Hi Doctors, I have svt while i was pregnant with my 1st child. That was back in 2013 and was given adenosine for treatment - which i dislike because it stop my organ from functioning for few second. And now the svt came back after few days and im scared. Will it be harmful for my baby? I am 24weeks now. My doctor knows i have history of svt, but what she didnt know is that svt this svt is back again. What do i do? I already know the exercise that i need to do to stop svt.