Superficial Cervical Plexus Block

This study aims to determine the minimum effective volume (MEV90) of local anesthetic required to achieve sensory block of the supraclavicular nerves when performing a single-shot ultrasound-guided interscalene brachial plexus block (ISB). These nerves provide sensation to the skin over the clavicle and shoulder and are often involved in surgeries such as shoulder arthroscopy and clavicle repair.

Shoulder arthroscopy is one of the frequently performed surgical procedures today. After shoulder surgery, ensuring sufficent analgesia is necessary for both the patient's comfort and for the early and regular performance of the required postoperative rehabilitation exercises. Nerve blocks provide better pain control, opioid consumption in the postoperative period, and consequently have advantages such as fewer side effects and lower risks of pulmonary and cardiac complications. Multimodal analgesia approach is preferred for patients undergoing shoulder arthroscopy. Along with intravenous analgesic agents, peripheral nerve blocks (applied to every suitable and consenting patient) are performed based on patient preference. This study aims to compare the analgesic efficacy in the postoperative period of patients undergoing shoulder arthroscopy with a combination of interscalene brachial plexus block and superficial cervical plexus block with serratus posterior superior intercostal plane block.

This study aims to evaluate and compare the efficacy and safety of ultrasound guided superficial cervical plexus block (SCPB) with either clavipectoral fascial plane block (CPB) or interscalene brachial plexus block (ISBP) as an anesthetic technique for clavicle surgeries.