Comparison ultrasound-guided vs. Nerve-controlled peripheral nerve blocks of the lower extremity in terms of needle-nerve distance, block characteristics and magnetic resonance tomographic and sonographic changes in the nerve

Not Applicable

• Conditions: G57; Mononeuropathies of lower limb

• Registration Number: DRKS00008767
• Lead Sponsor: niversitätsmedizin GöttingenZentrum Anästhesiologie, Rettungs- und Intensivmedizin

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2015-06-23
• Study Completion: 2016-10-16
• Results First Posted: 2019-04-24
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Complete
• Sex: All
• Target Recruitment: 37

Inclusion Criteria

In the study patients will be included , who undergo electively an intervention of the lower limb-surgery (eg, knee joint and ankle arthroscopy, metal distances, foot surgery), where standard general anesthesia or peripheral nerve block would be carried out by nerve stimulator or ultrasound.
The study included only patients able to consent to participate.
After consent to the study, the patients will be enrolled, which get as anesthetic procedures a combination anesthesia or regional anesthesia with mono-block of the sciatic nerve.

Exclusion Criteria

No consent, lack of capacity to consent.
Pre-existing nerve damage, polyneuropathy, infection in the area of any planned nerve blockade, muscle and nerve disease, allergy to local anesthetics, heart failure> NYHA II, severe lung disease, known strong postoperative nausea and vomiting, known or suspected difficult airway management.

Study & Design

• Study Type: interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
1) Sonografic distance between needle tip and nerve at a stimulation current of 0.5mA while nerve blockade preoperatively<br>2) Sonographic measurement of nerve cross-section before and after injection of the local anesthetic at the plant nerve block preoperatively<br>3) Acquisition MRI-morphological changes (nervous edema, inflammation, density) MRI pre- ( 12 hours ago) and postoperatively (12 hours later)<br>

Secondary Outcome Measures

Name	Time	Method
1) Patient Satisfaction - Postoperative care unit, 1-6 grade<br>2) Post-operative pain - Postoperative care unit, Nummeric rating scale (1-10)<br>3) PONV - Apple Score, Postoperative care unit<br>4) hemodynamic stability - anesthesia protocol<br>5) process times - anesthesia protocol