Was on effexor (venlafaxine) xr and seroquel a couple years ago. recently been put back on both. could i still get qt prolongation even though i took these before?

QTc: You probably have a baseline EKG that will show your QT interval, it should not be above 470 in women. Do you have family history of cardiac disease or long QT syndrome? Since you are on two drugs that may prolong the QT interval you should have an EKG done to evaluate your QTc. These drugs only affect the QTc minimally, but you should be aware of symptoms such as lightheadedness, dizziness, >HR