Comparative Analgesia and Respiratory Effects of Shoulder Blocks

Recruiting now · Not applicable

Conditions studied: Postoperative Pain, Arthroscopic Shoulder Surgery

In brief

Interscalene block is widely accepted as the gold-standard regional analgesic technique for pain control after arthroscopic shoulder surgery. However, because this block is performed at the level of the brachial plexus roots, it may be associated with adverse effects such as phrenic nerve blockade and subsequent diaphragmatic dysfunction. These limitations have prompted the search for alternative regional anesthesia techniques that can provide effective postoperative analgesia while preserving respiratory function. The anterior suprascapular block, which covers a broad dermatomal distribution of the shoulder region, has been shown in some studies to provide sufficient analgesia as a standalone technique. In addition, the pericapsular nerve group (PENG) block of the shoulder-applied around the anterior capsule and performed at a distance from critical neurovascular structures that may lead to serious complications-may represent another potential analgesic option following arthroscopic shoulder procedures. Therefore, this study aims to evaluate alternative regional block techniques in comparison with the interscalene block and to contribute to the identification of an optimal analgesic strategy after arthroscopic shoulder surgery.

Key facts

Study ID

NCT07429669

Run by

Atatürk Chest Diseases and Chest Surgery Training and Research Hospital

People needed

120

Starts

2026-02-23

Expected to finish

2026-11-30

Last updated by the study team

2026-02-24

Who can join

Age: 18 and older, up to 65. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patients with ASA scores I-II-III
• Patients scheduled for elective arthroscopic shoulder surgery
• Patients who have been informed about the study and have given written consent will be included.

You may not qualify if…

• Those with a known allergy to local anesthetics
• Those with an infection at the application site
• Those with a severe coagulopathy disorder or anticoagulant use
• Those with contralateral phrenic nerve palsy or a serious pulmonary diagnosis
• Those with a history of chronic opioid use or neuropathic pain

Where it is running

• Ankara Etlik City Hospital — Yenimahalle, Ankara, Turkey (Türkiye) (enrolling)

Full record on ClinicalTrials.gov

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