A Long Axis Approach to the Femoral Artery Block (FAB) for Managing Tourniquet Pain and Hypertension in Below-the-Knee Fracture Surgery
Recruiting · NCT07548567 · Interventional (participants receive a specific treatment) · Lead sponsor: National and Kapodistrian University of Athens
View the official record on ClinicalTrials.gov →Interventions studied
What this trial is about
This is a prospective, randomized, double-blind controlled trial evaluating an ultrasound-guided femoral artery block (FAB) using a long-axis in-plane approach compared with a short-axis approach and a control group. The study will include adult patients (ASA I-III) undergoing below-the-knee fracture surgery with tourniquet application. All patients will receive standardized anesthesia including sciatic nerve block and total intravenous anesthesia. Participants will be randomized into three groups: short-axis FAB, long-axis FAB, or control (saline injection). The primary aim is to assess the effectiveness of the long-axis FAB in reducing tourniquet-induced hypertension. Secondary outcomes include hemodynamic stability, analgesic requirements, pain scores, block characteristics, and procedural performance metrics.
Who can take part
Inclusion criteria
- Age \>18 years
- Physical status ASA I-III
- Fluent in Greek or English
- Scheduled surgery: below-knee fractures
- Tourniquet duration ≥45 minutes
Exclusion criteria
- Refusal to participate
- Local inflammation at block site
- Known allergy to study drugs
- Morbid obesity (BMI \>40)
- Communication inability
- Systemic neurological disease affecting peripheral nerves
- Chronic pain therapy
- Diabetic neuropathy
- Uncontrolled hypertension
Where it is running
1 location listed.
- University General Hospital Attikon - Athens, Greece