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Dynamic ECG changes (A) ECG on admission to Day Hospital, complete right bundle branch block that has previously been absent and QT interval prolongation up to 510 ms (<460 ms), (B) ECG on admission to Cardiac Intensive Care Unit, right bundle branch hemiblock, (C) ECG after intravenous catecholamines, T-wave inversion, (D) ECG at 2 months follow-up, negative.
