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Comparing Analgesic Efficacy of Systemic Lidocaine Against Placebo in General Anesthesia in Bariatric Surgery (COALAS)

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ClinicalTrials.gov Identifier: NCT03667001
Recruitment Status : Completed
First Posted : September 12, 2018
Last Update Posted : July 28, 2021
Sponsor:
Information provided by (Responsible Party):
Miodrag Filipovic, Prof. Dr. med., Cantonal Hospital of St. Gallen

Brief Summary:

The investigators plan to evaluate the analgesic effect of systemic Lidocaine in addition to general anesthesia during bariatric surgery. Patients will be subdivided into a "Lidocaine group" and a "Control group".

The primary outcome will be the proportion of patients suffering from higher pain intensity within the first four hours after bariatric surgery.

Secondary outcomes include the average maximal pain intensity during first four hours and during 48 hours, total opiate consumption, occurence of postoperative nausea and vomiting, time to first defecation and total time spent in hospital.


Condition or disease Intervention/treatment Phase
Pain, Postoperative Drug: Lidocaine Hydrochloride Drug: Saline Solution Phase 3

Detailed Description:

Postoperative pain is a common problem in today's surgery, although pain management techniques have improved in the last years. Systemic application of lidocaine has gained interest since several studies have shown its analgesic, anti-inflammatory and antihyperalgesic properties. In this clinical trial the analgesic effect of intravenously administrated lidocaine is compared with placebo. Despite longstanding use as an antiarrhythmic agent and its use in many clinical trial as analgesic, lidocaine is not licensed for this indication and application. Current studies, setting the focus on abdominal surgery, indicated that the systemic application of lidocaine was associated with fewer intensity of pain at rest and during mobilization and resulted in a decrease of patients'opiate consumption.

The intervention to be studied will either be the additional application of systemic lidocaine 1% to general anesthesia in bariatric surgery or the application of placebo. Patients, randomly assigned to one study group, will be surveyed for 48 hours after completion of surgery, experienced pain, occurrence of PONV, time to first defecation and length of hospitalization will be monitored. The population to be studied will include 140 patients listed for bariatric surgery at the Kantonsspital St. Gallen. Patients, medical practitioner, nurses and investigators will be blinded. Each patient will self-evaluate his maximal experienced pain eight-hourly during a sequence of 48 hours after completion of surgery.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 140 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description:

The investigators plan to evaluate the analgesic effect of systemic Lidocaine in Addition to general anesthesia during bariatric surgery.

  • Lidocaine group: perioperative application of systemic Lidocaine up to four hours from end of surgical procedures.
  • Control group: perioperative application of Placebo (NaCl 0.9%) up to four hours from end of surgical procedures.
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description: Measures taken to minimize or avoid bias include randomization and blinding of participants after they have given their informed consent. Blinding of medical practitioner and medical personnel will be conducted by provision of equal looking and packing of IMPs, which will be fabricated individually for each patient and on request one to two days before surgery by the pharmacy.
Primary Purpose: Treatment
Official Title: Comparing Analgesic Efficacy of Systemic Lidocaine Against Placebo in General Anesthesia in Bariatric Surgery: Prospective, Randomized, Double-blinded, Placebo Controlled, Mono-Center Study
Actual Study Start Date : November 16, 2018
Actual Primary Completion Date : April 1, 2021
Actual Study Completion Date : April 1, 2021

Resource links provided by the National Library of Medicine


Arm Intervention/treatment
Experimental: Lidocaine Hydrochloride
  • 1.5 mg/kg lean body mass lidocaine (lidocaine 1%) bolus I.V. as general anesthesia steady state concentration is accomplished
  • 1.5 mg/kg lean body mass/h lidocaine I.V. with beginning of surgical procedures
  • after completion of surgery: transfer to PACU, pain evaluation for 48 hours
  • duration of intervention: lidocaine infusion up to four hours from completion of surgery, or till transfer to surgical ward
Drug: Lidocaine Hydrochloride
The intervention to be studied will be the additional application of systemic lidocaine 1% dosed 1.5 ml/kg LBM to general anesthesia in bariatric surgery. Patients, randomly assigned to one study group, will be surveyed for 48 hours after completion of surgery, experienced pain, occurrence of PONV, time to first defecation and length of hospitalization will be monitored. Patients, medical practitioner, nurses and investigators will be blinded by utilization of equal appearance and packing of IMPs, which will be fabricated individually for each patient and on request one to two days before surgery by the pharmacy. Each patient will self-evaluate his maximal experienced pain eight-hourly during a sequence of 48 hours after completion of surgery.
Other Name: Lidocaine Group

