CompletedPhase 4

The Role of Vitamin D in the Pathophysiology of Chronic Failure

Canada91 participantsStarted 2013-01

Plain-language summary

Patients will undergo at baseline and regular intervals: * clinically indicated bloodwork/urine and echocardiogram testing * biomarker studies Upon enrolment in the study patients will be divided into 4 groups normal, mildly deficient and severely deficient. Normal and mild vitamin D levels will receive no treatment while severe Vitamin D deficiency will be randomized (50/50) to receive no treatment or vitamin D treatment. They will be seen in the heart failure clinic every 6 months. The patients will be followed for 26 months.

Who can participate

Age range

18 Years – 90 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * an ejection fraction (EF) ≤40% within the last 12 months before recruitment * established diagnosis of heart failure * \>18 years of age * patients with Vitamin D levels of sufficient, mild deficiency and severe deficiency Exclusion Criteria: * hypercalcemia * known hypersensitivity to Vitamin D * patient unwilling to comply with study requirements * any other disease other than heart failure that can alter the patients quality of life over a period of 6 months * women of child bearing potential * a patient currently taking vitamin d * severe renal impairment eGFR \<30

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

prevalence of Vitamin D deficiency amongst chronic heart failure patients at the University of Ottawa Heart Institute

Timeframe: up to 3 years

Trial details

NCT IDNCT01993537

SponsorOttawa Heart Institute Research Corporation

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2016-01

View on ClinicalTrials.gov More Vitamin D Deficiency trials