PainPhase 4NCT05165303
Minimal Effective Concentration of Lidocaine in Propofol Lidocaine Mixture for Relief of Pain on Propofol Injection
A Phase 4 study testing lidocaine with propofol in people with Pain, run by Imam Abdulrahman Bin Faisal University.
Trial summary
The research will be carried out in order to determine the optimal lidocaine concentration in propofol lidocaine mixture to prevent pain on propofol injection during induction of general anesthesia using a modified Dixon's up-and-down method. Read more about this study
- Who is it for?
- Ages 18 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Pain
- What is being tested?
- lidocaine with propofol
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- No sites listed yet
- Study dates
- 1 Mar 2022to 30 Jul 2022
- Phase
- Phase 4
- 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 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- ASA I \&II
- Age 18 - 60 years
Who cannot join
- study drug allergy
- hepatic or renal impairment
- cardiac problem
- neurologic deficits
- psychiatric disorders
Trial locations and contacts
No sites are listed yet.
About this study
The research will be carried out in order to determine the optimal lidocaine concentration in propofol lidocaine mixture to prevent pain on propofol injection during induction of general anesthesia using a modified Dixon's up-and-down method. We hypothesized that focusing on lidocaine concentration and not dose could be more convenient and valuable to alleviate pain with propofol injection.
Patients \& methods include assessment of severity of pain on propofol injection using nine concentrations of lidocaine in lidocaine propofol mixture in ASA I\&II patients aged 16-60 years with excluxion of patients with history of drug allergy, hepatic or renal impairment, cardiac problems, neurologic deficits or psychiatric disorders.
Demographic data, type and duration of surgery, Time for unconsciousness, volume of propofol-lidocaine mixture used, pain scale during injection, increase in heart rate and/or hand or forearm withdrawal during injection will be recorded and patient satisfaction (will be assessed in the recovery room after regaining consciousness),
Read the detailed description
The research will be carried out in order to determine the optimal lidocaine concentration in propofol lidocaine mixture to prevent pain on propofol injection during induction of general anesthesia using a modified Dixon's up-and-down method. We hypothesized that focusing on lidocaine concentration and not dose could be more convenient and valuable to alleviate pain with propofol injection.
Patients \& methods include assessment of severity of pain on propofol injection using nine concentrations of lidocaine in in lidocaine propofol mixture in ASA I\&II patients aged 18-60 years with exclusion of patients with history of drug allergy, hepatic or renal impairment, cardiac problems, neurologic deficits or psychiatric disorders.
Demographic data, type and duration of surgery, Time for unconsciousness, volume of propofol-lidocaine mixture used, pain scale during injection, increase in heart rate and/or hand or forearm withdrawal during injection, patient satisfaction (will be assessed in the recovery room after regaining consciousness),
- Conditions
- Pain
- Being tested
- lidocaine with propofol
- Medical subject headings
- Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
lidocaine with propofolDrug
different concentrations of lidocaine added to propofol varying from
| Study group | Role | What they receive |
|---|---|---|
| lidocaine with propofol | Experimental | Not described Receives: Drug: lidocaine with propofol |
What is being measured
The primary outcome is the main question the study is designed to answer.
propofol injection pain
burning pain felt by the participant during injection of propofol according to pain scale including mild, moderate and severe pain degrees
Measured: during injection untill patient start loosing conciousness
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Dec 2021
- Study start1 Mar 2022 (estimated)
- Primary completion28 Jun 2022 (estimated)
- Study completion30 Jul 2022 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for PainStudies of the same condition, open and under way.
- 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 4
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- clinical trial with a single arm
- Masking
- None (open label)
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Imam Abdulrahman Bin Faisal University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hitham Mohammed Aly Elsayed, Imam Abdulrahman Bin Faisal University
- Investigators
- Alaa Mohammed, MD, Study director, King Fahd university hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05165303
- Sponsor's protocol ID
- IRB-2020-331-KFUH
- Status last verified
- Dec 2021
- First submitted
- 16 Oct 2021
- Last updated
- 21 Dec 2021
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Dec 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Minimal Effective Concentration of Lidocaine in Propofol Lidocaine Mixture for Relief of Pain on Propofol Injection
- ClinicalTrials.gov ID
- NCT05165303
- Acronym / sponsor ID
- IRB-2020-331-KFUH
- Conditions
- Pain
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Imam Abdulrahman Bin Faisal UniversityUniversity, hospital or other
- Study start
- 1 Mar 2022 (estimated)
- Primary completion
- 28 Jun 2022 (estimated)
- Study completion
- 30 Jul 2022 (estimated)
- First posted
- 21 Dec 2021 (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.
The research will be carried out in order to determine the optimal lidocaine concentration in propofol lidocaine mixture to prevent pain on propofol injection during induction of general anesthesia using a modified Dixon's up-and-down method. We hypothesized that focusing on lidocaine concentration and not dose could be more convenient and valuable to alleviate pain with propofol injection.
Patients \& methods include assessment of severity of pain on propofol injection using nine concentrations of lidocaine in lidocaine propofol mixture in ASA I\&II patients aged 16-60 years with excluxion of patients with history of drug allergy, hepatic or renal impairment, cardiac problems, neurologic deficits or psychiatric disorders.
Demographic data, type and duration of surgery, Time for unconsciousness, volume of propofol-lidocaine mixture used, pain scale during injection, increase in heart rate and/or hand or forearm withdrawal during injection will be recorded and patient satisfaction (will be assessed in the recovery room after regaining consciousness),
Detailed description
The research will be carried out in order to determine the optimal lidocaine concentration in propofol lidocaine mixture to prevent pain on propofol injection during induction of general anesthesia using a modified Dixon's up-and-down method. We hypothesized that focusing on lidocaine concentration and not dose could be more convenient and valuable to alleviate pain with propofol injection.
Patients \& methods include assessment of severity of pain on propofol injection using nine concentrations of lidocaine in in lidocaine propofol mixture in ASA I\&II patients aged 18-60 years with exclusion of patients with history of drug allergy, hepatic or renal impairment, cardiac problems, neurologic deficits or psychiatric disorders.
Demographic data, type and duration of surgery, Time for unconsciousness, volume of propofol-lidocaine mixture used, pain scale during injection, increase in heart rate and/or hand or forearm withdrawal during injection, patient satisfaction (will be assessed in the recovery room after regaining consciousness),
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- clinical trial with a single arm
| Arm | Type | Receives |
|---|---|---|
| lidocaine with propofol | Experimental | Drug: lidocaine with propofol |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- ASA I \&II
- Age 18 - 60 years
Key exclusion criteria (5 listed)
- study drug allergy
- hepatic or renal impairment
- cardiac problem
- neurologic deficits
- psychiatric disorders
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 |
|---|---|---|
| lidocaine with propofoldifferent concentrations of lidocaine added to propofol varying from | Drug | lidocaine with propofol |
Primary outcome
propofol injection pain
Time frame: during injection untill patient start loosing conciousness
burning pain felt by the participant during injection of propofol according to pain scale including mild, moderate and severe pain degrees
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Dec 2021.
- Individual participant dataSharing planned: No
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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.
Alaa Mohammed, MD study director
King Fahd university hospital
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing lidocaine with propofol in people with Pain, run by Imam Abdulrahman Bin Faisal 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 2 inclusion and 5 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: status not confirmed, as of the sponsor's last update on 21 Dec 2021. 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.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Roshdi Youssef, MD (+966502893485, metwalli@yahoo.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
propofol injection pain (time frame: during injection untill patient start loosing conciousness). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 21 Dec 2021; AzTrials last refreshed its copy on 8 Nov 2026.