Thanks for writing to us.
ECGs are best interpreted when you actually look at them. like in your query the QT of 534 has no relevance unless i know your heart rate
which you have mentioned to be slow. Moreover the character of Rsr' in V1 can not be ascertained without looking at it. So i request you to see your cardiologist and proceed as per his advise. since you do not have any major symptoms as yet , so do not panic. feel free to discuss further.