Had this 2 years ago - found by the CAA on ECG review - they put an OML on my Class 1. Did all the tests - 24hour ECG monitor, Exercise ECG, and Echocardiogram. Then further exercise ECG after 1 year - OML removed. Speak to CAA - they have a protocol. If you live in the South speak with Professor Joy at Nuffield Hospital in Woking - he is one of the approved consultants.