AnesthesiaNCT03386565
Effect of Intraoperative Lidocaine Infusion on Intraoperative Isoflurane Requirements
A study testing sodium chloride solution and Lidocaine in people with Anesthesia, run by Assiut University.
Trial summary
Fifty patients were included in the study, divided into two equal groups (25 in each), underwent spinal fusion surgery.Control group: received normal saline. Lidocaine group: received lidocaine 2.0 mg/kg slowly IV before induction of anesthesia, followed by lidocaine IV infusion at a rate of 2.5 mg/kg/hr until the end… Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Anesthesia
- What is being tested?
- sodium chloride solution and Lidocaine
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 50 participants
- Where
- No sites listed yet
- Study dates
- 2 Oct 2016to 15 Dec 2017
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult patients underwent spinal fusion surgery ASA I, II and III
Who cannot join
- History of epilepsy hearing disorders known allergy to lidocaine BMI > 35 significant cardiac diseases significant renal diseases liver dysfunction substance abuse chronic opioid use
About this study
Official title: Effect of Intraoperative IV Lidocaine Infusion on Intraoperative Isoflurane Requirements
Fifty patients were included in the study, divided into two equal groups (25 in each), underwent spinal fusion surgery.Control group: received normal saline.
Lidocaine group: received lidocaine 2.0 mg/kg slowly IV before induction of anesthesia, followed by lidocaine IV infusion at a rate of 2.5 mg/kg/hr until the end of surgery. We evaluated the end-tidal isoflurane concentration required to maintain AAI index in the range of 20-25 during adult spinal fusion surgery.
Read the detailed description
This prospective, double-blinded, randomized study was carried out in Assiut University Hospitals, after approval by the local research ethics committee of Assiut Faculty of Medicine, Egypt. Informed consent was taken from each patient.
Patients were randomly allocated into two groups of equal size to receive either 0.9% sodium chloride infusion group 1 (CG), or lidocaine infusion group 2 (LG). Randomization was performed using G1 and G2 registers, which was placed in sealed envelopes prior to study initiation and opened prior to anesthesia by a physician who prepared the intravenous solution and identified it with the patient number, according to the envelope drawn. The solution was handed to another physician, blind to the prepared solutions' content, who was responsible for the anesthesia. The solution volume was equal. The responsible investigator was remained blind to the chosen group until the end of the study. G1 patients (n = 25) were received 10 mL of 0.9% sodium chloride slowly IV just before induction of anesthesia, then infused through 50 mL syringe as lidocaine, and G2 patients (n = 25) were received a loading dose of lidocaine 2 mg ̸ kg (maximally 200 mg) slowly IV just before induction of anesthesia, then the lidocaine infusion started immediately after positioning at a rate of 2.5 mg ̸ kg/h until the end of the procedure (50 mL syringe contained 25 mL 2.0% lidocaine i.e., 500 mg lidocaine plus 25 mL normal saline). Both syringes (10 mL for loading dose and 50 mL for maintenance IV infusion) were labelled by the case number and prepared by another anesthesiologist who did not share in anesthesia.
Anesthesia technique: Patients were monitored with continuous electrocardiography, pulse oximetry and intermittent non-invasive blood pressure measurements every 5 min. Capnography, end-tidal isoflurane concentration (Et-Iso) via AVANCE CS2 Datex-Ohmeda, Inc. USA, and auditory evoked potential monitor (AEP monitor 2 Dia Trade medical engineering) also attached to the patient (one AEP electrode was placed on the center of the forehead, one on the temple, and one behind the left ear over the mastoid bone).
General anesthesia was induced by propofol 2.5 mg ̸ kg and cisatracurium 0.15 mg ̸ kg to facilitate endotracheal intubation. Patients were then assigned to two groups by closed-envelope randomization. In both groups, anesthesia was maintained with isoflurane in oxygen/air mixture at sufficient concentration to maintain AAI index in the range 20-25, and mean blood pressure within 25% of the baseline value. All patients were received 60 mg ketorolac (ketolac) slowly IV after induction of anesthesia, and fentanyl 1.5 µg ̸ kg IV before skin incision and 0.5 µg ̸ kg given IV after 45 min. Reversal of residual muscle relaxant was done using neostigmine and atropine at the end of the operation.
