QTc < 440 ms (Men) or <470 ms (Women) | No action required unless abnormal T-wave morphology—consider cardiac review if in doubt. |
QTc > 440 ms (Men) or >470 ms (Women), but <500 ms | Consider reducing dose or switching to drug of lower effect; repeat ECG and consider cardiology review. |
QTc > 500 ms | Stop suspected causative drug (s) and switch to drug with a lower effect: immediate cardiology review is needed. If the patient has syncope or pre-syncope, immediate ECG monitoring for ventricular arrhythmias should be performed. |
Low-risk antipsychotics lurasidone, | cariprazine or brexpiprazole. |