Recently Had A Colonoscopy And They Discovered A Bundle Branch

Recently had a colonoscopy and they discovered a bundle branch block. I am 62, exercise regularly, healthy weight, do not smoke or drink. I have no symptoms. My colon doctor said that the prep could even cause it. I did experience nausea and dry heaves with the diarrhea with the prep. Could that be true? I will do a follow up with my GP.