Clinical Research Papers:
Risk factors for hemoglobinuria after ultrasonography-guided percutaneous microwave ablation for large hepatic cavernous hemangiomas
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Fangyi Liu1, Xiaoling Yu1, Zhigang Cheng1, Zhiyu Han1, Jianping Dou1, Jie Yu1 and Ping Liang1
1Department of Interventional Ultrasound, Chinese PLA General Hospital, Beijing, 100853 China
Ping Liang, email: [email protected]
Keywords: microwave ablation; hepatic cavernous hemangioma; ultrasound guidance; hemoglobinuria; risk factors
Received: September 07, 2017 Accepted: October 29, 2017 Published: May 22, 2018
Thermal ablation of large hepatic cavernous hemangiomas may lead to intravascular hemolysis, hemoglobinuria, and even acute renal failure. This study aimed to identify the risk factors associated with hemoglobinuria after ultrasonography-guided percutaneous microwave ablation for large hepatic cavernous hemangiomas. In our study, 11 related risk factors were analyzed using univariate and multivariate binary logistic regression model and Receiver operating characteristic curves to determine the contribution to hemoglobinuria after microwave ablation for 49 patients with 51 hepatic cavernous hemangiomas. By multivariate analysis, the ablation time (p = 0.021; Odds Ratio, 1.005), and the number of antenna insertions (p = 0.036; Odds Ratio, 3.568) were the independent risk factors associated with hemoglobinuria. The cutoff value for ablation time and the number of antenna insertions in predicting the presence of hemoglobinuria was 1185s (sensitivity, 75%; specificity, 69%) and 4.5 (sensitivity, 55%; specificity, 83%), respectively. Less than 5 of antenna insertions and less than 20 mins of ablation time may therefore be recommended in patients with microwave ablation of large hepatic cavernous hemangiomas, in order to reduce the occurrence of hemoglobinuria. This is the first report about the risk factors analysis associated with hemoglobinuria after thermal ablation for large hepatic cavernous hemangiomas.
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