My wife is 29 years of old and at present 34wks pregnant.Specially during pregnancy sometimes she felt breathing trouble, we did ECG and the reports revealed Mild septal wall ischemia . 7 years back she once felt chest pain and after all medication and tests it was revealed she is having RBBB ,she undergone through TMT examination and result was negative (94%),doc certified she is out of danger,RBBB was congenital . Now recently this problem appears,what should I do and is this prob really very dangerous and lifethreatening??