Table 4.

Measures to prevent ventricular arrhythmias[58]

Measures to prevent ventricular arrhythmias
Stop QT prolonging drugs in patients with baseline QTc > 500 ms or with known LQTS
Stop QT prolonging drugs when QTc increases to > 500 ms or if QTc is prolonged by > 60 ms compared to baseline measurement
Control effectively fever in Brugada patients
Avoid the use of chloroquine/hydroxychloroquine, macrolides, fluoroquinolones, and protease inhibitors in patients with known risk factors such as prolonged QTc and electrolyte abnormalities (hypokalemia and hypomagnesemia)
Avoid concomitant use of QT prolonging antiarrhythmic drugs, including class IA and class III agents
Avoid hypokalaemia and hypomagnesemia
Monitor QT via ECG or kardia mobile application

LQTS: Long QT syndrome.