The GHM-ONE is based on a powerful processor which, in combination with a relay card and mains adapter card, serves as the base unit. The base unit can be adapted to applications with a communications card and up to two I/O cards. The number of physical inputs and outputs can be expanded with external I/Oâs. This modular layout enables
Some practitioners routinely recommend an ultrasound at 6 to 9 weeks to confirm and date the pregnancy, but others will only do one if they have reason to suspect any of the following:
A pregnancy ultrasound may be done during the first 12 weeks of pregnancy to: 1  Confirm a normal pregnancy. 2  Determine the baby's age.  Look for problems, such as ectopic pregnancies or the chances for a miscarriage.