- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01388855
Pilot Study of Vitamin D Supplementation in Heart Failure
A Randomized, Double-Blind, Placebo-Controlled Trial of Vitamin D in Heart Failure: A Pilot Study
Panoramica dello studio
Stato
Condizioni
Intervento / Trattamento
Descrizione dettagliata
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%.
Tipo di studio
Iscrizione (Effettivo)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
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British Columbia
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New Westminster, British Columbia, Canada, V3L 3W7
- Royal Columbian Hospital
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
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
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Triplicare
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Sperimentale: Cholecalciferol
Patients were given two cholecalciferol tablets (10,000 IU each) daily for 30 days.
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Subjects receive cholecalciferol 20,000 IU daily for 30 days followed by 20,000 IU once weekly for 8 weeks.
Altri nomi:
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Comparatore placebo: Placebo
Patients were given two cholecalciferol placebo tablets daily for 30 days.
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Pills made to look like vitamin D but have no medication in them
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Rate of participant recruitment
Lasso di tempo: 6 months
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The percentage of patients recruited from those that present to clinic.
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6 months
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Participant compliance with study procedures
Lasso di tempo: 6 months
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Proportion completing the quality of life questionnaire, 6 minute walk test and medication regimen
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6 months
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Participant rate of retention
Lasso di tempo: 6 months
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Proportion of participants retained in study
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6 months
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Number of participants with hypercalcemia as a measure of safety and tolerability.
Lasso di tempo: 6 months
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6 months
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Number of participants that achieve a target serum 25-hydroxyvitamin D of 75nmol/L
Lasso di tempo: 8 months
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8 months
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The values achieved for quality of life and pain questionnaire and functional capacity measure.
Lasso di tempo: 8 months
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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.
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8 months
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Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Liz C da Silva, MS, Fraser Health Authority
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- 2011-028
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .