Spirometry is the most common lung function test. It measures how much and how quickly you can move air out of your lungs. You breathe into a mouthpiece attached to a machine called a spirometer. The machine records your results.
Confirming the presence of your babyâs heartbeat. You may have gone to your doctor with vaginal bleeding or you may be anxious because of problems in a previous pregnancy (such as miscarriage). This ultrasound can routinely detect a heartbeat in your baby as early as 6-7 weeks.
A fetus can be detected as early as the sixth week of pregnancy. Many ultrasound technicians prefer to wait until at least that point in the pregnancy to do an ultrasound and many prefer waiting until the eighth week of pregnancy when more of the development of the fetus can be seen.