fig1

Figure 1. The evaluation of the abdominal skin flaps 72 h following ischemia-reperfusion. Black zones represent the necrotic areas. Red, yellow, and the adjacent blue areas represent surviving areas with rich blood perfusion. (a) Representative photographs of abdominal skin flap microcirculation in the five groups are shown; (b) the survival rate of the total flap area. Flap survival rates were markedly higher in the hyperbaric oxygen, hydrogen-rich saline, and hyperbaric oxygen + hydrogen-rich saline groups; (c) the average blood perfusion of total skin flaps. The hyperbaric oxygen + hydrogen-rich saline group has the greatest blood perfusion among the surgery groups. IR: ischemia reperfusion, HBO: postoperative hyperbaric oxygen, HRS: hydrogen-rich saline