- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00657358
The Effect of Intravenous Lidocaine on Normal Sensation and Pain in Healthy Volunteers
11. april 2017 opdateret af: Michael Froelich, University of Alabama at Birmingham
The Effect of Intravenous Lidocaine on Normal Sensation and Pain in Healthy Volunteers (Carl Koller Grant) (The Effect of Intravenous Lidocaine on Allodynia)
The purpose of this study is to study if lidocaine, given intravenously, reduces pain.
Studieoversigt
Detaljeret beskrivelse
Clinicians use lidocaine intravenously in a fashion that suggests that it might have analgesic effects.
Therefore, we test the hypothesis that lidocaine reduces pain intensity in response to experimental pain.
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
22
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Alabama
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Birmingham, Alabama, Forenede Stater, 35233
- University of Alabama at Birmingham
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
19 år og ældre (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ja
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
- Healthy Adult Volunteers, age >19 years
Exclusion Criteria:
- History of Substance Abuse
- Coronary Artery Disease (CAD): unstable
- Congestive Heart Failure (CHF): unstable
- Heart Arrhythmia: symptomatic
- Chronic Obstructive Pulmonary Disease (COPD)
- Lidocaine Allergy
- Diagnostic and Statistical Manual of Mental Disorders (Rev IV): Axis I: Common Axis I disorders include depression, anxiety disorders,bipolar disorder, ADHD, and schizophrenia. Axis II: borderline personality disorder, schizotypal personality disorder, antisocial personality disorder, and mild mental retardation.
- Presence of Contraindications for MRI
- Presence of electronically, magnetically, and mechanically activated implants
- Electronically, magnetically, and mechanically activated implants
- Ferromagnetic or electronically operated active devices like automatic cardioverter defibrillators
- Cardiac pacemakers
- Metallic splinters in the eye
- Ferromagnetic haemostatic clips in the central nervous system (CNS)
- Claustrophobia
- Pregnancy
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
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Eksperimentel: Lidocaine
Lidocaine 2% (2mg/ml) was administered via a computer assisted infusion to achieve a target plasma concentration of 2 mcg/ml; infused within 20 minutes.
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Lidocaine 2% (2mg/ml) was administered via a computer assisted infusion to achieve a target plasma concentration of 2 mcg/ml; infused within 20 minutes.
Andre navne:
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
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Ischemic Pain
Tidsramme: baseline, during 20 minute lidocaine infusion, and 30 minutes after discontinuation of lidocaine infusion
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The right arm was exsanguinated by elevating it above heart level for 30 seconds, after which the arm was occluded with a standard blood pressure cuff positioned proximal to the elbow inflated to twice the participant's mean arterial pressure.
Participants then performed 20 handgrip exercises of 2-second duration at 4-second intervals at 50% of their maximum grip strength.
Pain was rated on a scale from 0 - 10 with 0 being no pain to 10 being the worst pain imaginable.
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baseline, during 20 minute lidocaine infusion, and 30 minutes after discontinuation of lidocaine infusion
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Electrical Pain
Tidsramme: Baseline, during 20 minutes lidocaine infusion, and 30 minutes after completion of lidocaine infusion
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Peripheral nerve stimulation electrodes were attached to the base and the tip of the third digit and connected to a constant current stimulator (DS7A, Digitimer Ltd, Hertfordshire, England).
Ascending electrical stimuli of 2000 mu duration, ranging from 0.5 to 35 mA (ampere) was administered one per second in 0.5 mA increments.
Participants were instructed to indicate when they first felt the slightest sense of pain (electrical pain threshold, EPTh) and when they were unable to tolerate a further increase (electrical pain tolerance, EPTo).
For each measure, the average of three trials was computed for use in subsequent analyses.
Each of the three electrical pain stimuli were presented three times and balanced in order using a Graeco-Latin square design.
The pain scale is between 0 and 10, with 0 being no pain and 10 being the worst pain imaginable
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Baseline, during 20 minutes lidocaine infusion, and 30 minutes after completion of lidocaine infusion
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Heat Pain
Tidsramme: baseline, during 20 minute lidocaine infusion, and 30 minutes after completion of lidocaine infusion
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The thermal procedure involved a baseline assessment of heat pain threshold and tolerance.
Contact heat stimuli were delivered using a computer-controlled Medoc Thermal Sensory Analyzer (TSA-II; Ramat Yishai, Israel), which is a peltier elementbased stimulator.
Temperature levels were monitored by a thermistor and returned to a preset baseline of 32°C by active cooling at a rate of 10°C/s.
The 3 × 3 cm contact probe was applied to the right forearm.
The pain scale is between 0 and 10 with 1 being no pain and 10 being the worst pain imaginable
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baseline, during 20 minute lidocaine infusion, and 30 minutes after completion of lidocaine infusion
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Cold Pain
Tidsramme: baseline, during 20 minute infusion, and 30 minutes after lidocaine infusion
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The participant's foot was immersed up to the ankle into a container filled with ice water of 3°C.
Participants were instructed to maintain their foot in the container until the cold pain became intolerable (cold pain tolerance).
The length of time was recorded in seconds.
This procedure was repeated once with a gap of at least fifteen minutes in-between repeated tests.
The range was 0 seconds to 120 seconds
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baseline, during 20 minute infusion, and 30 minutes after lidocaine infusion
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Tactile Sensation
Tidsramme: baseline, during 20 minute infusion, and 30 minutes after completion of infusion
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Pin prick sensory thresholds (PPT) were obtained by touching the skin in-between the first and second metacarpal bone with a 23-gauge needles which moved freely out of a 10 mL plastic syringe barrel.
The pin prick sensation was modified by adding small weights to the 23-gauge needles (from 0.2 to 5.2 mg).
A syringe barrel of tuberculin (TB) needles that were cut to different lengths to add the desired weight to the 23-gauge needle.
The PPT was determined using the weighted 23-gauge needle in ascending order, according to the method of limits.
This assessment was to evaluate whether participants were able to feel the touch of the needle.
The participant's arm was placed on a tray table.
A linen sheet was suspended in-between two IV poles in such a fashion that the subject's view of his/her hand was blocked.
Normal values are between 0.21mg and 5mg.
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baseline, during 20 minute infusion, and 30 minutes after completion of infusion
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Michael Froelich, MD, University of Alabama at Birmingham
Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart
1. april 2008
Primær færdiggørelse (Faktiske)
1. januar 2012
Studieafslutning (Faktiske)
1. januar 2012
Datoer for studieregistrering
Først indsendt
9. april 2008
Først indsendt, der opfyldte QC-kriterier
11. april 2008
Først opslået (Skøn)
14. april 2008
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
17. maj 2017
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
11. april 2017
Sidst verificeret
1. april 2017
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Lægemidlers fysiologiske virkninger
- Molekylære mekanismer for farmakologisk virkning
- Anti-arytmimidler
- Depressive midler til centralnervesystemet
- Agenter fra det perifere nervesystem
- Sensoriske systemagenter
- Bedøvelsesmidler
- Membrantransportmodulatorer
- Bedøvelsesmidler, lokale
- Spændingsstyret natriumkanalblokkere
- Natriumkanalblokkere
- Lidokain
Andre undersøgelses-id-numre
- F061204013
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .
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