Effect of 0.5% vs 0.375% Ropivacaine on Autonomous Nervous System

Larissa University Hospital100 enrolled

Overview

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.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

PREVENTION

Masking

DOUBLE

Enrollment

100

Conditions

Shoulder Surgery Interscalene Nerve Block Ropivacaine

Interventions

Interscalene nerve blockPROCEDURE

Eligibility

Sex: ALLMin age: 18 YearsMax age: 80 Years

Medical Language ↔ Plain English

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

Locations (1)

Private Clinic of Larissa "Asklipeiio"

Larissa, Larissa, Greece

RECRUITING

Outcomes

Primary Outcomes

Blood pressure fluctuations

Time frame: Completion of the surgery

Secondary Outcomes

Heart rate fluctuations

Time frame: Completion of surgery

Central Contacts

Marina Simaioforidou, Medicine

CONTACT

0000306972202573 msimaiof@otenet.gr

Data from ClinicalTrials.gov

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