{"id":"interscalene-nerve-block","safety":{"commonSideEffects":[{"rate":"40-90","effect":"Horner's syndrome (ptosis, miosis, anhidrosis)"},{"rate":"5-20","effect":"Hoarseness or voice changes"},{"rate":"0.1-1","effect":"Dyspnea or respiratory compromise"},{"rate":"20-60","effect":"Phrenic nerve palsy"},{"rate":"<1","effect":"Local anesthetic toxicity"},{"rate":"<1","effect":"Nerve injury"}]},"_chembl":null,"_dailymed":null,"mechanism":{"_ai_source":"claude-haiku-4.5","explanation":"The procedure targets the brachial plexus nerves at the interscalene groove (between the anterior and middle scalene muscles in the neck) to deliver local anesthetic directly to nerve tissue. This blocks sensory and motor signals from the shoulder, upper arm, and hand, providing anesthesia for surgical procedures and postoperative pain management. The technique is performed under ultrasound or landmark guidance and may be single-shot or continuous (catheter-based).","oneSentence":"An interscalene nerve block is a regional anesthesia technique that injects local anesthetic around the upper trunk of the brachial plexus to numb the shoulder and upper arm.","_ai_confidence":"high"},"_scrapedAt":"2026-03-27T23:33:25.665Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Anesthesia for shoulder surgery (rotator cuff repair, shoulder arthroplasty)"},{"name":"Anesthesia for upper arm and hand surgery"},{"name":"Postoperative pain management following shoulder procedures"}]},"trialDetails":[{"nctId":"NCT07486349","phase":"NA","title":"Shoulder Pericapsular Block Versus Interscalene Block in Arthroscopic Shoulder Surgery","status":"NOT_YET_RECRUITING","sponsor":"Marmara University","startDate":"2026-04-01","conditions":"Hemidiaphragmatic Paralysis","enrollment":70},{"nctId":"NCT07483814","phase":"","title":"Comparison of Postoperative Analgesic Efficacy of Interscalene and Suprascapular Blocks Used in Arthroscopic Shoulder Surgery","status":"ACTIVE_NOT_RECRUITING","sponsor":"Aydin Adnan Menderes University","startDate":"2024-01-01","conditions":"Postoperative Acute Pain, Chronic Pain","enrollment":84},{"nctId":"NCT07474896","phase":"NA","title":"Diaphragm-Sparing Regional Anesthesia Techniques for Shoulder Surgery","status":"NOT_YET_RECRUITING","sponsor":"Poznan University of Medical Sciences","startDate":"2026-04-01","conditions":"Osteoarthritis Shoulder","enrollment":70},{"nctId":"NCT07445126","phase":"NA","title":"Comparison of the Effectiveness of USG-Guided Interscalene Block Versus Combined Interscalen-Suprascapular Block for Arthroscopic Shoulder Surgery","status":"NOT_YET_RECRUITING","sponsor":"Asuman Ocaklar","startDate":"2026-03-01","conditions":"Shoulder Pain, Artroscopic Surgery, Postoperative 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Versus Combined With Superior Truncus Block During Shoulder Surgery in Diaphragmatic Function","status":"NOT_YET_RECRUITING","sponsor":"Sohag University","startDate":"2026-04-01","conditions":"Diaphragm Issues","enrollment":60},{"nctId":"NCT07382063","phase":"NA","title":"Effects of Extra-fascial Interscalene Brachial Plexus Block on Diaphragmatic Function in School-Aged Children","status":"ENROLLING_BY_INVITATION","sponsor":"Shanghai Jiao Tong University Affiliated Sixth People's Hospital","startDate":"2026-02-01","conditions":"Diaphragm Movement","enrollment":72},{"nctId":"NCT07216820","phase":"NA","title":"Interscalene vs Phrenic-sparing Blocks in Obesity and Effect of Maximum Inspiratory Pressure","status":"RECRUITING","sponsor":"University of North Carolina, Chapel Hill","startDate":"2026-01-21","conditions":"Shoulder Surgery, Obesity","enrollment":68},{"nctId":"NCT07369271","phase":"NA","title":"Continuous Cervical Erector Spinae Plane Block