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Heart FailureNCT00770107

Thiamine Supplementation to Improve Cardiac Function in Patients With Congestive Heart Failure

A study testing Thiamine in people with Heart Failure, run by Luzerner Kantonsspital at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Working Hypothesis: a treatment with thiamine improves functional status and heart function of patients with congestive heart failure when on a diuretic treatment. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Heart Failure
What is being tested?
Thiamine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
12 participants
Where
1 siteSwitzerland
Study dates
Jun 2004to Dec 2009
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients with stable congestive heart failure on a prescription for diuretic drugs

Who cannot join

  • Acute heart failure
  • Foreseeable need for further changes in medication
  • Current medication containing vitamins
  • Patients with a creatinine above 250 μmol/l

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • Kantonsspital Luzern

    Lucerne, Canton of Lucerne, 6000

Other trials in Switzerland

About this study

Official title: Thiamine Supplementation to Improve Cardiac Function in Patients With Congestive Heart Failure on Long-term Treatment With Diuretic Drugs

Working Hypothesis: a treatment with thiamine improves functional status and heart function of patients with congestive heart failure when on a diuretic treatment.

Read the detailed description

In the treatment of congestive heart failure, diuretic drugs have become a firm cornerstone of therapy. Up to 50% of patients with congestive heart failure in industrialized nations will undergo long-term diuretic treatment. Diuretic therapy is associated with a loss of water soluble vitamins, including vitamin B1 (thiamine). Electrolyte dysbalance, a major side effect of diuretic therapy, has been extensively studied. In sharp contrast, only few data are available about the effects of vitamin loss and in particular of thiamine in this setting. Available data suggest that a diuretic treatment is associated with an increased risk for thiamine deficiency. Thiamine plays a crucial role for normal cardiac function, since severe thiamine deficiency leads to congestive heart failure (wet beriberi). Consequently, patients undergoing diuretic treatment might have compromised heart function. Supplementation of thiamine has been reported to improve cardiac function in patients with congestive heart failure on long-term treatment with diuretic drugs. However, no efforts have been made to confirm those preliminary observations by a placebo-controlled, double-blind study.

Conditions
Heart Failure
Being tested
Thiamine, Placebo
Medical subject headings
Heart Failure

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ThiamineDrug

    Supplementation of thiamine (vitamin b1) 300 mg per day, once daily, for a duration of 4 weeks

  • PlaceboDrug

    Placebo, once daily, for a duration of 4 weeks

Study groups in NCT00770107
Study groupRoleWhat they receive
ThiamineActive comparatorNot described
Receives: Drug: Thiamine
PlaceboPlacebo comparatorNot described
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Left ventricular ejection fraction

    Measured: One day, one week, two weeks, four weeks

Secondary outcomes (2)
  1. Quality of life

    Measured: One day, one week, two week, four weeks

  2. 6-minutes walking test

    Measured: One day, one week, two weeks, four weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Oct 2008 (estimated)
  2. Study startJun 2004
  3. Primary completionDec 2009
  4. Study completionDec 2009

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
12 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00770107
Sponsor's protocol ID
Thiamine in Heart Failure
Status last verified
Jun 2011
First submitted
3 Oct 2008
Last updated
27 Jun 2011
Results posted
No

Publications

  • Schoenenberger AW, Schoenenberger-Berzins R, der Maur CA, Suter PM, Vergopoulos A, Erne P. Thiamine supplementation in symptomatic chronic heart failure: a randomized, double-blind, placebo-controlled, cross-over pilot study. Clin Res Cardiol. 2012 Mar;101(3):159-64. doi: 10.1007/s00392-011-0376-2. Epub 2011 Nov 5.

    PubMed 22057652

Questions about this trial

What is this clinical trial studying?

A study testing Thiamine in people with Heart Failure, run by Luzerner Kantonsspital at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Jun 2011. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Left ventricular ejection fraction (time frame: One day, one week, two weeks, four weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00770107, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jun 2011.

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