Pain Control After Orthognathic Surgery (PCOGS)

September 4, 2011 updated by: Chang Gung Memorial Hospital

Intra-operative Trigeminal Nerve Block For Post-operative Pain Control After Orthognathic Surgery

This study will assess the efficacy and safety of levobupivacaine for postoperative pain control in patients received orthognathic surgery. In this split-mouth study, each side will be randomized to receive 1) 5ml 0.5% levobupivacine, 2) 2.5ml 0.5% levobupivacaine, or 3) placebo. One shot of these agents will be delivered by nerve block to maxillary and mandibular branches of trigeminal nerve before the incision was made. The degree of postoperative pain will be evaluated daily by visual analog scale for up to 3 days. The anticipated time on study is 1 year, and the target sample size is 40 individuals.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Design of intervention vs. control Intra-operative injective of (chirocaine) before incision Location of injection: inferior alveolar nerve proximal to its entrance to ramus of mandible, maxillary nerve around pterygopalatine ganglion Amount of injection on each injection site: (1) Experimental group 1: 5mg/ml chirocaine 5cc (2)Experimental group 2: 5mg/ml chirocaine 2.5cc (3)Control group: normal saline 5cc. There are totally 4 injection sites for two jaw surgery and 2 injection sites for one jaw surgery. The experimental site and control site will be determined randomly before injection.

Outcome measurement

  • Primary: effectiveness of intra-operative nerve block on post-operative pain control

  • Secondary:

    1. whether the pain relieve effect is dose-related
    2. how long will this effect last

The intensity of post-operative pain will be measured by VAS, visual analog scale)daily until patients are discharged.

Report adverse outcome:

  • Intolerable pain on control group
  • Adverse reaction to local anesthetic agent
  • Injection-related complications (puncture of major vessels, hematoma on -injection site, etc.)

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Taiwan
      • Taipei, Taiwan, 10507
        • Recruiting
        • Chang Gung Memorial Hospital
        • Contact:
        • Principal Investigator:
          • Yi-Chieh Chen, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

20 years to 40 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • all patients who will receive orthognathic surgery (one jaw or two jaw, with or without genioplasty) in Chang Gung Memorial Hospital since July 2011

Exclusion Criteria:

  • more complex (2- or more piece LeFort I osteotomy, combined gonial resection in BSSO, etc.) or less complex (only Wassmund and/or Kole osteotomies in upper or lower jaw) orthognathic procedures
  • unexpected fracture (unilateral)
  • intra-operative nerve injuries
  • significant facial asymmetry which demands different procedures (location of osteotomy, extension of muscle stripping, etc.)
  • cleft patient, post-traumatic patients, patients with craniofacial syndromes or other neurological or systemic problems which might interfere pain evaluation post-operatively

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 5ml 5% levobupivacaine
5ml 5% levobupivacaine to both maxillary and mandibular branches of trigeminal nerve on experimental side. (total 10ml)
Procedure: Trigeminal nerve block
5ml of long-effective local analgesics (5% levobupivacaine) will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • 5ml Chirocaine
Procedure: Trigeminal nerve block
2.5ml of long-effective local analgesics (5% levobupivacaine) will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • 2.5ml Chirocaine
Procedure: Trigeminal nerve block
5ml Normal saline will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • Placebo
Placebo Comparator: 5ml normal saline
5ml for maxillary and mandibular branches of trigeminal nerve (total 10ml on controlled side)
Procedure: Trigeminal nerve block
5ml of long-effective local analgesics (5% levobupivacaine) will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • 5ml Chirocaine
Procedure: Trigeminal nerve block
2.5ml of long-effective local analgesics (5% levobupivacaine) will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • 2.5ml Chirocaine
Procedure: Trigeminal nerve block
5ml Normal saline will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • Placebo
Experimental: 2.5ml 5% levobupivacaine
2.5ml 5% levobupivacaine to both maxillary and mandibular branches of trigeminal nerve on experimental side. (total 10ml)
Procedure: Trigeminal nerve block
5ml of long-effective local analgesics (5% levobupivacaine) will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • 5ml Chirocaine
Procedure: Trigeminal nerve block
2.5ml of long-effective local analgesics (5% levobupivacaine) will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • 2.5ml Chirocaine
Procedure: Trigeminal nerve block
5ml Normal saline will be delivered to maxillary and mandibular branches of trigeminal nerve.
Other Names:
  • Placebo

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Postoperative pain
Time Frame: participants will be followed for the duration of hospital stay, an expected average of 3days
The degree of pain will be measured daily by visual analog scale.
participants will be followed for the duration of hospital stay, an expected average of 3days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Effective duration of levobupivacaine nerve block
Time Frame: participants will be followed for the duration of hospital stay, an expected average of 3 days
participants will be followed for the duration of hospital stay, an expected average of 3 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Chang Gung Memorial Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Yi-Chieh Chen, MD, Chang Gung Memorial Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 1, 2011

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2012

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2012

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 12, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 15, 2011

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 17, 2011

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 7, 2011

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 4, 2011

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2011

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 100-0548A3

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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