Association Between Post-operative Anemia and Mortality After Valvular Heart Surgery

Association Between Remote Post-operative Anemia and Mortality in Patients Undergoing Valvular Heart Surgery

The investigators aimed to evaluate whether postoperative anemia can predict 1-year mortality after valvular heart surgery independent of preoperative anemia. Patients who underwent valvular heart surgery were divided into four groups according to whether or not they had preoperative and postoperative anemia. Postoperative one-year mortality, as well as overall mortality and a composite of death and heart failure requiring hospitalization, was investigated according to the groups, adjusted by confounders.

Inclusion Criteria:

• Patients who underwent valvular heart surgery between January 2016 and July 2023 at Severance Cardiovascular Hospital of Yonsei University Health System.

Exclusion Criteria:

• patients who underwent only pulmonary valve surgery
• those with missing hemoglobin values at 2months after the surgery, due to loss of follow up or death.