Impedance can have an impact on nerve block during loco-regional anesthesia, particularly when using techniques such as nerve stimulation or ultrasound guidance to locate and block specific nerves. Impedance refers to the resistance to electrical current flow within tissue, and it can affect the ability to stimulate nerves or visualize them using ultrasound. The aim of this research is to assess the impedance across different tissue type during an axillary peripheral nerve block (skin, fat, fascia, muscle, nerve proximity). The results of this study would help clinicians performing nerve block to enhance the precision of needle placement, thus increase the success rate of nerve block and reduce adverse events such as intraneural or intravascular injections.
Individuals aged 18 years to 90 years old
No infection at the injection site
Patient signed the study consent form
No contraindications for nerve block
Patients not meeting the inclusion criteria
Patients with bleeding disorders or undergoing anticoagulation therapy
Pregnant patients
Patients with mental incapacity
Community sample
Cohort
Prospective
Not listed
Assess the impedance across different type of tissue during axillary, popliteal and interscalene nerve block
Measure impedance at different locations, different tissue types and different distances from the nerve (as recorded on the nerve stimulator)
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