U.S., April 3 -- ClinicalTrials.gov registry received information related to the study (NCT07507227) titled 'Perfusion Index for Assessing Femoral and Sciatic Nerve Block Success in Lower Extremity Surgery' on March 27.

Brief Summary: Peripheral nerve blocks are increasingly used in lower extremity surgery as an alternative to general anesthesia. However, traditional methods used to assess block success, such as sensory and motor testing, are subjective, time-consuming, and dependent on patient cooperation.

The perfusion index (PI), measured non-invasively using pulse oximetry, reflects peripheral perfusion changes associated with sympathetic blockade and may serve as an early indicator of block effectiveness.

This study aims to evaluate...