Versus Interscalene Nerve Block in 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Hospital","startDate":"2024-10-08","conditions":"Shoulder Arthroscopy, Peripheral Nerve Block, Pain Management","enrollment":90},{"nctId":"NCT07353047","phase":"NA","title":"The Efficacy of Personalized Local Anesthetic Dosing Based on Ultrasound-Measured Nerve Cross-Sectional Area in Brachial Plexus Block: a Non-Inferiority Randomized Controlled Trial.","status":"NOT_YET_RECRUITING","sponsor":"Northern Jiangsu People's Hospital","startDate":"2026-02-01","conditions":"Upper Limb Surgery","enrollment":300},{"nctId":"NCT07343414","phase":"","title":"Effect of Anesthesia Technique on Surgical View in Shoulder Arthroscopy","status":"NOT_YET_RECRUITING","sponsor":"Amasya University","startDate":"2026-02-01","conditions":"Shoulder Arthroscopy, Interscalene Nerve Block, Surgical View Quality","enrollment":82},{"nctId":"NCT07326943","phase":"NA","title":"Minimum Effective Dose of Ropivacaine 0.5% for Ultrasound-guided Interscalene Block Targeting the C7 Nerve Root in Hand and Forearm Surgery","status":"NOT_YET_RECRUITING","sponsor":"Huazhong University of Science and Technology","startDate":"2026-01-01","conditions":"Intermuscular Groove Brachial Plexus Block","enrollment":56},{"nctId":"NCT07324499","phase":"NA","title":"Effect of Dexamethasone on Plasma Levels of Bupivacaine and Dexamethasone After a Single-injection Interscalene Nerve Block.","status":"NOT_YET_RECRUITING","sponsor":"Pontificia Universidad Catolica de Chile","startDate":"2026-03-01","conditions":"Pain, Interscalene Blocks, Dexamethasone","enrollment":40},{"nctId":"NCT05602636","phase":"PHASE4","title":"Analgesic Effect of Supraclavicular Block and Interscalene Analgesia Versus an Intercostobrachial Nerve Block Versus PCA in Forearm Surgery","status":"RECRUITING","sponsor":"Al-Azhar University","startDate":"2022-12-10","conditions":"Forearm Surgery, US-Guided Supraclavicular Block, Interscalene Analgesia","enrollment":60},{"nctId":"NCT07253740","phase":"NA","title":"Interscalene Versus Infraspinatus-Teres Minor Blocks for Arthroscopic Shoulder Surgery","status":"RECRUITING","sponsor":"Ataturk University","startDate":"2026-01-01","conditions":"Arthroscopic Shoulder Surgery","enrollment":60},{"nctId":"NCT07311096","phase":"NA","title":"Interscalene Block Versus Serratus Posterior Superior Intercostal Plane Block for Arthroscopic Shoulder Surgery","status":"COMPLETED","sponsor":"Erzurum Regional Training & Research Hospital","startDate":"2024-12-01","conditions":"Shoulder Pain","enrollment":60},{"nctId":"NCT05444517","phase":"NA","title":"Interscalene Block Versus Combined Infraclavicular-Anterior Suprascapular Blocks for Shoulder Surgery","status":"COMPLETED","sponsor":"University of Chile","startDate":"2023-06-13","conditions":"Pain, Postoperative, Shoulder Pain, Surgical Procedure, Unspecified","enrollment":50},{"nctId":"NCT06703281","phase":"NA","title":"Comparison of the Effects of Interscalene Block and Superior Trunk Block on Pulmonary Functions","status":"COMPLETED","sponsor":"Gazi University","startDate":"2024-12-01","conditions":"Regional Anesthesia Morbidity, Complication Following Peripheral Nerve Block, Phrenic Nerve Paralysis","enrollment":123},{"nctId":"NCT07256938","phase":"PHASE4","title":"Effect of Clonidine Additive to suprascapular_ Costoclavicular Versus Standard Interscalene Block in Arthroscopic Shoulder Surgeries","status":"NOT_YET_RECRUITING","sponsor":"Assiut University","startDate":"2025-12","conditions":"Arthroscopic Shoulder Surgeries","enrollment":60},{"nctId":"NCT07238933","phase":"","title":"Neurological Events and Unforeseen Risks After Locoregional-anesthesia","status":"NOT_YET_RECRUITING","sponsor":"Societa