ArticleInterdisciplinary cardiovascular and thoracic surgery2025
Cardiac surgery-associated acute kidney injury in neonatal Norwood procedure: incidence, risk factors and impact on mortality and outcomes.
Article in Interdisciplinary cardiovascular and thoracic surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesAcute kidney injury commonly complicates congenital heart surgery with cardiopulmonary bypass, increasing morbidity and mortality. This study aimed to evaluate risk factors for postoperative acute kidney injury and its impact on outcomes after the Norwood procedure.
methodsNeonates undergoing the Norwood procedure from 2001 to 2022 were reviewed. Using modified neonatal Kidney Disease Improving Global Outcomes criteria, we assessed acute kidney injury and analysed its risk factors and impact on survival.
resultsAmong the 355 patients who were included, severe acute kidney injury occurred in 100 (28.2%). Risk factors were low weight at Norwood <2.5 kg (odds ratio: 3.0, P = 0.015) and extracorporeal membrane oxygenation support (odds ratio: 2.2, P = 0.013). Shunt type was not identified as a risk (P = 0.317). Acute kidney injury was an independent risk factor for in-hospital death (odds ratio 2.3, P = 0.010) but did not influence survival after hospital discharge (hazard ratio: 1.5, P = 0.230). The hazard ratio for mortality in patients with acute kidney injury compared to patients without acute kidney injury was 2.5, P < 0.001 with a modified Blalock-Taussig-Thomas shunt and 1.9, P = 0.010 with a right ventricle-to-pulmonary artery conduit.
conclusionsSevere acute kidney injury occurred in approximately a quarter of patients after the Norwood procedure and is an independent risk for in-hospital mortality, both in patients with a modified Blalock-Taussig-Thomas shunt and right ventricle-to-pulmonary artery conduit.
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