Distribution Circumferential Versus Non Circumferential of Mepivacaine in the Median and Ulnar Nerves

Complexo Hospitalario Universitario de A Coruña

Status and phase: Completed; Phase 4

Conditions: Anesthesia

Treatments: Procedure: Non circumferential spread in ultrasound-guided median and ulnar nerves block; Procedure: Circumferential spread of the mepivacaine ultrasonographic guided around the median and ulnar nerves at the elbow

Study type: Interventional

Funder types: Other

Identifiers

NCT01603680

ArAL 11.1

2011-002608-34 (EudraCT Number)

Details and patient eligibility

About

1. Evaluation of the efficacy of the circumferential versus non circumferential distribution of mepivacaine around the median and ulnar nerves.
2. Evaluation the onset of action of mepivacaine in circumferential versus non circumferential distribution around the median and ulnar nerves.
3. Spread of mepivacaine after injection guided by ultrasonography.
4. Complications of both anesthetic techniques in postoperative time.

Enrollment: 124 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Scheduled patients for surgery of carpal tunnel including patients in ASA I-III status, without exclusion criteria. The principal investigator study and/or other designated site staff will obtain written informed consent from all research patients.

Exclusion criteria

• Abnormal bleeding, infection in the punction side, allergy or other problems with the medication of the study, muscular or nerve diseases, patients < 18 years old, pregnancy, cognitive disease or reject of the patient

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Single Group Assignment

Masking: Quadruple Blind

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124 participants in 2 patient groups

Circumferential (C)

Other group

Description:

"Circumferential"(C) spread group will be defined as mepivacaine injectate visualized by ultrasonography all around the median and ulnar nerves imaged in short axis.

Treatment:

Procedure: Circumferential spread of the mepivacaine ultrasonographic guided around the median and ulnar nerves at the elbow

Non circumferential (NC)

Other group

Description:

Local anesthetic spread will be asymmetrical around the median and ulnar nerves, the mepivacaine will be partially in contact with the nerve

Treatment:

Procedure: Non circumferential spread in ultrasound-guided median and ulnar nerves block