Italiana Anestesia Analgesia Rianimazione e Terapia Intensiva","startDate":"2025-12-01","conditions":"Regional Anesthesia, Regional Anesthesia Block","enrollment":3396},{"nctId":"NCT06883279","phase":"NA","title":"Effect of Interscalene Block Methods on Rebound Pain","status":"COMPLETED","sponsor":"Ankara City Hospital Bilkent","startDate":"2025-03-20","conditions":"Anesthesia, Pain, Shoulder, Pain, Postoperative","enrollment":85},{"nctId":"NCT06906458","phase":"","title":"Impact of Paresthesia on Postoperative Neurological Symptoms","status":"COMPLETED","sponsor":"Ankara City Hospital Bilkent","startDate":"2025-04-11","conditions":"Interscalene Block, Postoperative Pain","enrollment":120},{"nctId":"NCT05868330","phase":"PHASE4","title":"Comparison of Interscalene Catheter to Single Injection Interscalene Blocks for Total Shoulder Arthroplasties","status":"RECRUITING","sponsor":"Melinda Seering","startDate":"2024-08-19","conditions":"Post Operative Pain, Anesthesia, Nerve Block","enrollment":56},{"nctId":"NCT07221019","phase":"PHASE4","title":"Single Shot Exparel vs Catheters in Lower Extremity Trauma","status":"RECRUITING","sponsor":"George Washington University","startDate":"2025-09-12","conditions":"Fracture Dislocation of Ankle Joint, Fracture Leg, Fracture Femur","enrollment":90},{"nctId":"NCT06042608","phase":"NA","title":"Evaluating Intercostobrachial Nerve Block's Effect on Pain Control After Shoulder Replacement","status":"COMPLETED","sponsor":"University of Texas Southwestern Medical Center","startDate":"2024-09-10","conditions":"Postoperative Pain, Acute, Shoulder Pain","enrollment":12},{"nctId":"NCT04209504","phase":"","title":"Evaluating Hemidiaphragmatic Paralysis With Prolonged Neural Blockade From an Interscalene Brachial Plexus Block","status":"RECRUITING","sponsor":"Duke University","startDate":"2021-10-12","conditions":"Shoulder Surgery, Shoulder Pain, Shoulder Injuries","enrollment":60},{"nctId":"NCT07173894","phase":"NA","title":"Effectiveness of Field Block Compared With Interscalene Block in Shoulder Surgery","status":"RECRUITING","sponsor":"Rabin Medical Center","startDate":"2024-08-01","conditions":"Regional Anesthesia Techniques in Shoulder Surgery","enrollment":64},{"nctId":"NCT06620471","phase":"","title":"Assessing the Enhanced Precision: The Value of Impedance in Ultrasound-Guided Nerve Blocks (Axillary, Interscalene, Popliteal Sciatic), an Exploratory Prospective Observational Study","status":"RECRUITING","sponsor":"Lebanese American University","startDate":"2024-09-14","conditions":"Impedance, Axillary Nerve Block, Ultrasound-Guided Nerve Blocks","enrollment":100},{"nctId":"NCT07081672","phase":"NA","title":"Impact of Interscalene Block Combined With General Anesthesia on Burst Suppression in Shoulder Surgery Patients","status":"COMPLETED","sponsor":"Bezmialem Vakif University","startDate":"2025-01-29","conditions":"Burst Suppression, Electroencephalogram, Interscalene Brachial Plexus Block","enrollment":50},{"nctId":"NCT07090733","phase":"NA","title":"Ultrasound Guided Interscalene, Suprascapular and Anterior Glenoid Nerve Blocks on Diaphragmatic Excursion and Analgesia Following Arthroscopic Shoulder 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Cuff Tear","enrollment":100},{"nctId":"NCT06638112","phase":"NA","title":"Comparison of Postoperative Quality of Recovery by Anesthetic Method in Patients Undergoing Shoulder Arthroscopy","status":"RECRUITING","sponsor":"Seoul National University Hospital","startDate":"2024-10-30","conditions":"Shoulder Arthroscopy","enrollment":140},{"nctId":"NCT06972680","phase":"","title":"Determination of the Optimal Volume of 0.5% Bupivacaine Liposome in Single-Injection Interscalene