Efficacy of long-term rifaximin treatment for hepatic encephalopathy in the Japanese

Figure 1 Serum ammonia levels. Before rifaximin treatment, median of blood ammonia level was 104 μg/dL (range, 59-297 μg/dL), whereas two weeks after the treatment it decreased to 85 μg/dL (34-153), showing a significant difference (P = 0.002). The median values were 71 μg/ dL (47-341) after 4 wk, 79.5 μg/ dL (37-215) after 8 wk, 70 μg/ dL (31-221) after 12 wk, 80.5 μg/dL (44-150) after 24 wk, 81 μg/dL (20-298) after 36 wk, 91 μg/dL (53-169) after 48 wk, and eventually 85 μg/dL (45-192) after 60 wk. Decrease was noted at all the points after the start of the treatment when compared with the ones before it.