In this pilot study, we demonstrate that renal tissue oxygenation drops rapidly after occlusion of the renal vasculature and returns to near baseline 30 minutes after reperfusion. In the porcine model, the %HbO(2) differs significantly between AO and AV occlusion for up to 35 minutes after ischemia onset, indicating a possible "ischemic window" in which AO occlusion may provide benefit over AV occlusion.
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