Skip to content

Ultrasound Guided Interscalene, Suprascapular and Anterior Glenoid Nerve Blocks on Diaphragmatic Excursion and Analgesia Following Arthroscopic Shoulder Surgery

The Effect of Ultrasound Guided Interscalene, Suprascapular and Anterior Glenoid Nerve Blocks on Diaphragmatic Excursion and Analgesia Following Arthroscopic Shoulder Surgery: A Prospective Randomized Controlled Study

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07090733
Enrollment
80
Registered
2025-07-29
Start date
2025-01-01
Completion date
2025-12-31
Last updated
2025-07-29

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

Conditions

Analgesia, Anterior Glenoid Nerve Block, Arthroscopic Shoulder Surgery, Diaphragmatic Excursion, Interscalene Block, Suprascapular Nerve Block

Brief summary

This study aims to evaluate the diaphragmatic movement and postoperative analgesia following anterior glenoid, suprascapular, and interscalene nerve blocks in patients undergoing elective arthroscopic shoulder surgery.

Detailed description

Arthroscopic shoulder surgery is a key approach for diagnosing and treating many shoulder disorders. Nevertheless, 30-70% of patients often experience moderate to severe pain, especially at 48 h after the operation, which affects rapid recovery. The interscalene brachial plexus block (ISB) remains the gold standard for providing analgesia after shoulder surgery. Suprascapular nerve block (SSNB) is the most commonly used regional nerve block. Seventy percent of the sensory nerve fibers of the shoulder joint are innervated by the suprascapular nerve (SSN), with the supraspinatus and infraspinatus being directly innervated by the SSN.

Interventions

OTHERInterscalene brachial plexus block

Patients will receive general anesthesia, plus an ultrasound-guided interscalene brachial plexus block (ISB) with the injection of 15 mL of 0.25% bupivacaine.

OTHERSuprascapular nerve block

Patients will receive general anesthesia plus an ultrasound-guided suprascapular nerve block (SSNB) with injection of 15 ml of 0.25% bupivacaine.

OTHERAnterior glenoid block

Patients will receive general anesthesia plus an ultrasound-guided anterior glenoid block with injection of 15 ml of 0.25% bupivacaine.

OTHERSuprascapular nerve block + Anterior glenoid block

Patients will receive general anesthesia, along with a total volume of 30 mL of 0.25% bupivacaine, divided into 15 mL for ultrasound-guided SSNB and 15 mL for ultrasound-guided anterior glenoid block.

Sponsors

Tanta University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
21 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Age from 21 to 65 years. * Both sexes. * American Society of Anesthesiologists (ASA) physical status I or II. * Scheduled for arthroscopic shoulder surgery.

Exclusion criteria

* Patient's refusal to participate. * Patients with a history of allergy to local anesthetics. * Patients with a history of chronic use of painkillers. * Patients presented with mental dysfunction. * Patients with coagulation disorders. * Patients presented with skin or soft tissue infection at the proposed site of needle Insertion. * Pregnant Patients. * Patients with Chronic Obstructive Pulmonary Disease (COPD) or a Body Mass Index (BMI) of more than 40.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of hemi-diaphragmatic paralysis24 hours postoperativelyIncidence of hemi-diaphragmatic paralysis determined by ultrasound-guided assessment of diaphragmatic excursion. Diaphragmatic excursion will be measured before procedure (pre-block), 30 minutes after performing the block and post operative after complete recovery in post-anesthesia care unit (PACU).

Secondary

MeasureTime frameDescription
Degree of pain24 hours postoperativelyEach patient will be instructed about postoperative pain assessment with the numerical rating scale (NRS) score. NRS (0 represents no pain while 10 represents the worst pain imaginable). NRS will be recorded at T0, 30 min, 2, 4, 6, 12, 18, and 24 hours postoperatively.
Total analgesic consumption24 hours postoperativelyAll patients will receive Paracetamol 1 g/6 hours as a regular analgesia and Morphine 3mg if the numerical rating scale (NRS) \> 3 as a rescue analgesia.
Degree of patient satisfaction24 hours postoperativelyThe degree of patient satisfaction will be assessed based on a questionnaire and graded on a 4-point scale (excellent/good/fair/poor)

Countries

Egypt

Contacts

Primary ContactFatma E Elsamahy, Master
Drfatmaelsamahy@gmail.com00201094082899

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026