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TABLE 4

QTc Prolongation Associated With Antipsychotics

MedicationMean QTc Prolongation, ms
Thioridazine 25–30 
Ziprasidone 5–22 
Pimozide 13 
Clozapine 8–10 
Haloperidol 
Quetiapine 
Risperidone 0–5 
Olanzapine 
Aripiprazole 
MedicationMean QTc Prolongation, ms
Thioridazine 25–30 
Ziprasidone 5–22 
Pimozide 13 
Clozapine 8–10 
Haloperidol 
Quetiapine 
Risperidone 0–5 
Olanzapine 
Aripiprazole 
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