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Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin D (ASSESS-D)

1. april 2021 oppdatert av: Intermountain Health Care, Inc.
Each patient who is admitted for preoperative preparation for elective open heart surgery at Intermountain Medical Center will be invited to participate in this study. After a written informed consent is obtained, patients meeting inclusion/exclusion criteria will be randomized 1:1 to the treatment arm or placebo/control arm. Those randomized to the treatment arm will receive three 50,000 unit oral doses of vitamin D3 supplementation. The first dose will be given the evening before surgery. The second and third doses will be given either orally or per NG tube on the mornings of post-op days 1 and 2. Blood will be obtained at the following time periods: 1) At baseline pre-procedure 12 to 18 hours before planned surgery; 2) Post-operative day 1, 12 to 24 hours after surgery; 3) 48 hours after surgery; 4) 72 hours after surgery; 5) At discharge (estimated to be between 5-8 days after surgery); and 6) At the 6-month follow-up visit (post-surgery). Plasma levels of 25(OH) vitamin D will be measured on each sample.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Each patient who is admitted for preoperative preparation for elective open heart surgery at Intermountain Medical Center will be invited to participate in this study. The patient's history and medical records will be reviewed and data gathered will be used to evaluate the patient's relationship to inclusion and exclusion criteria. After a written informed consent is obtained, subjects will be randomized 1:1 to the treatment arm or placebo/control arm. Those randomized to the treatment arm will receive three 50,000 unit oral doses of vitamin D3 supplementation. The first dose will be given the evening before surgery. The second and third doses will be given either orally or per NG tube on the mornings of post-op days 1 and 2. Approximately 15-20 ml (about one tablespoon) of blood will be obtained at the following time periods (+/- 4 hours): 1) At baseline pre-procedure 12 to 18 hours before planned surgery; 2) Post-operative day 1, 12 to 24 hours after surgery; 3) 48 hours after surgery; 4) 72 hours after surgery; 5) At discharge (estimated to be between 5-8 days after surgery); and 6) At the 6-month follow-up visit (post-surgery). Each blood sample will be transported to The Center for Molecular and Genetic Research at LDS Hospital Cardiovascular Genetics Laboratory for preparation and storage. Plasma levels of 25(OH) vitamin D will be measured on each sample.

Studietype

Intervensjonell

Registrering (Faktiske)

150

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Forente stater
    • Utah
      • Murray, Utah, Forente stater, 84143
        • Intermountain Heart Institute

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

Inclusion Criteria:

  1. Male or female >= 18 years of age
  2. Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of any study procedures
  3. Subject is scheduled for elective open heart surgery at Intermountain Medical Center
  4. Subject is relatively stable as assessed by the Principal Investigator

Exclusion Criteria:

  1. Inability or refusal of the patient and/or the patient's legally acceptable representative to provide written informed consent for any reason.
  2. History of previous vitamin D supplementation > 1,000 units of vitamin D3 per day within the past three months.
  3. Evidence of hypercalcemia on screening labs (> 10.5 milligrams per deciliter of blood).
  4. Any scheduled cardiac surgical procedure that does not require open thoracotomy (the reason for this exclusion is that the study design requires that the patients will undergo a significantly stressful procedure, which can be generally guaranteed if the patient undergoes open thoracotomy).
  5. Known allergic reaction or other intolerance to oral vitamin D3.
  6. Pregnant and/or lactating women and women of child bearing potential who are not using acceptable means of contraception. Women of childbearing potential must be using adequate measures of contraception (as determined by the Principal Investigator) to avoid pregnancy and should be highly unlikely to conceive during the study period. Women of childbearing potential must have a negative pregnancy test at screen.
  7. Subject participation in previous investigational interventional studies within 30 days of the current study.
  8. Other conditions that in the opinion of the Principal Investigator may increase risk to the subject and/or compromise the quality of the clinical trial.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Firemannsrom

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: Treatment
Those randomized to the treatment arm will receive three 50,000 unit oral doses of vitamin D3 supplementation.
Kosttilskudd: Vitamin D3
Those randomized to the treatment arm will receive three 50,000 unit oral doses of vitamin D3 supplementation. The first dose will be given the evening before surgery. The second and third doses will be given either orally or per NG tube on days 1 and 2 after surgery.
Placebo komparator: Placebo/Control Arm
Those randomized to the control arm will receive three oral placebo doses.
Kosttilskudd: Placebo
Those randomized to the control arm will receive three placebo doses. The first dose will be given the evening before surgery. The second and third doses will be given either orally or per NG tube on days 1 and 2 after surgery.

Hva måler studien?

Primære resultatmål

Resultatmål
Tidsramme
Changes in 25(OH) vitamin D levels (ng/ml) between baseline (pre-surgery) and 72 hours post-surgery.
Tidsramme: 72 hours
72 hours

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Comparison of 25(OH) vitamin D levels (ng/ml) between baseline and other time points.
Tidsramme: 12-24 hrs, 48 hrs, discharge (approximately 5-8 days post-surgery), 6 months
Subjects will be re-assessed on post-operative day 1 (12-24 hours after surgery), then at 48 and 72 hours post-surgery, at discharge (approximately 5-8 days post-surgery), and at a 6 month post-surgery follow-up visit.
12-24 hrs, 48 hrs, discharge (approximately 5-8 days post-surgery), 6 months
Percent differences in adverse clinical outcomes between the vitamin D3 supplementation treatment and placebo arms.
Tidsramme: 6 months
Clinical outcomes that will be monitored include: death, myocardial infarction, stroke, repeat coronary revascularization or hospitalization for heart failure, worsening of renal function, hospitalization for pneumonia or other acute systemic infection or any other serious adverse clinical event.
6 months
Time to adverse clinical events stratified by vitamin D3 supplementation and placebo arms.
Tidsramme: 6 months
Clinical outcomes that will be monitored include: death, myocardial infarction, stroke, repeat coronary revascularization or hospitalization for heart failure, worsening of renal function, hospitalization for pneumonia or other acute systemic infection or any other serious adverse clinical event.
6 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Intermountain Health Care, Inc.

Etterforskere

  • Hovedetterforsker: Joseph B Muhlestein, MD, Intermountain Health Care, Inc.

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. juli 2015

Primær fullføring (Faktiske)

1. oktober 2018

Studiet fullført (Faktiske)

1. oktober 2020

Datoer for studieregistrering

Først innsendt

8. april 2015

Først innsendt som oppfylte QC-kriteriene

29. mai 2015

Først lagt ut (Anslag)

2. juni 2015

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

5. april 2021

Siste oppdatering sendt inn som oppfylte QC-kriteriene

1. april 2021

Sist bekreftet

1. april 2021

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • 1040458

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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