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

September 6, 2012 updated by: 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).

Study Overview

Status

Status

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

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.

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 (Actual)

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.
  • Phase 4

Contacts and Locations

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

Study Locations

  • Austria
      • Vienna, Austria, 1090
        • Medical University of Vienna

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

55 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

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

Exclusion Criteria:

  • metabolic acidosis

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: Basic Science
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

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.
Placebo Comparator: Placebo
NaCl 0.9% intravenously for 24 hours after induction of anaesthesia
Dietary supplement: Placebo
NaCl 0.9% intravenously for 24h
Active Comparator: Arginine
L-arginine-hydrochlorid (0.35 g/kg body weight) intravenously for 24 hours after induction of anaesthesia
Dietary supplement: Arginine
L-arginine-hydrochlorid (0.35 g/kg body weight) intravenously for 24 hours

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
Change from baseline in temperature gradient at 3h post-surgery
Time Frame: 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

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
Measure Description
Time Frame
Change from baseline in Laser Doppler blood perfusion imaging at 1h
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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
Time Frame: 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

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.
Medical Scientific Fund of the Mayor of Vienna

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

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.
January 1, 2007

Primary Completion (Actual)

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.
December 1, 2008

Study Completion (Actual)

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.
January 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).
September 3, 2012

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.
September 6, 2012

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.
September 11, 2012

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 11, 2012

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 6, 2012

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.
September 1, 2012

More Information

Terms related to this study

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.
  • MUW_Arginin

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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