Ultrasound-guided Femoral Nerve Block Without Electrical Stimulation of Peripheral Nerves

Femoral Nerve Block: Comparison of the Effectiveness of Ultrasound Control Versus Ultrasound Control With Electrical Stimulation of Peripheral Nerves

There is little work comparing the effectiveness of a femoral nerve block performed only under US guidance or US plus electrical stimulation of the peripheral nerve (EPN). The authors have shown the same effectiveness of these techniques(1).But the effectiveness of the blockade of the femoral nerve (complete blockade) performed in different ways turned out to be low valve: 71.7% for ultrasound in combination with electrical stimulation versus 69% for only ultrasound guidance.

Research hypothesis: the blockade of the femoral nerve performed only under ultrasound control has the same effectiveness as the blockade performed under the ultrasound control with EPN.

Inclusion Criteria:

• indication requiring anesthesia maintenance;
• patient's written consent about the type of anesthesia and possible complications of regional anesthesia

Exclusion Criteria:

• patient's refusal of application for the proposed form of anesthesia;
• patients younger than 18 years;
• patients weighing less than 50 kg;
• a physical status score of more than 3 determined by the American Society of Anesthesiologists (ASA);
• a history of allergic reactions to the drugs used;
• coagulopathies;
• infections of the skin at the injection site;
• neurological or neuromuscular diseases;
• severe liver diseases or kidney failures;
• an inability to cooperate with the patient.