Thank you for your question.
I am happy to help you today.
The amount of concern would really depend on the degree of ST /T wave abnormalities.
Some doctors might just retest in a few months but some may want to do further testing.
I would like the doctor who did more testing.
The occasional PAC isn't a huge worry but of coarse if a person is symptomatic with them treatment is adviseable.
The fact the the NST was negative is great but since there was some changes I think it deserves to be looked at further.
The doctor might prescribe a cardiac event monitor that is worn to record cardiac rhythmn.
A angiogram ( cardiac cath ) might also be done.
It would be best to get an ok from a Cardiologist.
The patients doctor might want to orde more testing before giving complete exercise clearance.