- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02505204
PVB With vs. Without Clonidine for Ventral Hernia Repair
Paravertebral Block With Versus Without Clonidine for Patients Undergoing Ventral Hernia Repair: A Prospective Double-blinded Randomized Study
Paravertebral block (PVB) combined with light intravenous sedation was associated with a short hospital stay, less post-operative nausea and vomiting and reduced analgesic consumption compared to general anesthesia for ventral hernia repair. Given the effectiveness of PVB in the ventral hernia repair, it would be beneficial to study the effect of PVB with versus without clonidine in elderly patients.
Patients will be randomly allocated to one of 2 groups with 30 patients in each, using the sealed envelope technique. Group one will receive PVB with clonidine while group 2 will receive PVB with placebo.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Introduction
Paravertebral block (PVB) showed to be successful in both children and adults. It has been reported to be an excellent pain reliever and it reduces post-operative nausea and vomiting, in patients undergoing breast surgery. PVB has proven to be very useful as a regional anesthetic technique when it comes to surgeries involving lumbar and thoracic dermatome. It was shown that the PVB combined with light intravenous sedation was associated with a short hospital stay, less post-operative nausea and vomiting (PONV) and reduced analgesic consumption compared to general anesthesia for ventral hernia repair. Given the effectiveness of PVB in the ventral hernia repair, it would be beneficial to study the effect of PVB with versus without clonidine in elderly patients.
Objectives:
The primary objective of this study is to compare the hemodynamic stability in a ventral hernia repair using paravertebral block with clonidine versus the PVB without clonidine.
The secondary objectives include a comparison of PONV and postoperative analgesic consumption.
Materials and Methods
Study design and sampling This is a prospective study with a randomized double- blinded design that will be conducted between August 2015 and August 2016.
Patients scheduled for ventral hernia repair whose age is 65 years and older with American Society of Anesthesiologists (ASA) greater or equal to 2 will be included. Exclusion criteria comprised history of allergic reactions to local anesthetics, bleeding diatheses and spinal abnormality.
Patients will be randomly allocated to one of 2 groups with 30 patients in each, using the sealed envelope technique. Group one will receive PVB with clonidine while group 2 will receive PVB with placebo.
Anesthetic techniques Since this trial is double-blinded, a specialized nurse will prepare the syringes for each patient.
Paravertebral nerve block techniques Bilateral nerve-stimulator PVB will be performed at the levels of T9-T10 or T9-T11 according to the type of ventral hernia and the planned incision type. The patient will be anesthetized in the lateral decubitus position. Supplemental oxygen will be given by facemask and regular anesthetic monitors will be attached.
Each local anesthetic mixture will contain:
For group 1, the syringes will contain: lidocaine 2% 6 mL, lidocaine 2% 6 mL with epinephrine 5µg.mL-1, bupivacaine 0.5% 5 mL, fentanyl 1 mL (50µg) and clonidine 2 mL.
As for the group 2, the same anesthetic mixture will be administrated however the clonidine will be substituted with 2 mL saline.
Data collection
Demographic data, ASA score, type and duration of surgery will be recorded. Haemodynamics will be registered such as the mean arterial blood pressure, heart rate and oxygen saturation, preoperatively (baseline), intra-operatively (incision of skin, dissection of hernia, traction over the sac and closure of incision) and postoperatively.
As for postoperative analgesia consumption, patients with a VAS score between three and four are given Tramadol Hydrochloride 50-100 mg every 4- 6 hours. If the VAS score is greater or equal to five, patients receive 1 mg/kg Dolosal.
Post-operative nausea and vomiting will be recorded in the recovery room and in the regular ward. Pain assessment will be taken from patients by a verbal statement using Numeric Rating Scale.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Beirut, Lebanon
- Makassed General Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients scheduled for ventral hernia repair whose age is 65 years and older
- and with ASA greater or equal to 2
Exclusion Criteria:
- History of allergic reactions to local anesthetics
- Bleeding diatheses
- Spinal abnormality
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Clonidine
Will receive bilateral PVB with clonidine.
|
The anesthetic mixture will contain: lidocaine 2% 7 mL, lidocaine 2% 6 mL with epinephrine 5µg.mL-1, bupivacaine 0.5% 5 mL, and clonidine 2 mL.
|
Placebo Comparator: Placebo
Will receive bilateral PVB with placebo.
|
the same anesthetic mixture will be administrated however the clonidine will be substituted with 2 mL saline.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Hemodynamic stability recorded from electrocardiogram and pulse oximeter
Time Frame: within the first 48 hours after surgery
|
Compare the hemodynamic stability between the two groups
|
within the first 48 hours after surgery
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Postoperative nausea and vomiting recorded via questionnaire
Time Frame: within the first 48 hours after surgery
|
Comparison of postoperative nausea and vomiting between the two groups
|
within the first 48 hours after surgery
|
Postoperative analgesic consumption recorded via questionnaire
Time Frame: within the first 48 hours after surgery
|
Comparison of analgesic consumption between the two groups
|
within the first 48 hours after surgery
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Zoher Naja, MD, Chairperson of Anesthesia department
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathological Conditions, Anatomical
- Hernia, Abdominal
- Hernia
- Hernia, Ventral
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Autonomic Agents
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Sympatholytics
- Clonidine
Other Study ID Numbers
- 07/09/2015
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