Shoulder Surgery, Interscalene Nerve Block, Ropivacaine
Conditions
Brief summary
It is established that the local anesthetic that is administered during an interscalene block affects the autonomic outflow to the heart. This is very well seen during shoulder surgery when the patient is positioned in beach chair pasition. The investigators want to study the different effect of the two concentrations (0.5% and 0.375%) of ropivacaine on the autonomic nervous system through blood pressure and heart rate measurements.
Interventions
PROCEDUREInterscalene nerve block
Sponsors
Larissa University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Caregiver)
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Elective shoulder surgery * Age 18- 80 years old * ASA I - IV * Beach chair position
Exclusion criteria
* Coagulopathy disorders * Infection at the puncture site for the interscalene block * Neurological deficit on the side to be operated * Allergy to local anesthetics * Psychiatric disorders * Patient's refusal * Problems with patient communication * Failure of the interscalene block
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Blood pressure fluctuations | Completion of the surgery |
Secondary
| Measure | Time frame |
|---|---|
| Heart rate fluctuations | Completion of surgery |
Countries
Greece
Contacts
Primary ContactMarina Simaioforidou, Medicine
Outcome results
None listed