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Figure 4 Changes in ST-Segment Elevation

The ST-segment resolution in patients assigned to undergo percutaneous coronary intervention (PCI) with or without hyperoxemic reperfusion (measured by the area under the ST-segment deviation vs. time curve 0 to 3 h after PCI; intent-to-treat analysis). Results are shown for the overall study group and patients with anterior acute myocardial infarction (MI) <6 h. A greater proportion of anterior MI patients in the aqueous oxygen (AO) group had improved ST-segment resolution compared with controls.