Anesthesia, Shoulder Disease
Conditions
Brief summary
The investigators have recently shown that LSIB in combination with a suprascapular and a cervical plexus block is a very good alternative for arthroscopic shoulder surgery. However, the investigators believe the total volume of local anesthetic for LSIB may be reduced. For shoulder surgery there is no need to block the medial cord and the investigators therefore hypothesize a significantly lower MEV95% by applying a selective lateral and posterior cord block
Detailed description
The MEV for a successful block in 50% of the participants will be determined by using the staircase up-and-down method introduced by Dixon and Massey. Logistic regression and probit transformation will be applied to estimate the MEV for a successful block in 95% of the participants.
Interventions
DRUGRopivacaine
Minimum effective volume
Sponsors
University Hospital of North Norway
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
* . Inclusion criteria are American Society of Anesthesiologists (ASA) physical status I-III, age between 18 and 70 years and body mass index (BMI) between 20 and 35 kg/m2.
Exclusion criteria
*
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Minimum effective volume (95%) | 30 minutes |
Countries
Norway
Outcome results
None listed