Data collection: Demographic and surgical data include: Age, gender, weight, height, duration and type of surgery, in addition to Et-Iso.
- Conditions
- Anesthesia
- Being tested
- sodium chloride solution, Lidocaine
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
sodium chloride solutionDrug
Also called normal saline solution
intraoperative IV infusion
LidocaineDrug
Also called xylocaine
intraoperative IV infusion
| Study group | Role | What they receive |
|---|---|---|
| control group | Active comparator | * Sodium chloride solution 10 mL IV just before induction of anesthesia
* IV infusion during the surgery Receives: Drug: sodium chloride solution |
| lidocaine group | Active comparator | * lidocaine 2 mg ̸ kg slowly IV just before induction of anesthesia
* IV infusion during the surgery Receives: Drug: Lidocaine |
What is being measured
The primary outcome is the main question the study is designed to answer.
effect of intraoperative IV lidocaine infusion on intraoperative end tidal isoflurane concentration
using gas analyzer for determination of end tidal isoflurane concentration (%) (ET-Iso) needed to maintain AAI index in the range 20-25.
Measured: every 15 minutes from induction of anesthesia until 90 minutes intraoperative.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Dec 2017
- Study start2 Oct 2016
- Primary completion2 Oct 2017
- Study completion15 Dec 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for AnesthesiaStudies of the same condition, open and under way.
- More trials run by Assiut UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Care provider
- Enrolment
- 50 participants (actual)
Sponsor and investigators
- Lead sponsor
- Assiut University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mohamed galal aly, Assiut University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03386565
- Sponsor's protocol ID
- 1720147
- Status last verified
- Dec 2017
- First submitted
- 17 Dec 2017
- Last updated
- 29 Dec 2017
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Vesal N, Spadavecchia C, Steiner A, Kirscher F, Levionnois OL. Evaluation of the isoflurane-sparing effects of lidocaine infusion during umbilical surgery in calves. Vet Anaesth Analg. 2011 Sep;38(5):451-60. doi: 10.1111/j.1467-2995.2011.00636.x.
PubMed 21831050Saadawy IM, Kaki AM, Abd El Latif AA, Abd-Elmaksoud AM, Tolba OM. Lidocaine vs. magnesium: effect on analgesia after a laparoscopic cholecystectomy. Acta Anaesthesiol Scand. 2010 May;54(5):549-56. doi: 10.1111/j.1399-6576.2009.02165.x. Epub 2009 Nov 16.
PubMed 19919581
Study at a glance
From the registry record, last updated by the sponsor on 29 Dec 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Intraoperative IV Lidocaine Infusion on Intraoperative Isoflurane Requirements
- ClinicalTrials.gov ID
- NCT03386565
- Acronym / sponsor ID
- 1720147
- Conditions
- Anesthesia
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 50 participants (actual)
- Lead sponsor
- Assiut UniversityUniversity, hospital or other
- Study start
- 2 Oct 2016 (actual)
- Primary completion
- 2 Oct 2017 (actual)
- Study completion
- 15 Dec 2017 (actual)
- First posted
- 29 Dec 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Fifty patients were included in the study, divided into two equal groups (25 in each), underwent spinal fusion surgery.Control group: received normal saline.
Lidocaine group: received lidocaine 2.0 mg/kg slowly IV before induction of anesthesia, followed by lidocaine IV infusion at a rate of 2.5 mg/kg/hr until the end of surgery. We evaluated the end-tidal isoflurane concentration required to maintain AAI index in the range of 20-25 during adult spinal fusion surgery.
Detailed description
This prospective, double-blinded, randomized study was carried out in Assiut University Hospitals, after approval by the local research ethics committee of Assiut Faculty of Medicine, Egypt. Informed consent was taken from each patient.
