Incidence of phrenic nerve palsy following interscalene versus supraclavicular nerve block catheter insertio
Not Applicable
- Conditions
- Incidences of phrenic nerve palsy following interscalene or supraclavicular nerve block catheters.
- Registration Number
- DRKS00006147
- Lead Sponsor
- niversitätsklinikum Marburg Klinik für Anästhesie und Intensivtherapie
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Complete
- Sex
- All
- Target Recruitment
- 114
Inclusion Criteria
elective arthroscopic shoulder surgery
indication for nerve block catheter, suspected acute postoperative pain, intraoperative pain reduction
> 18 years of age, fully compliant.
written formal consent for study inclusion
Exclusion Criteria
emergency surgery
<18 years of age
incompliant patients, patients without sufficient knowledge of german language
preexisting nerve damages of phrenic nerve and brachial plexus nerve components, phrenic nerve palsies at the site of the planned surgery
local infections
severe coagulopathy
local anesthetic allergy
no indication for nerve block catheter
Study & Design
- Study Type
- interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Measurements for signs of phrenic nerve palsy are performed before nerve block, after nerve block, postoperatively in the PACU and at the first postoperative day.<br><br>Ultrasound is used for evaluation of phrenic nerve dysfunction resulting in hemidiaphragmatic paresis.<br>Using B-Mode, diaphragm is displayed at midaxillary line. Normal excursions are shown as cephalad move and inspirations are shown as caudal movement of diaphragm and are measured in cm in normal breathing maneuvers as well as during sniffing maneuver. Moreover, paradoxic movements are investigated. Hemidiaphragmatic paresis is defined as paradoxic movement as well as incomplete movements of diaphragm during investigations using B-Mode and M-Mode for detailed analysis of movement.
- Secondary Outcome Measures
Name Time Method Quality of regional anesthesia (loss of temperature discrimination/ sensory block , motor block), NRS values, local anesthetic consumption, overall analgesic consumption, patient satisfaction (PPP33-Questionnaire), accidental cervical plexus anesthesia, nerve damages, Horner's syndrome, Hoarseness, Spirometry parameters, infection rates, pneumothoraces, LA-intoxication<br><br>Data is evaluated at time point mentioned above.<br><br>Moreover, patients are contacted 1 week after the surgery for investigating prolonged complications.