Pulse Wave Transit Time After Infraclavicular Block

This prospective observational study aims to evaluate the time-dependent changes in Pulse Wave Transit Time (PWTT) following ultrasound-guided infraclavicular brachial plexus block. PWTT is a non-invasive hemodynamic parameter reflecting vascular tone and sympathetic nervous system activity. Patients undergoing upper extremity surgery under infraclavicular block will be monitored using standard perioperative monitoring devices. PWTT measurements will be obtained before and after block placement at predefined time intervals. Secondary outcomes will include perfusion index, skin temperature, heart rate, blood pressure, respiratory rate, and oxygen saturation. The study seeks to determine whether PWTT can serve as an objective and non-invasive marker of sympathetic blockade following infraclavicular block.

NCT Number	NCT07669688
Lead Sponsor	Sakarya University
Conditions	Infraclavicular Brachial Plexus Block
Enrollment	25 participants
Start Date	2026-07-20
Primary Completion	2026-10-15 (estimated)
Study Completion	2026-11-15 (estimated)
Updated on ClinicalTrials.gov	2026-07-07