Biomarker-guided detection of acute kidney injury in abdominal aortic surgery: the new and the old
Introduction: Acute kidney injury (AKI) is a common complication in patients undergoing major vascular surgery. Despite significant research efforts in this area, the incidence of AKI remains high, posing a significant challenge to healthcare systems, especially in situations where resources are lim...
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
03 July 2024
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| In: |
Frontiers in medicine
Year: 2024, Volume: 11, Pages: 1-10 |
| ISSN: | 2296-858X |
| DOI: | 10.3389/fmed.2024.1386018 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.3389/fmed.2024.1386018 Verlag, kostenfrei, Volltext: https://www.frontiersin.org/journals/medicine/articles/10.3389/fmed.2024.1386018/full 
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| Author Notes: | Christian Nusshag, Vivienne Theobald, Markus Wortmann, Philipp Kaimann, Maximilian Dietrich, Daniel Gruneberg, Kevin Tourelle, Maik von der Forst, Markus A. Weigand, Moritz S. Bischoff, Dittmar Böckler and Felix C.F. Schmitt |
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| 520 | |a Introduction: Acute kidney injury (AKI) is a common complication in patients undergoing major vascular surgery. Despite significant research efforts in this area, the incidence of AKI remains high, posing a significant challenge to healthcare systems, especially in situations where resources are limited. Early prediction of AKI severity and individualized postoperative care is therefore essential. Methods: The primary objective of this exploratory study was to assess the diagnostic value of urine cell-cycle arrest biomarkers [(TIMP-2) × (IGFBP7)] and soluble urokinase plasminogen activator receptor (suPAR) for predicting moderate or severe AKI within 24 h after open aortic surgery, and compared to routine kidney biomarkers. Seventy-five patients undergoing elective aortic surgery were included. Clinical parameters, urine and blood samples were collected preoperatively, immediately postoperatively, and 24 h later. AKI was defined using KDIGO criteria. Individual and combined diagnostic performance of biomarkers were evaluated. Results: Of the 75 patients, 61% developed AKI, of which 28% developed moderate or severe AKI within 24 h of surgery. Baseline demographics, comorbidities and kidney parameters did not differ between patients with moderate or severe AKI (AKI II/III) and none or mild AKI (AKI 0/I), except for higher preoperative suPAR levels in later AKI II/III patients. Urine osmolality, Cystatin C and serum creatinine had the highest predictive power for AKI II/III with AUCs of 0.75-0.72. (TIMP-2) × (IGFBP7), and neither (TIMP-2) × (IGFBP7) nor suPAR individually showed superior diagnostic value. Combining CysC or SCr with urine osmolality and 6 h urine output gave the best performance with AUCs of 0.86 (95% CI, 0.74-0.96) and 0.85 (95% CI, 0.75-0.95) respectively. Conclusion: Our study suggests that routine parameters like urine osmolality, CysC, SCr and 6 h urine output perform best in predicting postoperative AKI after aortic surgery compared to the new biomarkers (TIMP-2) × (IGFBP7) and suPAR. Combining biomarkers, particularly CysC or SCr with urine output, urine osmolality, may enhance diagnostic accuracy. Further validation in larger cohorts and clinical settings is warranted to establish their clinical utility. | ||
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| 650 | 4 | |a aortic sugery | |
| 650 | 4 | |a biomarkers | |
| 650 | 4 | |a cell cycle arrest | |
| 650 | 4 | |a intensive care medicine | |
| 650 | 4 | |a soluble urokinase plasminogen activator receptor | |
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