Brachial Plexus Block: A Bayesian Phase I/II Trial","status":"ENROLLING_BY_INVITATION","sponsor":"Affiliated Hospital of Jiaxing University","startDate":"2025-05-01","conditions":"Shoulder Arthroscopy","enrollment":60},{"nctId":"NCT06953947","phase":"NA","title":"Interscalene Versus Costoclavicular Blocks for Shoulder Surgery","status":"COMPLETED","sponsor":"Sakarya University","startDate":"2022-10-01","conditions":"Postoperative Pain, Shoulder Surgeries Operations, Regional Anesthesia","enrollment":62},{"nctId":"NCT05763667","phase":"PHASE3","title":"Pilot: Intraoperative TAP Block and Post-operative Pain Control for Minimally Invasive Hysterectomy for Endometrial Cancer","status":"COMPLETED","sponsor":"Tufts Medical Center","startDate":"2024-01-01","conditions":"Post Operative Pain, Gynecologic Cancer","enrollment":15},{"nctId":"NCT05649644","phase":"NA","title":"Sensorimotor Block Dynamics and Hemidiaphragmatic Palsy: Selective Trunk Block vs Supraclavicular Brachial Plexus Block","status":"RECRUITING","sponsor":"Chinese University of Hong Kong","startDate":"2023-05-18","conditions":"Musculoskeletal Diseases or Conditions","enrollment":50},{"nctId":"NCT06917820","phase":"NA","title":"Clavipectoral Block Versus Interscalene Block for Postoperative Analgesia in Midshaft Clavicular Surgery","status":"RECRUITING","sponsor":"Ain Shams University","startDate":"2025-01-01","conditions":"Post Operative Pain","enrollment":50},{"nctId":"NCT06827912","phase":"NA","title":"Comparison of Interscalene and Anterior Shoulder Capsule Block","status":"COMPLETED","sponsor":"Amasya University","startDate":"2025-02-20","conditions":"Pain Intensity Assessment, Interscalene Nerve Block, Shoulder Anterior Capsule Block (SHAC Block)","enrollment":46},{"nctId":"NCT05824832","phase":"PHASE4","title":"Buprenorphine, Clonidine, and Dexamethasone on Duration of Brachial Plexus Blocks for Upper Extremity Surgery","status":"RECRUITING","sponsor":"Loyola University","startDate":"2023-02-28","conditions":"Pain, Postoperative","enrollment":120},{"nctId":"NCT06855381","phase":"NA","title":"Ultrasound-guided Interscalene Brachial Plexus Block: Single Bolus Vs Continuous Catheter Placement in Arthroscopic Rotator Cuff Repair","status":"ACTIVE_NOT_RECRUITING","sponsor":"University of Foggia","startDate":"2022-02-01","conditions":"Anesthesia","enrollment":80},{"nctId":"NCT06015204","phase":"NA","title":"Assessment of the C8 Dermatomal Block with Photoplethysmographic Amplitude After Interscalene Brachial Plexus Block","status":"COMPLETED","sponsor":"JongHae Kim","startDate":"2023-09-13","conditions":"Brachial Plexus Block, Oximetry","enrollment":98},{"nctId":"NCT05499897","phase":"NA","title":"The Effect of Interscalene Block on Wound Healing and Immunity in Open Shoulder Surgeries","status":"COMPLETED","sponsor":"Yuzuncu Yil University","startDate":"2023-01-01","conditions":"Ultrasound gıided Interscalene Block","enrollment":40},{"nctId":"NCT06765278","phase":"NA","title":"Anterior Glenoid Nerve Block Versus Pericapsular Nerve Group Block Versus Interscalene Brachial Plexus Block for Postoperative Pain Management in Shoulder Arthroscopic Surgeries","status":"RECRUITING","sponsor":"Ain Shams University","startDate":"2025-01-13","conditions":"Anterior Glenoid Nerve Block, Pericapsular Nerve Group Block, Interscalene Brachial Plexus Block","enrollment":49},{"nctId":"NCT05686395","phase":"NA","title":"Pain Control After Arthroscopic Shoulder Surgeries","status":"COMPLETED","sponsor":"Tanta University","startDate":"2023-01-23","conditions":"Post Operative Pain","enrollment":90},{"nctId":"NCT04867369","phase":"PHASE4","title":"Pecs II Block Versus Surgeon Infiltration for Open Subpectoral Biceps