Spinal Anesthesia Versus Combined Sciatic-femoral Nerve Block for Outpatient Knee Arthroscopy

ASST Gaetano Pini-CTO

Status and phase: Completed; Phase 4

Conditions: Knee Arthritis

Treatments: Procedure: Spinal anesthesia; Drug: prilocaine; Device: Sonoplex, Pajunk; Drug: mepivacaine; Procedure: Sciatic-femoral Nerve Block

Study type: Interventional

Funder types: Other

Identifiers

NCT02384915

IOGPGC07

Details and patient eligibility

About

The aim of the study is to compare the time of home discharge in day-case patients receiving either a spinal anesthesia or a combined sciatic-femoral nerve block for knee arthroscopy

Full description

Two groups: the first receive a spinal anesthesia injecting 2% hyperbaric prilocaine 40 mg with the patients in lateral decubitus and the surgical limb declive, the second a combined ultrasound-guided sciatic-femoral nerve block injecting 25 ml of 2% mepivacaine solution.

Onset time, performance time, duration of the block, time of voiding, as well as the time of home discharge will be evaluated.

Enrollment: 100 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• outpatients knee arthroscopy

Exclusion criteria

• diabetes
• allergy to local anesthetic
• patient refusal
• chronic opiods assumption

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

---

100 participants in 2 patient groups

Spinal anesthesia

Experimental group

Description:

Intrathecal injection of 2 ml (40 mg) of 2% hyperbaric prilocaine at L3-L4 interspaces through a 100mm Sprotte 25 G spinal needle (Pencan, b-brawn, Germay) in lateral decubitus position, (with limb to operate declive).

Treatment:

Drug: prilocaine

Procedure: Spinal anesthesia

peripheral nerve block

Active Comparator group

Description:

Ultrasound-guided sciatic-femoral nerve block injecting 25 ml of a 2% mepivacaine solution,15 ml on femoral nerve and 10 ml on sciatic nerve through a 80 mm 22g eco-reflex needle (Sonoplex, Pajunk, Germany)

Treatment:

Device: Sonoplex, Pajunk

Procedure: Sciatic-femoral Nerve Block

Drug: mepivacaine