Had the doctors on Friday for some chest and left arm pain I've been having. Doctor checked me over took blood pressure and checked heart and lungs and said everything seemed fine but he would and me for an ECG just incase. Went for ECG today expecting to be all ok but they have said they need to send me for an echo?! ECG says borderline ECG and normal sinus rhythm and possible right ventricular conduction delay! Why would they send me for an echo?? I am freaking out as there is a family history of long QT SYNDROME and angina stroke etc!! Please help? X