Tenodesis","status":"COMPLETED","sponsor":"NYU Langone Health","startDate":"2021-07-14","conditions":"Tendonitis","enrollment":160},{"nctId":"NCT06674551","phase":"NA","title":"Suprascapular and Axillary Versus Interscalene Blocks Regarding Phrenic Affection in Shoulder Surgeries","status":"NOT_YET_RECRUITING","sponsor":"Ain Shams University","startDate":"2024-11-20","conditions":"Interscalene Nerve Block, Suprascapular Nerve, Shoulder Surgery","enrollment":60},{"nctId":"NCT05833113","phase":"NA","title":"Effects of Transcutaneous Electrical Nerve Stimulation for Postoperative Quality of Recovery After Shoulder Surgery","status":"COMPLETED","sponsor":"Karaman Training and Research Hospital","startDate":"2023-04-27","conditions":"Quality of Recovery","enrollment":80},{"nctId":"NCT06253442","phase":"NA","title":"Comparison Between Interscalene Block and Combined Suprascapular and Axillary Blocks for Proximal Humerus Fracture Surgeries.","status":"COMPLETED","sponsor":"Ain Shams University","startDate":"2024-02-10","conditions":"Proximal Humerus Fractures","enrollment":50},{"nctId":"NCT06139666","phase":"PHASE4","title":"The Effect of Liposomal Bupivacaine Nerve Block (Exparel) in Rotator Cuff Surgery","status":"ENROLLING_BY_INVITATION","sponsor":"The Cooper Health System","startDate":"2019-07-11","conditions":"Rotator Cuff Tears, Postoperative Pain, Opioid Use","enrollment":160},{"nctId":"NCT03718858","phase":"NA","title":"The Impact of Interscalene Block on Sleep Disordered Breathing","status":"COMPLETED","sponsor":"Women's College Hospital","startDate":"2021-07-23","conditions":"Sleep Disordered Breathing, Obstructive Sleep Apnea","enrollment":76},{"nctId":"NCT06519851","phase":"NA","title":"Combined Shoulder Anterior Capsule and Suprascapular Nerve Block Versus Interscalene Block in Shoulder Surgery","status":"NOT_YET_RECRUITING","sponsor":"Assiut University","startDate":"2024-08","conditions":"Shoulder Pain","enrollment":42},{"nctId":"NCT06531590","phase":"","title":"Anterior Shoulder Dislocation at Emergency Department","status":"RECRUITING","sponsor":"Saglik Bilimleri Universitesi","startDate":"2024-03-01","conditions":"Shoulder Dislocation, Analgesia, Pain, Shoulder","enrollment":140},{"nctId":"NCT03809442","phase":"PHASE4","title":"Analgesic Efficacy of Ropivacaine Alone or in Combination With Adjuvants on Post-operative Analgesia Following Video-Assisted Thoracoscopic Surgery.","status":"COMPLETED","sponsor":"Aga Khan University","startDate":"2019-06-25","conditions":"Postoperative Analgesia","enrollment":116},{"nctId":"NCT03225508","phase":"","title":"Diaphragmatic Motion Using Linear Ultrasound","status":"COMPLETED","sponsor":"University Health Network, Toronto","startDate":"2017-06-09","conditions":"Diaphragm; Movement, Examination of Diaphragm Movement Using Ultrasound","enrollment":175},{"nctId":"NCT05782491","phase":"NA","title":"Awake Axillary Impella 5.5 Placement - A Feasibility Trial","status":"WITHDRAWN","sponsor":"University of Pennsylvania","startDate":"2024-04","conditions":"Cardiogenic Shock","enrollment":""},{"nctId":"NCT06240884","phase":"NA","title":"Postoperative Analgesic Effect of Infraspinatus-teres Minor Inter-fascial Block in Patients Undergoing Shoulder Surgery","status":"COMPLETED","sponsor":"Affiliated Hospital of Jiaxing University","startDate":"2023-12-08","conditions":"Shoulder Pain","enrollment":74},{"nctId":"NCT05848375","phase":"NA","title":"Rotator Cuff Repair Under Isolated Loco-regional Anesthesia","status":"RECRUITING","sponsor":"Elsan","startDate":"2023-11-13","conditions":"Shoulder Cuff Surgical Repair","enrollment":80},{"nctId":"NCT04020601","phase":"PHASE2, PHASE3","title":"The Impact of a Preoperative Nerve Block on the Consumption of