Sableover 6 years ago

I had a PT, who was a 24yr old male who c/o chest pains, feeling like something is on his chest, and it comes and go. I did his BP vitals twice to make sure I wasn't crazy. The first reading was 160/40, the second reading was 140/40. Turns out the PT had surgery at 4 yrs old for a vascular ring. An ECG was ran and the PT along with his mom went to the ER. My question is are there ways to detect certain heart defects through blood pressure like I did if so what sounds would I be hearing?