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Figure 2 Individual (left panel) and average (right panel) values of ST-segment shifts on the surface ECG at the end of the first, second and third balloon inflations in control and bradykinin-treated patients. In control patients, the ST-segment shifts decreased during the second and third inflations compared with the first. In contrast, in bradykinin-treated patients the ST-segment shifts were similar during all three inflations. During the first inflation, the ST-segment shift was less in bradykinin-treated than in control patients. Values are means ± SEM.