Can vitamin D reduce heart muscle damage after bypass surgery?

ISRCTN ISRCTN44896820
DOI https://doi.org/10.1186/ISRCTN44896820
Secondary identifying numbers 1372
Submission date
17/11/2018
Registration date
10/12/2018
Last edited
07/09/2020
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Circulatory System
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aim
Heart diseases are among the most common cause of death worldwide. A large proportion of deaths are caused by heart attacks (myocardial infarction), where blood flow to the heart is reduced resulting in damage to the heart muscle. If the arteries supplying blood to the heart start to become blocked, coronary artery bypass graft (CABG) surgery to replace the blocked sections of artery can reduce angina (chest pain). However, CABG surgery has complications, including an increased risk of heart attack. Vitamin D deficiency is thought to be linked to poorer recovery from heart attack and CABG surgery. This study aims to investigate if vitamin D supplementation can reduce injury to the heart following CABG surgery.

Who can participate?
Adults with vitamin D deficiency undergoing CABG

What does the study involve?
Participants are randomly allocated to one of two groups. Those in the first group receive vitamin D at 3 doses per day for 3 days before surgery. The second group will receive a dummy pill (placebo). Both groups will have standard CABG surgery.

What are the possible benefits and risks of participating?
Those in the vitamin D group might benefit from its effects. Vitamin D has few side effects, especially when taken for only a few days.

Where is the study run from?
Shahid Modarres Hospital (Iran)

When is the study starting and how long is it expected to run for?
September 2017 to January 2019

Who is funding the study?
Deputy of Research of Shahid Beheshti School of Medicine

Who is the main contact?
Dr Erfan Tasdighi
erfan.tasdighi@gmail.com

Contact information

Mr Erfan Tasdighi
Scientific

Saadat Abad Boulevard
District 2
Tehran
1153733163
Iran

ORCiD logoORCID ID 0000-0003-2146-7083

Study information

Study designRandomized controlled trial
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a participant information sheet
Scientific titleAssociation between vitamin D administration and cardiac cell pathology in patients undergoing CABG surgery
Study objectivesVitamin D administration in patients with vitamin D deficiency affect pathological features of cardiac muscle cells.
Ethics approval(s)Ethics committee of Shahid Beheshti Medical University, 04/11/2018, ref: IR.SBMU.RETECH.REC.1397.616
Health condition(s) or problem(s) studiedPrevention of cardiomyopathy following CABG surgery
InterventionParticipants undergoing coronary artery bypass graft (CABG) surgery are randomly allocated to group A (intervention), who receive 3 doses of vitamin D (50000 U) a day for 3 days before surgery or group B (control), who will receive placebo.
Intervention typeSupplement
Primary outcome measure1. Caspase 2 enzyme level measured by IHC (immunohistochemistry) of right atrial auricle biopsy during and after surgery
2. Caspase 3 enzyme level measured by IHC of right atrial auricle biopsy during and after surgery
3. Caspase 7 enzyme level measured by IHC of right atrial auricle biopsy during and after surgery
4. Serum IL-10 level measured by ELISA before the intervention (3 days before surgery), just before the surgery, just after surgery and one day after surgery
5. Serum insulin-like growth factor level measured by standard laboratory test before the intervention (3 days before surgery), just before surgery, just after the surgery and one day after surgery
Secondary outcome measures1. Blood loss during surgery measured by suction device
2. Blood units usage assessed by counting the number of packed cells that have been used during the surgery
3. Ventilation time measured by ventilator machine during and after surgery
4. Kidney damage assessed by blood creatinine level before the intervention (3 days before surgery), just after the surgery and one day after surgery
Overall study start date10/09/2017
Completion date21/01/2019

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants66
Total final enrolment70
Key inclusion criteria1. Candidate for first-time elective CABG surgery for coronary artery disease (CAD)
2. Coronary artery surgery only (i.e. no valvular surgery)
3. Cardiopulmonary pump used during surgery
4. Vitamin D level below 30 ng/ml
Key exclusion criteria1. Renal failure or creatinine level >1.5 mg/dl
2. Previous use of vitamin D supplement
Date of first enrolment20/10/2018
Date of final enrolment23/12/2018

Locations

Countries of recruitment

  • Iran

Study participating centre

Shahid Modarres Hospital
Saadat Abad
Tehran
1153733163
Iran

Sponsor information

Shahid Beheshti University of Medical Sciences
University/education

Deputy of Research of School of Medicine
7th Floor, Bldg No.2
Shahid Beheshti University of Medical Sciences
Arabi Ave
Velenjak
Tehran
19839-63113
Iran

ROR logo "ROR" https://ror.org/034m2b326

Funders

Funder type

Other

investigator initiated and funded

No information available

Results and Publications

Intention to publish date31/03/2020
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryStored in repository
Publication and dissemination planPlanned publication in a high-impact peer-reviewed journal.
IPD sharing planAll data sets including demographic, preoperative and postoperative ones will be available after results publication. All data sets can be shared, if the recipients mention this study in their project. Any kind of analysis can be performed on these data sets. There was no need for patient consent, because all data sets are in codes and have no patient names in them. Anyone who needs the data sets can send a request form to Dr Mahnoosh Foroughi (mahnoosh.foroughi@gmail.com).

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/07/2020 07/09/2020 Yes No

Editorial Notes

07/09/2020: Publication reference added.
29/01/2020: The intention to publish date has been changed from 21/05/2019 to 31/03/2020.
18/11/2019: Total final enrolment number added.