{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:30:12Z","timestamp":1753878612909,"version":"3.41.2"},"reference-count":28,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,2,18]],"date-time":"2024-02-18T00:00:00Z","timestamp":1708214400000},"content-version":"vor","delay-in-days":17,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Transplantation"],"published-print":{"date-parts":[[2024,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>Kidney disease is common after pediatric heart transplantation. Serum creatinine\u2010based glomerular filtration rate is the most frequently reported measure of kidney function. Albuminuria is an additional marker of kidney dysfunction and is not well described in this population. In this study, we evaluate the prevalence and degree of albuminuria and describe clinical factors associated with albuminuria in a cohort of pediatric heart transplant recipients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>This was a cross\u2010sectional study of pediatric heart transplant recipients. Albuminuria was assessed using spot urine albumin\u2010to\u2010creatinine ratio collected at the most recent annual screening cardiac catheterization through August 2019.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In 115 patients at a median duration of 10.2 years post\u2010transplant, 39% had albuminuria. Stage 3 or greater chronic kidney disease was present in 6%. The immunosuppressive regimen at the time of measurement contained a calcineurin inhibitor (CNI) in 88% and a proliferation signal inhibitor (PSI) in 62%. In multivariable modeling, lower eGFR, PSI use, and younger age at transplant were associated with higher levels of albuminuria, whereas CNI use was associated with lower levels of albuminuria.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Albuminuria is a prevalent finding in medium\u2010term follow up of pediatric heart transplant recipients, reflecting kidney injury, and is associated with other markers of kidney dysfunction, such as low eGFR. Younger age at transplant, lower eGFR, and PSI use were among the associations with albuminuria.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ctr.15253","type":"journal-article","created":{"date-parts":[[2024,2,19]],"date-time":"2024-02-19T07:14:58Z","timestamp":1708326898000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A quantitative assessment of renal function utilizing albuminuria in pediatric heart transplant recipients"],"prefix":"10.1111","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6607-916X","authenticated-orcid":false,"given":"Erik L.","family":"Frandsen","sequence":"first","affiliation":[{"name":"Division of Cardiology Loma Linda University Children's Hospital  Loma Linda California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard A.","family":"Kronmal","sequence":"additional","affiliation":[{"name":"Department of Biostatistics University of Washington  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