Effect of IV Lidocaine Infusions on Pain
This study has been completed.
Information provided by (Responsible Party):
Sean Mackey, Stanford University
First received: July 28, 2008
Last updated: June 21, 2012
Last verified: June 2012
Our goals for this study involve using intravenous lidocaine as it is normally used in the Stanford Pain Management Center to assess the effect of intravenous lidocaine on chronic pain. Studies have been done determining the efficacy of intravenous lidocaine for treating pain but little research has been done to determine the effects of an intravenous lidocaine infusion on the different components of the pain experience. Our study will incorporate psychophysical and behavioral testing both before and during the infusions of lidocaine to determine changes in mood. In addition, we will use functional magnetic resonance imaging to observe what changes occur in the brain during a lidocaine infusion.
Drug: Intravenous lidocaine
Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
||Effect of IV Lidocaine Infusions on Pain
Primary Outcome Measures:
- Blood Oxygenation Level Dependent (BOLD) signal in insular cortex, prefrontal cortex, rostroventral medulla, ventral tegmental area, and caudate nucleus [ Time Frame: Duration of the 2 hour fMRI scan ] [ Designated as safety issue: No ]
| Study Start Date:
| Study Completion Date:
| Primary Completion Date:
||January 2011 (Final data collection date for primary outcome measure)
Each patient will receive an intravenous infusion of lidocaine. Drug will be infused using a computer-controlled paradigm. This paradigm allows increasing plasma concentrations in a step-wise manner, keeping the concentration during each infusion step constant. Plasma concentrations will be increased gradually from 0 to 5 ug/ml in a method at the discretion of the medical team. This will be conducted according to standard medical practice for the infusion and the study procedures will not affect the infusion paradigm. Total infusion time is approximately 1-2 hours.
|Ages Eligible for Study:
||18 Years and older
|Genders Eligible for Study:
|Accepts Healthy Volunteers:
Inclusion Criteria:- subjects between the ages of 18 and 100 years for clinical component; subjects between the ages of 18 and 70 for the MRI component
- meets the study criteria of chronic pain of either peripheral or central origin
- male or a non-pregnant, non-lactating female. If females are of reproductive potential (i.e., not surgically sterilized and/or not post menopausal), they must be practicing an accepted method of birth control, agree to a urine pregnancy test at the start of each study session (for patient scheduled through the clinic, this has already been addressed by the recommending physician)
- is not currently on a sodium channel blocking agent, anticonvulsant, or tricyclic antidepressant,
- must be able to comply with any other study requirements and complete experimental tasks
- have no reported substance abuse within the past six months;
Exclusion Criteria:- subject is lactating or pregnant;
- subject suffers from clinically significant cardiac, pulmonary, renal or liver disease;
- subject allergic to lidocaine.
- MRI Component: any metal objects (especially surgical clips), devices, or implants or any other MRI contraindication
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00725504
|Stanford University School of Medicine
|Stanford, California, United States, 94305 |
No publications provided
||Sean Mackey, Assistant Professor, Stanford University
History of Changes
|Other Study ID Numbers:
|Study First Received:
||July 28, 2008
||June 21, 2012
||United States: Institutional Review Board
Additional relevant MeSH terms:
ClinicalTrials.gov processed this record on July 20, 2014
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Central Nervous System Agents