGROUND
PMID: 40523524 (View on PubMed)

Dogan G, Kucuk O, Kayir S, Dal GC, Ciftci B, Zengin M, Alagoz A. Serratus posterior superior intercostal plane block versus thoracic paravertebral block for pain management after video-assisted thoracoscopic surgery: a randomized prospective study. Braz J Anesthesiol. 2025 Sep-Oct;75(5):844647. doi: 10.1016/j.bjane.2025.844647. Epub 2025 Jun 3.

Reference Type BACKGROUND
PMID: 40473018 (View on PubMed)

Ozen V, Turan EI, Alver S, Ciftci B, Cakir I, Sahin AS. Serratus Posterior Superior Intercostal Plane Block for Postoperative Analgesia in a Pediatric Patient Undergoing Lobectomy: A Case Report. A A Pract. 2025 May 27;19(5):e01988. doi: 10.1213/XAA.0000000000001988. eCollection 2025 May 1.

Reference Type BACKGROUND
PMID: 40421887 (View on PubMed)

Other Identifiers

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SBUERZURUMSHOULDER

Identifier Type: -

Identifier Source: org_study_id