major abdominal surgery
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - Patient undergoing major abdominal surgery with laparotomy - Age = 18 years Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 35 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 15
Exclusion criteria
Exclusion criteria: - Major abdominal surgery by laparoscopic route - Contraindication to the installation of a thoracic PDA - Contraindication to IV lidocaine - Contraindication to ropivacaine: allergy to LA, acute porphyria - Major hepatectomy with clamping
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Main Objective: to assess the plasma concentrations of lidocaine and ropivacaine during the combination of perimedullary anesthesia and intravenous lidocaine during major abdominal surgery.;Secondary Objective: look for unwanted side effects associated with local anesthetics.;Primary end point(s): the plasma concentration of ropivacaine and lidocaine outside the safety range at different times of treatment. For lidocaine, the plasma safety range is 1.4 to 6 mg/ml, neurotoxicity appears from 15mg/ml, cardiotoxicity from 21 mg/ml. For ropivacaine, the usual total venous concentration not to be exceeded is around 2.2 microg.ml-1 ;Timepoint(s) of evaluation of this end point: 48 hours | — |
Secondary
| Measure | Time frame |
|---|---|
| Secondary end point(s): Investigation of clinical systemic toxicity to local anesthetics within 48 hours postoperatively;Timepoint(s) of evaluation of this end point: 48 hours | — |
Countries
France
Contacts
CHU Amiens-Picardie