Fig. 1

Time course of the experiment. Hemorrhagic shock was introduced 30 min before REBOA started (T = -30 min). Hydrogen gas inhalation was started at the same time as REBOA inflation (T = 0) in the Hydrogen group. The balloon was deflated at T = 60, and the animals were observed until T = 240. The blood gas analysis and intestinal tissue sampling were conducted every 60 min. Blood lactate was measured every 30 min.