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Figure 4 Differences before and after epinephrine at the baseline condition and with oral propranolol in the mean cQTe (A), mean cQTp (B), mean cTp-e (C), maximum cQTe (D), minimum cQTe (E) and cQTe-D (F) in 11 LQT1 patients (open circles) and 11 LQT2 patients (solid circles). The differences in the mean cQTe, mean cTp-e, maximum cQTe and cQTe-D values with epinephrine at the baseline condition were significantly greater in the LQT1 group than in the LQT2 group. In both groups, propranolol completely suppressed the influence of epinephrine, and the differences in all variables with epinephrine plus oral propranolol were not significantly different between the two groups.
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