Pain
Conditions
Keywords
Epidural analgesia, Contraindications, Paravertebral nerve block analgesia, ropivacaine, Visual analogical scale, Morphine, Side effects, Pain and thoracotomy
Brief summary
osteolateral thoracotomy is a painful surgical procedure.Thoracic epidural analgesia (TEA) is usually considered as the gold standard for postoperative thoracic analgesia. Unfortunately, it's not always possible to realize it because of contraindications or because of technical failures.Analgesia using a paravertebral block is an alternative to the TEA : it provides an unilateral sensitive and sympathetic block using a catheter.In our study, the catheter will be placed by the thoracic surgeon at the end of the surgical procedure, under direct vision, to insure maximal security also on patients on antiplatelets agents, anticoagulants or with haemostasis disorders (the placement of the catheter by the anaesthetist with the loss of resistance technique is contraindicated in these cases).Patients will be randomized to receive either a continuous 48-hours infusion of ropivacaine 0,5% or saline serum in the control group.All patients are connected to a PCA pump with intravenous morphine and will receive paracetamol and nefopam.The visual analogic scale (VAS) at rest and on movement, total morphine consumption and side effects will be recorded during the first 48 hours after surgery. The aim of this study is to prove a decrease of pain at rest and on movement, a decrease of the cumulated total morphine dose consumption and a decrease of the side effects (nausea, vomiting, pruritus, sedation, bradypnea, urinary retention).
Interventions
DRUGropivacaine
Ropivacaine 0.5% 0.1 ml/kg per hour
OTHERnacl 0,9%
saline 0.9% 0.1 ml/kg per hour
Sponsors
University Hospital, Strasbourg, France
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
* Patients scheduled for thoracotomy who presented with contraindications to TEA.Contraindications to TEA are : * Patient's refusal after informations about advantages and risks of the technique * Anti platelets treatment that can't be discontinued * Anticoagulants at a curative dosage- haemostasis and/or coagulation disorders: thrombopenia \< 100.000/mm3, ACT \> 1,5 / control, PTT \< 75%- Systemic or local infection of the puncture point * 2 and 3 grade atrio-ventricular heart block without pacing * Severe aortic valve stenosis * Kyphoscoliosis * certain neurological disorders
Exclusion criteria
* Patient's refusal to participate in the study * Psychiatric disorder (impossibility to collect the informed consent) * Patient under juridical protection * On going an other study * Pregnancy, breastfeeding * Non balanced epilepsy * 3 grade auriculae-ventricular heart block without pacing * Severe hepatocellular insufficiency * Anti arrhythmic treatment : class III of the Vaughan William's classification- Skin infection of the puncture point * Allergy to aminoamides local anaesthetic * Surgical difficulties to insert paravertebral catheter
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Pain after surgery | first 48 hours after surgery |
Secondary
| Measure | Time frame |
|---|---|
| · Total dosis of morphine consumption, side effects nausea, vomiting,pruritus,Urinary retention, respiratory rate and sedation, · heart rate, blood pressure and peripheral saturation | first 48 hours after surgery |
Countries
France
Outcome results
None listed