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The Effect of High Dose Arginine Infusion on Hemodynamic and Peripheral Microcirculation

6. september 2012 opdateret af: Ass.-Prof. DI Dr. Barbara Wessner, Medical Scientific Fund of the Mayor of Vienna

The Effect of High Dose Arginine Infusion on Hemodynamic and Peripheral Microcirculation: a Randomized, Controlled Clinical Trial in Patients Receiving Peripheral Vascular Surgery

The aim of this study was to investigate the effect of a 24- hrs L-arginine infusion on hemodynamic and on parameters of microcirculation in patients with peripheral arterial occlusive disease (PAOD).

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

40

Fase

  • Fase 4

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Østrig
      • Vienna, Østrig, 1090
        • Medical University of Vienna

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

55 år til 75 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • female or male patients receiving peripheral bypass surgery
  • age between 55 and 75 years

Exclusion Criteria:

  • metabolic acidosis

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Placebo komparator: Placebo
NaCl 0.9% intravenously for 24 hours after induction of anaesthesia
Kosttilskud: Placebo
NaCl 0.9% intravenously for 24h
Aktiv komparator: Arginine
L-arginine-hydrochlorid (0.35 g/kg body weight) intravenously for 24 hours after induction of anaesthesia
Kosttilskud: Arginine
L-arginine-hydrochlorid (0.35 g/kg body weight) intravenously for 24 hours

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change from baseline in temperature gradient at 3h post-surgery
Tidsramme: baseline and 3h post-surgery
One temperature probe is attached to the index finger of the lying patients, a second probe at the radial side of the forearm, midway between elbow and the wrist. Temperature gradient is calculated by subtracting the value obtained at the fingertip from the forearm value and expressed in °C.
baseline and 3h post-surgery

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Change from baseline in Laser Doppler blood perfusion imaging at 1h
Tidsramme: baseline & 1h post-surgery
Perfusion values are expressed as arbitrary perfusion units.
baseline & 1h post-surgery
Change from baseline in Laser Doppler blood perfusion imaging at 2h
Tidsramme: baseline & 2h post-surgery
Perfusion values are expressed as arbitrary perfusion units.
baseline & 2h post-surgery
Change from baseline in Laser Doppler blood perfusion imaging at 3h
Tidsramme: baseline & 3h post-surgery
Perfusion values are expressed as arbitrary perfusion units.
baseline & 3h post-surgery
Change from baseline in Laser Doppler blood perfusion imaging at 24h
Tidsramme: baseline & 24h post-surgery
Perfusion values are expressed as arbitrary perfusion units.
baseline & 24h post-surgery
Change from baseline in Laser Doppler blood perfusion imaging at 48h
Tidsramme: baseline & 48h post-surgery
Perfusion values are expressed as arbitrary perfusion units.
baseline & 48h post-surgery
Change from baseline in asymmetric dimethylarginine (ADMA) at 3h
Tidsramme: baseline & 3h post-surgery
Asymmetric dimethylarginine is measured by ELISA and expressed in µmol/l.
baseline & 3h post-surgery
Change from baseline in asymmetric dimethylarginine (ADMA) at 24h
Tidsramme: baseline & 24h post-surgery
Asymmetric dimethylarginine is measured by ELISA and expressed in µmol/l.
baseline & 24h post-surgery
Change from baseline in asymmetric dimethylarginine (ADMA) at 48h
Tidsramme: baseline & 48h post-surgery
Asymmetric dimethylarginine is measured by ELISA and expressed in µmol/l.
baseline & 48h post-surgery
Change from baseline in plasma arginine concentration at 3h
Tidsramme: baseline & 3h post-surgery
L-arginine concentration is measured by HPLC and expressed in µmol/l.
baseline & 3h post-surgery
Change from baseline in plasma arginine concentration at 24h
Tidsramme: baseline & 24h post-surgery
L-arginine concentration is measured by HPLC and expressed in µmol/l.
baseline & 24h post-surgery
Change from baseline in plasma arginine concentration at 48h
Tidsramme: baseline & 48h post-surgery
L-arginine concentration is measured by HPLC and expressed in µmol/l.
baseline & 48h post-surgery
Change from baseline in temperature gradient at 1h
Tidsramme: baseline & 1h post-surgery
One temperature probe is attached to the index finger of the lying patients, a second probe at the radial side of the forearm, midway between elbow and the wrist. Temperature gradient is calculated by subtracting the value obtained at the fingertip from the forearm value and expressed in °C.
baseline & 1h post-surgery
Change from baseline in temperature gradient at 2h
Tidsramme: baseline & 2h post-surgery
One temperature probe is attached to the index finger of the lying patients, a second probe at the radial side of the forearm, midway between elbow and the wrist. Temperature gradient is calculated by subtracting the value obtained at the fingertip from the forearm value and expressed in °C.
baseline & 2h post-surgery
Change from baseline in temperature gradient at 24h
Tidsramme: baseline & 24h post-surgery
One temperature probe is attached to the index finger of the lying patients, a second probe at the radial side of the forearm, midway between elbow and the wrist. Temperature gradient is calculated by subtracting the value obtained at the fingertip from the forearm value and expressed in °C.
baseline & 24h post-surgery
Change from baseline in temperature gradient at 48h
Tidsramme: baseline & 48h post-surgery
One temperature probe is attached to the index finger of the lying patients, a second probe at the radial side of the forearm, midway between elbow and the wrist. Temperature gradient is calculated by subtracting the value obtained at the fingertip from the forearm value and expressed in °C.
baseline & 48h post-surgery

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Medical Scientific Fund of the Mayor of Vienna

Efterforskere

  • Studieleder: Jörg Michael Hiesmayr, Prof. Dr., Medical University of Vienna

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. januar 2007

Primær færdiggørelse (Faktiske)

1. december 2008

Studieafslutning (Faktiske)

1. januar 2012

Datoer for studieregistrering

Først indsendt

3. september 2012

Først indsendt, der opfyldte QC-kriterier

6. september 2012

Først opslået (Skøn)

11. september 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

11. september 2012

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

6. september 2012

Sidst verificeret

1. september 2012

Mere information

Begreber relateret til denne undersøgelse

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • MUW_Arginin

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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