How do doctors diagnose a congenital heart defect? what tests are done?

CHD: Common tests used to evaluate for congenital heart disease include pulse oximetry, blood pressure, chest xray and echocardiogram.

Physical exam/tests: Today, many infants CHD is picked up on a pre-natal ultrasound done for other reasons.Others are suspected at birth due to physical findings, which can be confirmed by an EKG and a cardiac ultrasound. Sometimes other studies like a Holter monitor or a cardiac cath are needed. The tools used are guided by the physicians pursuing the findings. Actually listening to the heart can often give an answer