Patients were randomly allocated into two groups of equal size to receive either 0.9% sodium chloride infusion group 1 (CG), or lidocaine infusion group 2 (LG). Randomization was performed using G1 and G2 registers, which was placed in sealed envelopes prior to study initiation and opened prior to anesthesia by a physician who prepared the intravenous solution and identified it with the patient number, according to the envelope drawn. The solution was handed to another physician, blind to the prepared solutions' content, who was responsible for the anesthesia. The solution volume was equal. The responsible investigator was remained blind to the chosen group until the end of the study. G1 patients (n = 25) were received 10 mL of 0.9% sodium chloride slowly IV just before induction of anesthesia, then infused through 50 mL syringe as lidocaine, and G2 patients (n = 25) were received a loading dose of lidocaine 2 mg ̸ kg (maximally 200 mg) slowly IV just before induction of anesthesia, then the lidocaine infusion started immediately after positioning at a rate of 2.5 mg ̸ kg/h until the end of the procedure (50 mL syringe contained 25 mL 2.0% lidocaine i.e., 500 mg lidocaine plus 25 mL normal saline). Both syringes (10 mL for loading dose and 50 mL for maintenance IV infusion) were labelled by the case number and prepared by another anesthesiologist who did not share in anesthesia.
Anesthesia technique: Patients were monitored with continuous electrocardiography, pulse oximetry and intermittent non-invasive blood pressure measurements every 5 min. Capnography, end-tidal isoflurane concentration (Et-Iso) via AVANCE CS2 Datex-Ohmeda, Inc. USA, and auditory evoked potential monitor (AEP monitor 2 Dia Trade medical engineering) also attached to the patient (one AEP electrode was placed on the center of the forehead, one on the temple, and one behind the left ear over the mastoid bone).
General anesthesia was induced by propofol 2.5 mg ̸ kg and cisatracurium 0.15 mg ̸ kg to facilitate endotracheal intubation. Patients were then assigned to two groups by closed-envelope randomization. In both groups, anesthesia was maintained with isoflurane in oxygen/air mixture at sufficient concentration to maintain AAI index in the range 20-25, and mean blood pressure within 25% of the baseline value. All patients were received 60 mg ketorolac (ketolac) slowly IV after induction of anesthesia, and fentanyl 1.5 µg ̸ kg IV before skin incision and 0.5 µg ̸ kg given IV after 45 min. Reversal of residual muscle relaxant was done using neostigmine and atropine at the end of the operation.
Data collection: Demographic and surgical data include: Age, gender, weight, height, duration and type of surgery, in addition to Et-Iso.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, care provider)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| control group | Active comparator | Drug: sodium chloride solution* Sodium chloride solution 10 mL IV just before induction of anesthesia * IV infusion during the surgery |
| lidocaine group | Active comparator | Drug: Lidocaine* lidocaine 2 mg ̸ kg slowly IV just before induction of anesthesia * IV infusion during the surgery |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Adult patients underwent spinal fusion surgery ASA I, II and III
Key exclusion criteria (1 listed)
- History of epilepsy hearing disorders known allergy to lidocaine BMI > 35 significant cardiac diseases significant renal diseases liver dysfunction substance abuse chronic opioid use
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| sodium chloride solutionAlso: normal saline solutionintraoperative IV infusion | Drug | control group |
| LidocaineAlso: xylocaineintraoperative IV infusion | Drug | lidocaine group |
Primary outcome
effect of intraoperative IV lidocaine infusion on intraoperative end tidal isoflurane concentration
Time frame: every 15 minutes from induction of anesthesia until 90 minutes intraoperative.
using gas analyzer for determination of end tidal isoflurane concentration (%) (ET-Iso) needed to maintain AAI index in the range 20-25.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Dec 2017.
- Background: PubMed 21831050Vesal N, Spadavecchia C, Steiner A, Kirscher F, Levionnois OL. Evaluation of the isoflurane-sparing effects of lidocaine infusion during umbilical surgery in calves. Vet Anaesth Analg. 2011 Sep;38(5):451-60. doi: 10.1111/j.1467-2995.2011.00636.x.
- Background: PubMed 19919581Saadawy IM, Kaki AM, Abd El Latif AA, Abd-Elmaksoud AM, Tolba OM. Lidocaine vs. magnesium: effect on analgesia after a laparoscopic cholecystectomy. Acta Anaesthesiol Scand. 2010 May;54(5):549-56. doi: 10.1111/j.1399-6576.2009.02165.x. Epub 2009 Nov 16.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A study testing sodium chloride solution and Lidocaine in people with Anesthesia, run by Assiut University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 29 Dec 2017. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
effect of intraoperative IV lidocaine infusion on intraoperative end tidal isoflurane concentration (time frame: every 15 minutes from induction of anesthesia until 90 minutes intraoperative.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03386565, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 Dec 2017.