Placebo Comparator: Saline Solution
  • 0.15 ml/kg lean body mass saline 0.9% bolus I.V. as general anesthesia steady state concentration is accomplished
  • 0.15 ml/kg lean body mass/h saline 0.9% I.V. with beginning of surgical procedure
  • after completion of surgery: transfer to PACU, pain evaluation for 48 hours
  • duration of intervention: saline infusion up to four hours from completion of surgery, or till transfer to surgical ward
Drug: Saline Solution
The intervention to be studied will be the additional application of NaCl 0.9% dosed 1.5 ml/kg LBM to general anesthesia in bariatric surgery as a placebo. Patients, randomly assigned to one study group, will be surveyed for 48 hours after completion of surgery, experienced pain, occurrence of PONV, time to first defecation and length of hospitalization will be monitored. Each patient will self-evaluate his maximal experienced pain eight-hourly during a sequence of 48 hours after completion of surgery.
Other Name: Placebo Group




Primary Outcome Measures :
  1. Postoperative VAS/NRS Score [ Time Frame: 0 - 4 hours after surgery ]
    Any development of VAS/NRS score > 3 (Visual Analog Scale/Numeric Rating Scale ranging from minimum 0 to maximum 10 points, with 0 points as "no pain" to 10 points as "severe pain") , in hourly measurements within the first four hours after completion of bariatric surgery to evaluate the pain experienced by patients after the surgical intervention


Secondary Outcome Measures :
  1. Average experienced maximal pain during the first four hours and 48 hours after Surgery [ Time Frame: 0 - 48 hours after surgery ]
    Average experienced maximal pain during the first four hours and 48 hours (in hourly measurements on post anesthesia care unit (PACU) and in eight-hourly measurements on surgical ward) is assessed by VAS/NRS score (Visual Analog Scale/Numeric Rating Scale ranging from minimum 0 to maximum 10 points, with 0 points as "no pain" to 10 points as "severe pain").

  2. Occurence of Postoperative Nausea and Vomiting after Surgery [ Time Frame: 0 - 48 hours after surgery ]
    Any event of postoperative nausea and vomiting (PONV) (subdivided by event of no nausea (PONV = 0), event of nausea without vomiting (PONV = 1) and event of nausea with vomiting (PONV = 2)) during first 48 hours after completion of surgery

  3. Time to first Defecation [ Time Frame: 0 - 48 hours after surgery ]
    Time to first defecation (quantified in hours)

  4. Duration of Hospitalization [ Time Frame: 0 - 48 hours after surgery ]
    Duration of hospitalization (quantified in days)

  5. Total Amount of Opiate Consumption [ Time Frame: 0 - 48 hours after surgery ]
    The total amount of opiates (given during surgery and on PACU and administrated by nurse controlled analgesia on surgical ward)



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Ages Eligible for Study:   18 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • elective laparoscopic bariatric surgery
  • ASA classification I - III
  • age 18 - 80
  • given informed consent

Exclusion Criteria:

  • no written consent
  • allergy to the investigational product
  • cardiac arrhythmia (pacemaker)
  • liver dysfunction (Child-Pugh classification A, B or C)
  • pregnancy
  • central nervous disease
  • chronic pain and pre-existing opiate prescription
  • expected non-compliance
  • drug/alcohol abuse

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03667001


Locations
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Switzerland
Cantonal Hospital of St. Gallen
St. Gallen, Switzerland, 9007
Sponsors and Collaborators
Miodrag Filipovic, Prof. Dr. med.
Investigators
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Principal Investigator: Miodrag Filipovic, Prof.Dr.med. Deputy Head of the Clinic for Anesthesiology & Intensive Care
  Study Documents (Full-Text)

Documents provided by Miodrag Filipovic, Prof. Dr. med., Cantonal Hospital of St. Gallen:
Publications:

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Responsible Party: Miodrag Filipovic, Prof. Dr. med., Deputy Head of the Clinic for Anesthesiology and Intensive Care, Cantonal Hospital of St. Gallen
ClinicalTrials.gov Identifier: NCT03667001    
Other Study ID Numbers: CTU 17/026
First Posted: September 12, 2018    Key Record Dates
Last Update Posted: July 28, 2021
Last Verified: July 2021

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Miodrag Filipovic, Prof. Dr. med., Cantonal Hospital of St. Gallen:
systemic lidocain
Additional relevant MeSH terms:
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Pain, Postoperative
Postoperative Complications
Pathologic Processes
Pain
Neurologic Manifestations
Lidocaine
Anesthetics, Local
Anesthetics
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Anti-Arrhythmia Agents
Voltage-Gated Sodium Channel Blockers
Sodium Channel Blockers
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action