An interventional study of Interscalene block and Anterior suprascapular block in Postoperative Pain and Arthroscopic Shoulder Surgery, sponsored by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital. Recruiting at 1 site in Turkey (Türkiye). Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-02-24.
Sponsored by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital · Not applicable, Interventional, and Treatment
Among 16 studies in Pain, Postoperative by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital — 6 open to participants now, 6 under way, none of them phase 3. Pain, Postoperative · Atatürk Chest Diseases and Chest Surgery Training and Research Hospital.
Among the 16 studies in Pain, Postoperative by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital, this one has the largest planned enrollment of the 12 interventional ones, is one of 3 that started in 2026, is one of 12 with no phase, and was the 14th registered.
5,640 studies on the registry are indexed under Pain, Postoperative; 1,230 are open to participants now.
This study's planned enrollment of 120 is above the median of 75 across 4,821 interventional studies indexed under Pain, Postoperative.
Browse Pain, Postoperative studies →6 of the 16 studies in Pain, Postoperative by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital are open now, in 1 country. Each count lists the studies.
Of the 679 Pain, Postoperative studies recruiting now, 241 (35%) set no upper age limit and 328 (48%) stop at 75 or younger; 74 take children under 18; 128 take healthy volunteers.
This study: 18 Years to 65 Years · all sexes · no healthy volunteers.
The full table on the hub →16 studies; the count open now beside each. This study's row is marked.
First in 2021; this study’s year is marked. 3 started in 2026.
Median enrollment 60 across the 12 interventional studies, 100 across the 4 observational. Of the 8 that completed or were terminated, 0 (0%) have results posted.
Atatürk Chest Diseases and Chest Surgery Training and Research Hospital is the lead sponsor of 29 studies on the registry; 9 are open to participants now.
3 of the studies in Pain, Postoperative by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07429669Atatürk Chest Diseases and Chest Surgery Training and Research HospitalComparative Analgesia and Respiratory Effects of Shoulder Blocks | 2026-11-10 |
| NCT07747623Atatürk Chest Diseases and Chest Surgery Training and Research HospitalOne-level and Bi-level ESPB Application in Patients Undergoing Breast Surgery | 2027-01-10 |
| NCT07826741Atatürk Chest Diseases and Chest Surgery Training and Research HospitalIntrathecal Morphine and Transversalis Fascia Plane Block for Analgesia After Open Inguinal Hernia Repair | 2027-04-10 |
Among the 16 studies in Pain, Postoperative by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital, from their registry updates:
Nothing recorded among them since 2026-09-25.
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.
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Exclusion Criteria:
In the preoperative period, 10 mL of 0.25% bupivacaine will be injected between C5 and C6 using an in-plane technique guided by a linear ultrasound (US) probe.
Procedure: Interscalene block
A linear ultrasound probe will be positioned in the supraclavicular fossa, parallel to the clavicle. The suprascapular nerve will be identified as a hyperechoic oval structure deep to the omohyoid muscle and posterior-lateral to the brachial plexus. 10 mL of local anesthetic will be injected under the omohyoid muscle, around the suprascapular nerve.
Procedure: Anterior suprascapular block
A linear ultrasound probe will be placed sagittally, near the axillary region, just below the coracoid process. The subscapularis muscle and its tendon will be visualized. The target area is the space between the deep fascia of the subscapularis muscle and the anterior surface of the shoulder joint capsule. The needle will pass the subscapularis muscle and be guided into the plane between the capsule and the muscle, where 20 mL of local anesthetic will be dispensed to block the articular branches innervating the capsule.
Procedure: Pericapsular nerve group (PENG) block
Interscalene block will be performed, under US guidance, before the surgical operation, and when the patient is placed in the supine position.
Anterior suprascapular block will be performed, under US guidance, before the surgical operation, and when the patient is placed in the supine position.
Pericapsular nerve group (PENG) block will be performed, under US guidance, before the surgical operation, and when the patient is placed in the supine position.
Pain scores
Pain will be assessed at rest and while coughing using the visual analog scale on a scale from 0 (no pain) to 100 (worst pain) at the first postoperative hour.
Time frame: First hour after the surgery
Pain scores
Pain will be assessed at rest and while coughing using the visual analog scale on a scale from 0 (no pain) to 100 (worst pain). Pain assessment will be done at the 1st, 2nd, 6th, 12th, and 24th hours after surgery.
Time frame: First 24 hours after surgery
Forced vital capacity (FVC) (volume)
Forced vital capacity (FVC) (volume) will be evaluated during the perioperative period. Measurements will be performed before block administration (baseline), at 30 minutes after the block, and at postoperative 1, 12, and 24 hours.
Time frame: Perioperative period
Forced expiratory flow in 1 s (FEV1) (volume)
Forced expiratory flow in 1 s (FEV1) (volume) will be evaluated during the perioperative period. Measurements will be performed before block administration (baseline), at 30 minutes after the block, and at postoperative 1, 12, and 24 hours.
Time frame: Perioperative period
FEV1/FVC
FEV1/FVC will be evaluated during the perioperative period. Measurements will be performed before block administration (baseline), at 30 minutes after the block, and at postoperative 1, 12, and 24 hours.
Time frame: Perioperative period
Started Feb 2026 (actual). Primary completion is estimated for Nov 2026, 8 months after the start.
Of 2,089 non-industry interventional studies with no phase under Pain, Postoperative, half reached primary completion within 11 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 23. This study's planned 8 months is below that.
Counting every sponsor, half of 2,102 studies reached it within 11 months; a quarter within 6 and three quarters within 23.
How these figures are worked out, and which studies are left out of them.
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Atatürk Chest Diseases and Chest Surgery Training and Research Hospital