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ECG changes during haloperidol and pimozide treatment of Tourette's disorder

Published Online:https://doi.org/10.1176/ajp.144.5.673

The ECG QTc interval was significantly prolonged by pimozide but not haloperidol or placebo in a randomized clinical trial with 40 patients with Tourette's disorder. However, no adverse cardiac effects or differences in rate, rhythm, or waveform were found.

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