标题：Hepatic Artery and Portal Vein Doppler Indexes in Non-alcoholic Fatty Liver Disease Before and After Treatment to Prevent Unnecessary Health Care Costs
摘要：Background: We tested whether hepatic haemodynamics assessed by Doppler ultrasonography can be a predictor of response to therapy in patients with non-alcoholic fatty liver disease (NAFLD) to prevent further unnecessary diagnostic tests and interventions. Methods: Forty eight consecutive patients affected by NAFLD, who refered to some clinics in Tabriz, Iran between 2009 and 2011 were included in the study. Response to therapy was assessed by decrease in liver enzyme levels. Three liver Doppler parameters (hepatic artery resistance index [RI], hepatic artery pulsatility index [PI] and portal vein waveform [PVW]) were analysed in all subjects who showed a decrease in liver function tests results. Wilcoxon and paired student's t -test were used for analysis. Results: Forty eight subjects with NAFLD were included in the study during 21 months, out of which 22 (39.1% male - mean age: 37.6 ± 8.3) responded to the treatment and formed the basis of this study. Mean hepatic artery RI increased significantly from 0.60 ± 0.07 to 0.83 ± 0.27before and after treatment, however, there was no significant differences between hepatic artery PI or PVW. Conclusions: Increase in hepatic artery RI assessed by Doppler ultrasound may provide information on improvement of NAFLD in patients during the course of therapy.
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