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Predictors of acute kidney injury after paraquat intoxication #MMPMID28881652
Weng CH; Chen HH; Hu CC; Huang WH; Hsu CW; Fu JF; Lin WR; Wang IK; Yen TH
Oncotarget 2017[Aug]; 8 (31): 51345-54 PMID28881652show ga
Paraquat intoxication is characterized by multi-organ failure, causing substantial mortality and morbidity. Many paraquat patients experience acute kidney injury (AKI), sometimes requiring hemodialysis. We observed 222 paraquat-intoxicated patients between 2000 and 2012, and divided them into AKI (n = 103) and non-AKI (n = 119) groups. The mortality rate was higher for AKI than non-AKI patients (70.1% vs. 40.0%, P < 0.001). Patients with AKI had a longer time to hospital arrival (P = 0.003), lower PaO2 (P = 0.006) and higher alveolar-arterial O2 difference (P < 0.001) 48 h after admission, higher sequential organ failure assessment 48-h score (P < 0.001), higher severity index of paraquat poisoning (SIPP) score (P = 0.016), lower PaCO2 at admission (P = 0.031), higher PaO2 at admission (P = 0.015), lower nadir PaCO2 (P = 0.001) and lower nadir HCO3 (P = 0.004) than non-AKI patients. Multivariate logistic regression indicated that acute hepatitis (P < 0.001), a longer time to hospital arrival (P < 0.001), higher SIPP score (P = 0.026) and higher PaO2 at admission (P = 0.014) were predictors of AKI. The area under the receiver operating characteristic curve confirmed that an Acute Kidney Injury Network 48-hour score ? 2 predicted AKI necessitating hemodialysis with a sensitivity of 0.6 and specificity of 0.832. AKI is common (46.4%) following paraquat ingestion, and acute hepatitis, the time to hospital arrival, SIPP score and PaO2 at admission were powerful predictors of AKI. Larger studies with longer follow-up durations are warranted.