Pain
Conditions
Brief summary
Interscalene block has been the traditional regional anesthesia for shoulder surgery and postoperative pain. However, the risk of phrenic nerve palsy and irreversible nerve injury have encouraged search for alternative methods.
Detailed description
Analyzing block effects of the lateral sagittal infraclavicular brachial plexus block(posterior and lateral chord), the investigators found it affecting all shoulder relevant nerves , except for the suprascapular and the supraclavicular nerves. Accordingly, by combining a superficial cervical plexus block, suprascapular nerve block and block of the posterior and lateral chords infraclavicularly, the investigators believe this novel combination would provide anesthesia for patients scheduled for shoulder surgery.
Interventions
Nerve block: 31 ml ropivacaine 7.5 mg/ml (Lateral sagittal infraclavicular brachial plexus block) + 4 ml ropivacaine 5 mg/ml (suprascapular nerve block) + 5 ml ropivacaine 5 mg/ml (superficial cervical plexus block)
Sponsors
Study design
Eligibility
Inclusion criteria
* Patients scheduled for shoulder surgery. * American Society of Anesthesiologist grad I-III, * 18-70 years, * BMI 20-35,
Exclusion criteria
* Pregnancy, * coagulopathy, * allergy to local anesthetics, * atrioventricular block, * peripheral neuropathy or drug-treated diabetes. * Patients using anticoagulation other than acetylsalicylic acid or dipyridamol will be excluded.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The need for general anaesthesia | Intraoperatively | Investigators will record the number of patients who need to be converted to general anaesthesia |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Surgeons satisfaction with the working conditions | Intraoperatively | Graded in a) Good and b) Poor |
Countries
Norway