I went to the doctor with my daughter and Emma, my 2 yr old granddaughter. Emma has had a very faint heart murmur a couple of times - present one visit, gone the next, back the next, and so on.  So, the pediatrician wanted her to see a pediatric cardiologist.  
The appointment was today and I went along to talk with the cardiologist, just in case something was wrong (it wasn't).  They did an EKG and took her  blood pressure and listened to her heart a long time. She was really good when the doctor was in with her. She was great for the EKG - I thought, "yeah right, she's gonna just lay there with all those wires hooked up to her", and SHE DID!  (fooled me)  All is fine, no problems at all. It's a perfectly normal heart (the murmur wasn't present today).  
It has been at least 10 years since I was with a 2 year old in the doctors office and I can tell you, THERE IS A REASON 57 YEAR OLD WOMEN DON'T HAVE TWO YEAR OLD CHILDREN!!! 

  I needed a nap when we got out of that office.  Emma wasn't bad at all, just BUSY!  WHEW!