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KMID : 1102220230420030370
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Kidney Research and Clinical Practice
2023 Volume.42 No. 3 p.370 ~ p.378
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Risk of ventricular tachycardia and its outcomes in patients undergoing continuous renal replacement therapy due to acute kidney injury
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Kim Seong-Geun
Yun Dong-Hwan
Kim Ja-Youn
Lee Jin-Woo
Kang Min-Woo
Kim Yong-Chul
Kim Dong-Ki
Oh Kook-Hwan
Joo Kwon-Wook
Koo Ho-Seok
Kim Yon-Su
Han Seung-Seok
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Abstract
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Background: Despite efforts to treat critically ill patients who require continuous renal replacement therapy (CRRT) due to acute kidney injury (AKI), their mortality risk remains high. This condition may be attributable to complications of CRRT, such as arrhythmias. Here, we addressed the occurrence of ventricular tachycardia (VT) during CRRT and its relationship with patient outcomes.
Methods: This study retrospectively enrolled 2,397 patients who started CRRT due to AKI from 2010 to 2020 at Seoul National University Hospital in Korea. The occurrence of VT was evaluated from the initiation of CRRT until weaning from CRRT. The odds ratios (ORs) of mortality outcomes were measured using logistic regression models after adjustment for multiple variables.
Results: VT occurred in 150 patients (6.3%) after starting CRRT. Among them, 95 cases were defined as sustained VT (i.e., lasting ≥30 seconds), and the other 55 cases were defined as non-sustained VT (i.e., lasting <30 seconds). The occurrence of sustained VT was associated with a higher mortality rate than a nonoccurrence (OR, 2.04 and 95% confidence interval [CI], 1.23?3.39 for the 30-day mortality; OR, 4.06 and 95% CI, 2.04?8.08 for the 90-day mortality). The mortality risk did not differ between patients with non-sustained VT and nonoccurrence. A history of myocardial infarction, vasopressor use, and certain trends of blood laboratory findings (such as acidosis and hyperkalemia) were associated with the subsequent risk of sustained VT.
Conclusion: Sustained VT occurrence after starting CRRT is associated with increased patient mortality. The monitoring of electrolytes and acid-base status during CRRT is essential because of its relationship with the risk of VT.
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KEYWORD
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Acute kidney injury, Continuous renal replacement therapy, Electrolytes, Mortality, Ventricular tachycardia
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