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Pilot Study of Vitamin D Supplementation in Heart Failure

18. juni 2015 opdateret af: Liz, Fraser Health

A Randomized, Double-Blind, Placebo-Controlled Trial of Vitamin D in Heart Failure: A Pilot Study

The purpose of this study is to determine if the methods are feasible for a larger clinical trial.The study will examine the relationship between vitamin D status, quality of life, pain and walking distance of individuals living with heart failure.

Studieoversigt

Status

Afsluttet

Betingelser

Detaljeret beskrivelse

This study is being conducted as a pilot project to determine the feasibility of the methods to inform the conduct of a future larger study. This double-blind randomized controlled trial will examine the relationship between vitamin D status, Quality of Life (QOL), pain and functional capacity of individuals living with heart failure (HF) pre and post vitamin D supplementation. The study outcome measures include: the rate of recruitment, retention and compliance with the study procedures. Quality of life will be measured by the EQ-5D™ questionnaire; the Brief Pain Inventory (BPI) will be used to evaluate subject pain. The 6-minute walk test (6MWT) will evaluate functional capacity. Serum 25-hydroxyvitamin D (25OHD) levels will quantify the adequacy of vitamin D dosing to achieve target 25OHD levels.

A convenience sample of 40 subjects (20 per treatment group) will be prospectively recruited from the Royal Columbian Hospital (RCH) Heart Function (HFx) Clinic. Subjects will be randomized to receive either vitamin D3 (cholecalciferol) or a matching placebo at a dose of 20,000 IU daily for 30 days followed by 20,000 IU once weekly for 8 weeks. Subjects will have their 25OHD levels measured, self-administer the EQ-5D™ and BPI questionnaires and perform the 6MWT at the study entry and again at the completion of the study (12 weeks after entry).

Descriptive statistics (mean, standard deviation and proportion as appropriate) will be used to describe the data. The feasibility of all study procedures will be reported by percentage and compared to the standard set by the team of 80%.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

13

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

    • British Columbia
      • New Westminster, British Columbia, Canada, V3L 3W7
        • Royal Columbian Hospital

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

65 år og ældre (Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • 65 years of age or older
  • New York Heart Association functional Class II or III symptoms
  • Ability to communicate in English or through a translator
  • Competent to sign the informed consent

Exclusion Criteria:

  • Co-morbidity that would negatively impact quality of life (e.g. severe arthritis, or fibromyalgia)
  • Co-morbidity that would negatively impact vitamin D metabolism (glomerular filtration rate-15-29%, significant liver dysfunction
  • On a pharmaceutical agent that could lower Vitamin D levels (e.g. glucocorticoids, anticonvulsants)
  • Taking >600 IU vitamin D (cholecalciferol or ergocalciferol) daily
  • Moderate or severe cognitive impairment
  • Contraindication to vitamin D supplementation: history of hypercalcemia or conditions that increase the risk of hypercalcemia (sarcoidosis, tuberculosis or lymphoma)
  • Wheelchair bound (ambulation is a component of the QOL questionnaire

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: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Tredobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Cholecalciferol
Patients were given two cholecalciferol tablets (10,000 IU each) daily for 30 days.
Subjects receive cholecalciferol 20,000 IU daily for 30 days followed by 20,000 IU once weekly for 8 weeks.
Andre navne:
  • D-vitamin
Placebo komparator: Placebo
Patients were given two cholecalciferol placebo tablets daily for 30 days.
Pills made to look like vitamin D but have no medication in them
Andre navne:
  • sukker pille

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Rate of participant recruitment
Tidsramme: 6 months
The percentage of patients recruited from those that present to clinic.
6 months
Participant compliance with study procedures
Tidsramme: 6 months
Proportion completing the quality of life questionnaire, 6 minute walk test and medication regimen
6 months
Participant rate of retention
Tidsramme: 6 months
Proportion of participants retained in study
6 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of participants with hypercalcemia as a measure of safety and tolerability.
Tidsramme: 6 months
6 months
Number of participants that achieve a target serum 25-hydroxyvitamin D of 75nmol/L
Tidsramme: 8 months
8 months
The values achieved for quality of life and pain questionnaire and functional capacity measure.
Tidsramme: 8 months
Quality of life will be measured by the EQ-5D questionnaire. Pain will be measured by the Brief Pain Inventory questionnaire. Functional capacity will be measured by the standardized and validated 6 minute walk test.
8 months

Samarbejdspartnere og efterforskere

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

Sponsor

Efterforskere

  • Ledende efterforsker: Liz C da Silva, MS, Fraser Health Authority

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. september 2011

Primær færdiggørelse (Faktiske)

1. juli 2012

Studieafslutning (Faktiske)

1. juli 2012

Datoer for studieregistrering

Først indsendt

22. juni 2011

Først indsendt, der opfyldte QC-kriterier

5. juli 2011

Først opslået (Skøn)

7. juli 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

19. juni 2015

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

18. juni 2015

Sidst verificeret

1. juni 2015

Mere information

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 .

Kliniske forsøg med Hjertefejl

Kliniske forsøg med Cholecalciferol

3
Abonner