Association Between Vitamin D and Perioperative Hemoglobin Levels in Patients Undergoing Off-pump Coronary Artery Bypass Graft Surgery: Role of Hepcidin

NCT04986033 | Completed

• 1 other identifier: 4-2021-0707
• Study Type: observational
• Target: 135
• Locations: 1 country
• Sites: 1

Brief Summary

Preoperative anemia is present in more than 50% of patients undergoing cardiac surgery, which is associated with increased risk of transfusion, increased length of stay in the intensive care unit, and increased incidence of renal failure and mortality. To date, clinical research on perioperative anemia has been focused on finding and treating other underlying causes of anemia, lowering the threshold for transfusion, and performing careful transfusion. However, recently, it was known that hepcidin and erythroferrone are related to iron metabolism and absorption, vitamin D has an inverse correlation with the development of anemia, and is related to hepcidin concentration control. Therefore, in this study, the relationship between vitamin D, hepcidin concentration and perioperative hemoglobin level in patients with off-pump coronary artery bypass graft surgery was investigated together.

Conditions

Coronary Artery Disease

Outcome Measures

Primary Outcomes (1)

• Relationship about pre-operative vitamin D level and recovery of hemoglobin

  Vitamin D is a fat-soluble vitamin, a regulator acting on bone and calcium metabolism, and is known to affect the pathophysiology of several chronic diseases, and is particularly closely related to heart disease. Vitamin D deficiency was observed in 56% of patients undergoing cardiac surgery, and low vitamin D concentrations increased the risk of postoperative infection and organ failure, atrial fibrillation, and delirium. It is also known that vitamin D is closely related to anemia by regulating the secretion of erythroferrone and changing the concentration of hepcidin.

  Up to 1month

Eligibility Criteria

• Age: 20 Years+
• Sex: all
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients who consented to study enrollment among patients scheduled for off-pump coronary artery bypass graft

You may qualify if:

• \. Patients over 20 years of age undergoing off-pump coronary artery bypass graft

You may not qualify if:

• Emergency operation
• Minimal invasive coronary artery bypass graft
• Cooperative operation with other surgery
• Patients who need a mechanical ventricular assist device
• Patients with chronic kidney disease (eGFR \< 30)
• Patients who have a end stage renal disease and need a hemodialysis
• Patients with a low hemoglobin (Hb \< 10) before surgery
• Patients who have a some disease(leukemia, myeloma, aplastic anemia, sickle cell anemia, etc) affecting hematopoiesis
• Patients with a liver cirrhosis
• Patients who receive vit. D, iron supplements, erythropoietin within 6 months
• Patients who cannot understand the informed consent (eg. Foreigner, patients with cognitive dysfunction, etc)
• Patients who disagree this study

Sponsors & Collaborators

• Yonsei University: lead

Study Sites (1)

Division of Cardiac Anesthesiology, Department of Anesthesiology and Pain Medicine, Cardiovascular Hospital, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea

Seoul, South Korea

Location

MeSH Terms

Conditions

Coronary Artery Disease

Condition Hierarchy (Ancestors)

Coronary Disease; Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Arteriosclerosis; Arterial Occlusive Diseases; Vascular Diseases

Study Officials

• Seo Hee Ko

  Division of Cardiac Anesthesiology, Department of Anesthesiology and Pain Medicine, Cardiovascular Hospital, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 21, 2021
• First Posted: August 2, 2021
• Study Start: August 1, 2021
• Primary Completion: July 15, 2024
• Study Completion: July 30, 2024
• Last Updated: October 2, 2025

Record last verified: 2025-09

Data Sharing

• IPD Sharing: Will not share

Locations

KR (1)