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.