An observational study in Patients Undergoing Valvular Heart Surgery, sponsored by Yonsei University. Active, not recruiting at 1 site in South Korea. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-30.
Sponsored by Yonsei University · Observational
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The investigators aimed to investigate the association of postoperative hemoglobin levels with acute kidney injury and acute kidney disease after valvular heart surgery, with a focus on acute kideny disease.
Yonsei University is the lead sponsor of 1,418 studies on the registry; 241 are open to participants now.
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tertiary care hospital
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Patients who underwent valvular heart surgery, including concomitant coronary artery bypass grafting, aortic procedures, or other cardiac procedures, between January 2013 and December 2023 at Severance Cardiovascular Hospital of Yonsei University Health System
Exclusion Criteria:
Patients who underwent congenital heart surgery or presenting with acute coronary syndrome, including ST-elevation myocardial infarction, were excluded.
Patients aged 18 years or older who underwent valvular heart surgery with cardiopulmonary bypass between January 2013 and December 2023, whose postoperative hemoglobin levels and renal outcomes were assessed retrospectively.
Acute kidney disease
Acute kidney disease (AKD) was defined according to the KDIGO criteria as kidney dysfunction occurring or persisting between postoperative days 8 and 90, meeting at least one of the following criteria: a ≥50% increase in serum creatinine (sCr) from baseline, an estimated glomerular filtration rate (eGFR) \<60 mL/min/1.73 m² or a ≥35% decrease in eGFR from baseline, or receipt of kidney replacement therapy.
Time frame: Bewteen postoperative days 8 and 90
Acute kidney injury
AKI was defined according to the KDIGO criteria as an increase in sCr of ≥0.3 mg/dL within 48 h or ≥50% within 7 days after surgery.
Time frame: within postoperative days 7
Plan to share: No
No publications or documents are linked to this record.
Started Sep 2026 (actual). Primary completion is estimated for Sep 2027, 11 months after the start.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is active, not recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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