Sevoflurane in Total Shoulder Arthroplasty","status":"TERMINATED","sponsor":"University of Alberta","startDate":"2019-08-01","conditions":"Rotator Cuff Injuries, Anesthesia; Functional","enrollment":17},{"nctId":"NCT06419556","phase":"NA","title":"Analgesic Efficacy of an Intermediate CPB in Neck Surgeries.","status":"RECRUITING","sponsor":"Cairo University","startDate":"2023-03-05","conditions":"Anesthesia, Thyroid, Neck","enrollment":54},{"nctId":"NCT05005260","phase":"PHASE4","title":"Liposomal Bupivacaine Single-Injection Interscalene Block vs. Continuous Interscalene Block for Primary Total Shoulder Arthroplasty","status":"COMPLETED","sponsor":"Mayo Clinic","startDate":"2021-10-14","conditions":"Pain, Postoperative, Brachial Plexus Block","enrollment":88},{"nctId":"NCT06396455","phase":"NA","title":"Ultrasound Guided Suprascapular Nerve Block Versus ISB Block in Arthroscopic Shoulder Surgery","status":"COMPLETED","sponsor":"Benha University","startDate":"2023-01-26","conditions":"Shoulder Surgery","enrollment":60},{"nctId":"NCT05960799","phase":"NA","title":"Catheter Over Needle (CON) vs Catheter Through Needle (CTN).","status":"RECRUITING","sponsor":"Pontificia Universidad Catolica de Chile","startDate":"2023-10-30","conditions":"Shoulder Disease","enrollment":70},{"nctId":"NCT03638960","phase":"PHASE4","title":"Interscalene Single Shot With Plain Bupivacaine Versus Liposomal Bupivacaine for Arthroscopic Shoulder Surgery","status":"COMPLETED","sponsor":"University of Southern California","startDate":"2019-02-21","conditions":"Shoulder Pain, Postoperative Pain","enrollment":40},{"nctId":"NCT02666118","phase":"NA","title":"Efficacy of Nerve Blockade Performed Prior to Surgical Intervention Versus Following Surgical Intervention","status":"ACTIVE_NOT_RECRUITING","sponsor":"Children's Hospital Medical Center, Cincinnati","startDate":"2013-02","conditions":"Pain, Shoulder Injury","enrollment":79},{"nctId":"NCT05269251","phase":"","title":"Effects of Brachial Plexus Block on Tissue Oxygenation","status":"COMPLETED","sponsor":"Gazi University","startDate":"2021-04-12","conditions":"Tissue Oxygenation","enrollment":99},{"nctId":"NCT04930393","phase":"NA","title":"Evaluating the Efficacy of PECS II Block Versus Axillary Ring Block in Rotator Cuff Repair Patients","status":"UNKNOWN","sponsor":"University of Southern California","startDate":"2021-09-07","conditions":"Shoulder Pain","enrollment":74},{"nctId":"NCT05775861","phase":"NA","title":"Dexmedetomidine Added to Ropivacaine Single Shot vs Continuous Interscalene Nerve Block","status":"UNKNOWN","sponsor":"Ciusss de L'Est de l'Île de Montréal","startDate":"2022-08-23","conditions":"Anesthesia, Shoulder Pain, Post Operative Pain","enrollment":96},{"nctId":"NCT06235879","phase":"NA","title":"Comparison Between Pericapsular Nerve Group (PENG) Block and Interscalene Brachial Plexus Block for Postoperative Analgesia Following Shoulder Arthroscopy","status":"UNKNOWN","sponsor":"Ain Shams University","startDate":"2024-02-01","conditions":"Pericapsular Nerve Block, Interscalene Brachial Plexus Block, Shoulder Arthroscopy","enrollment":50},{"nctId":"NCT05944497","phase":"","title":"Changes in Pulse Wave Transit Time and Its Variability After Placement of Interscalene Brachial Plexus Block","status":"COMPLETED","sponsor":"JongHae Kim","startDate":"2023-07-31","conditions":"Interscalene Brachial Plexus Block","enrollment":59},{"nctId":"NCT06208774","phase":"NA","title":"Pericapsular Nerve Group Block vs Interscalene Block for Shoulder Arthroscopy","status":"UNKNOWN","sponsor":"Cairo University","startDate":"2023-12-20","conditions":"Anesthesia, Regional Anesthesia Morbidity, Shoulder 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