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NCT Number: NCT07090733

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

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.

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Key information

Conditions

Interscalene Block Agnosia Analgesia Anterior Glenoid Nerve Block Arthroscopic Shoulder Surgery Diaphragmatic Excursion Nervous System Diseases Neurobehavioral Manifestations Neurologic Manifestations Pathological Conditions, Signs and Symptoms Perceptual Disorders Signs and Symptoms Suprascapular Nerve Block

Age range

21 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Tanta University

Tanta, El-Gharbia, 31527, Egypt

Location status: Recruiting

Location contact

Ashraf E Elzwftawy, MD

SUB_INVESTIGATOR

Fatma E Elsamahy, Master

CONTACT

[email protected]

00201094082899

Naglaa K Mohamed, MD

SUB_INVESTIGATOR

Osama M Shalaby, MD

SUB_INVESTIGATOR

Sameh M Reffaat, MD

SUB_INVESTIGATOR

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Interscalene brachial plexus block

Other

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

Other names: 15 ml of 0.25% bupivacaine

Suprascapular nerve block

Other

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

Other names: 15 ml of 0.25% bupivacaine

Anterior glenoid block

Other

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

Other names: 15 ml of 0.25% bupivacaine

Suprascapular nerve block + Anterior glenoid block

Other

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.

Other names: 30 mL of 0.25% bupivacaine

Primary outcomes

  1. Incidence of hemi-diaphragmatic paralysis

    Time frame: 24 hours postoperatively

    Incidence 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 outcomes

  1. Degree of pain

    Time frame: 24 hours postoperatively

    Each 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.

  2. Total analgesic consumption

    Time frame: 24 hours postoperatively

    All 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.

  3. Degree of patient satisfaction

    Time frame: 24 hours postoperatively

    The degree of patient satisfaction will be assessed based on a questionnaire and graded on a 4-point scale (excellent/good/fair/poor)

Study contacts

Contact information is provided by the study sponsor or research team.

Fatma E Elsamahy, Master

CONTACT

[email protected]

00201094082899

Sponsors and collaborators

Lead sponsor

Tanta University

Other

Registry information

Official study title

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

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Jul 29, 2025
Registry last updated
Jul 29, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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