Menu
Recruiting NCT07739303

Anterior Suprascapular and Axillary vs. Interscalene Block for Analgesia and Diaphragmatic Function in Shoulder Surgery

No phase Interventional Peripheral Nerve Block Pain Management Diaphragm Protective Block Upper Extremity

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Interscalene Block, Combination of Axillary and Anterior Suprascapular Blocks.
Who it may be relevant to
Registry conditions: Peripheral Nerve Block, Pain Management, Diaphragm Protective Block, Upper Extremity. Basic parameters: 18 years — 65 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Turkey (Türkiye)
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

Unsure about the terms? Read our patient guide →

Official title

Comparison of Anterior Suprascapular and Axillary Nerve Block Versus Interscalene Block for Postoperative Analgesia and Diaphragmatic Function in Shoulder Surgery: A Randomized Controlled Trial

Overview

Shoulder surgeries are among the most frequently performed orthopedic interventions and are often associated with moderate to severe postoperative pain. In these procedures, effective pain management is crucial for early rehabilitation and patient comfort. Peripheral nerve blockade is widely used for postoperative analgesia in shoulder surgery. While the interscalene brachial plexus block is considered the gold standard for pain control, it is frequently associated with unintended phrenic nerve blockade, leading to hemidiaphragmatic paresis. To minimize respiratory complications while maintaining effective analgesia, alternative diaphragm-sparing regional anesthesia techniques, such as the combination of suprascapular and axillary nerve blocks, have been introduced. The aim of this study is to compare the analgesic efficacy and respiratory functions preservation of the ultrasound-guided anterior approach suprascapular combined with axillary nerve block versus interscalene block in patients undergoing shoulder surgery

Interventions

  • Procedure Interscalene Block
    Interscalene block will be performed on the patients using 10 mL of 0.5% bupivacaine under ultrasound guidance.
  • Procedure Combination of Axillary and Anterior Suprascapular Blocks
    Combined anterior suprascapular(5 ml) and axillary nerve blocks(5 ml) will be performed on the patients using a total of 10 mL of 0.5% bupivacaine under ultrasound guidance.

Primary outcome measures

  • Postoperative Pain Intensity at Rest [Time frame: 4 hours after surgery.]
Secondary outcome measures (8)
  • Postoperative Pain Intensity at Rest [Time frame: Up to 24 hours]
  • Postoperative Pain Intensity at Movement [Time frame: Up to 24 hours]
  • Total Postoperative Opioid Consumption [Time frame: Up to 24 hours]
  • Area Under Curve [Time frame: At the 24th hour]
  • Diaphragmatic Excursion [Time frame: Baseline (immediately before block performance) and 30 minutes after block performance]
  • Forced vital capacity (FVC) (volume) [Time frame: Perioperative period]
  • Forced expiratory flow in 1 s (FEV1) (volume) [Time frame: Perioperative period]
  • FEV1/FVC [Time frame: Perioperative period]

Eligibility criteria

Inclusion criteria

  • Patients aged between 18 and 65 years
  • American Society of Anesthesiologists (ASA) physical status I, II, or III
  • Patients scheduled to undergo elective arthroscopic shoulder surgery
  • BMI between 18 and 30 kg/m2
  • Ability to provide written informed consent

Exclusion criteria

  • Known allergy or hypersensitivity to local anesthetics
  • Presence of localized infection at the planned injection site
  • Severe coagulopathy or active use of anticoagulant medications
  • Contralateral phrenic nerve palsy or a diagnosis of severe chronic obstructive pulmonary disease (COPD)
  • History of chronic opioid consumption or neuropathic pain

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
Randomized
Model
Parallel assignment
Masking
Double blind
Primary purpose
Treatment

Study locations

Turkey (Türkiye) · 1 center
  • Ankara Etlik City Hospital — Yenimahalle

Identifiers

NCT: NCT07739303 · AEŞH-EK-2026-142

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