Femoral artery nerve block for tourniquet pain during lower leg fracture surgery
Compares two ultrasound-guided femoral artery block methods against saline for tourniquet-related high blood pressure.
Plain-language title generated from the registry record
Registry title: A Long Axis Approach to the Femoral Artery Block (FAB) for Managing Tourniquet Pain and Hypertension in Below-the-Knee Fracture Surgery
Key facts
- Where
- Athens, GreeceSee the site
Where in Greece
- University General Hospital AttikonAthens, GreeceTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- National and Kapodistrian University of Athens
- Trial code
- NCT07548567
- Record updated
- 6 July 2026
- Original description
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.Read full original descriptionShow less
Turning the Probe, Changing the View: A Novel Long Axis Approach to the Femoral Artery Block (FAB) for Managing Tourniquet Pain and Hypertension in Below-the-Knee Fracture Surgery: A Prospective, Randomized, Double-Blind Controlled Trial
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.
Inclusion: Age >18 years; Physical status ASA I-III; Fluent in Greek or English; Scheduled surgery: below-knee fractures; Tourniquet duration ≥45 minutes.
Exclusion: Chronic pain therapy; Known allergy to study drugs; Systemic neurological disease affecting peripheral nerves; Uncontrolled hypertension; Refusal to participate; Local inflammation at block site; Morbid obesity (BMI >40); Communication inability; Diabetic neuropathy.