Evaluation of the in-plane regional anesthesia technique for C5/C6 nerve root block for shoulder arthroscopy - Impact of puncture site (approach) and overall local anesthetic dosage (volume) on the incidence of temporary phrenic nerve paralysis and block quality.

Not Applicable

Conditions: S43
Shoulder lesions
M75
Dislocation, sprain and strain of joints and ligaments of shoulder girdle

Registration Number: DRKS00023030

Lead Sponsor: Kreisklinikum Siegen: Klinik für Anästhesie, Intensivmedizin, Schmerztherapie und Notfallmedizin

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Pending

Sex: All

Target Recruitment: 80

Inclusion Criteria

Written consent, elective arthroscopic shoulder surgery, ASA I-III

Exclusion Criteria

- Age over 60 years
- ASA>III
- Pregnancy or breastfeeding women
- Emergency patients
- Estimated postoperative intensive stay
- Known paresis of The N. phrenicus and the N. recurrens
- Infections in the area of the puncture area
- Pre- surgery on the ipsilateral neck side
- CNS diseases or pre-known nerve lesions on the shoulder to be operated on
- Known coagulopathy
- allergies to local anesthetics of the amide type
- Disposition for malignant hyperthermia
- Very strong disposition for PONV
- Patients without German language skills

Study & Design

Study Type: interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Spirometric Parameters FVC, FEV1 and PEF (percentage changes pre-to postopertively recorded values) and pulse oximetry in the PACU at the time t0 h (as soon as the patient was alert and cooperative, Aldrete Score >12), t1 h (60 min), t2 h (120 min) and t24 h.<br>In addition, the diaphragm excursion is sonographically evaluated at the time t0 h, t1 h, t2 h and t24 h to verify the phrenic nerve paralysis.

Secondary Outcome Measures

Name	Time	Method
1. Analgesia based on NRS Score (numerical rating scale) at the time t0 h, t1 h, t2 h and t24 h. <br>2. Duration of blockage until the first request for pain medication.<br>3. Opiate consumption in morphine equivalents up to t24 h.