Clinical Research Directory

Stellate Ganglion Block - Brief Technique Patient supine, neck slightly extended and turned away. Use ultrasound guidance at the C6 level. Identify the carotid artery, thyroid, longus colli muscle, and C6 transverse process. Insert the needle in-plane, avoiding vessels, toward the prevertebral fascia over the longus colli. After aspiration and confirmation of position, inject a small volume of local anesthetic. Observe for successful block, typically ipsilateral Horner syndrome (ptosis, miosis, facial anhidrosis). Monitor for complications such as vascular injection, hematoma, hoarseness, LAST, and airway compromise.

Ultrasound-Guided Median Nerve Hydrodissection - Brief Technique Position the patient with the forearm supinated. Use a high-frequency linear ultrasound probe to identify the median nerve. Scan the nerve in short axis and identify surrounding vessels and tendons. Insert the needle in-plane, keeping the tip continuously visible. Advance the needle adjacent to the median nerve, without entering the nerve. Inject a small amount of fluid to open the tissue plane around the nerve, then continue injection to achieve circumferential hydrodissection. Confirm separation of the nerve from surrounding structures on ultrasound. Monitor for pain, paresthesia, vascular puncture, or nerve injury. The total injected volume ranged from 5 to 10 mL for standard hydrodissection without steroid. Either normal saline or 5 percent dextrose in water was used,