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A Long Axis Approach to the Femoral Artery Block (FAB) for Managing Tourniquet Pain and Hypertension in Below-the-Knee Fracture Surgery

NCT07548567 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 84

Last updated 2026-07-06

No results posted yet for this study

Summary

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.

Conditions

  • Tourniquet Hypertension

Interventions

PROCEDURE

Femoral artery block - short-axis

Ultrasound-guided femoral artery block using short-axis in-plane technique with 10 mL ropivacaine 0.5%.

PROCEDURE

Femoral artery block - long-axis

Ultrasound-guided femoral artery block using long-axis in-plane technique with 10 mL ropivacaine 0.5%.

OTHER

Normal saline injection (control)

Ultrasound-guided femoral artery injection using 10 mL 0.9% normal saline.

Sponsors & Collaborators

  • National and Kapodistrian University of Athens

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-06-03
Primary Completion
2027-10-31
Completion
2028-02-29

Countries

  • Greece

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07548567 on ClinicalTrials.gov