The dobutamine stress echo test involves the injection of a medication called dobutamine while you are closely monitored. The medication stimulates your heart in a similar way as exercise. Important: If you have a pacemaker/defibrillator, it must be checked at Cleveland Clinic before your dobutamine stress echo test.
Your Baby During the Second Trimester. The second trimester is normally considered to be from the beginning of the fourth month to the end of the sixth month. This works out in weeks to start from about the thirteenth week of pregnancy.
3D Ultrasound 19 Weeks. The second trimester is when many women will have an ultrasound to do a fetal anatomy survey to check the health of their baby. Typically these are done between weeks 18 and 22, because this is the best timing to see the most of baby.