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Δευτέρα 19 Σεπτεμβρίου 2016

Rifaximin: A reasonable alternative for norfloxacin in the prevention of spontaneous bacterial peritonitis in patients with HCV-related liver cirrhosis

Publication date: September 2016
Source:Alexandria Journal of Medicine, Volume 52, Issue 3
Author(s): Mohammed M. Shamseya, Marwa A. Madkour
BackgroundNorfloxacin is the most commonly used agent for the prophylaxis against spontaneous bacterial peritonitis (SBP) in patients with liver cirrhosis. Rifaximin, another broad spectrum antibiotic, is used for the treatment of traveler's diarrhea and hepatic encephalopathy.ObjectiveWe aimed to test the efficacy of rifaximin versus norfloxacin for prevention of SBP in patients with hepatitis C virus (HCV)-related liver cirrhosis.Patients and methods86 patients with HCV-related liver cirrhosis and ascites were enrolled and divided into two groups of matching age, sex and Child–Pugh class. Group I was given norfloxacin 400mg/day as single dose, and group II rifaximin 1200mg/day in three divided doses. They were followed for up to one year. Study endpoints were SBP, hepatocellular carcinoma, compliance failure, death, or liver transplantation.ResultsMore than 70% of patients received the antimicrobial as primary prophylaxis and the rest were given secondary prophylaxis against SBP. The mean follow-up period was 10.16±2.64months for norfloxacin and 10.26±2.32months for rifaximin (p=0.863). Although statistically insignificant (p=0.265), patients on rifaximin developed fewer episodes of SBP than those on norfloxacin (4.7% vs. 14%). Also, the infection-free duration before SBP was longer (p=0.129) with rifaximin than norfloxacin (9.5 vs. 5.0months). Rifaximin significantly reduced the rate of new compared to past episodes of SBP by 20.9% (p=0.007) vs. 13.9% for norfloxacin (p=0.112). Overall survival was equal in both groups. Patients adhered to therapy regimen of norfloxacin for significantly longer time than rifaximin (p=0.010).ConclusionRifaximin is – at least – as good as norfloxacin. It seems to be an appropriate alternative for long-term primary and secondary prophylaxis of SBP in cirrhotic patients with ascites. Modification of dose regimen should be considered to improve patient's compliance to rifaximin.



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