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.
Starting from the fourth week, your babyâs heartbeat can be detected transvaginally. Starting from 12th week your doctor can detect a babyâs heart beating via a Doppler device, although many doctors wait longer to use a Doppler, as itâs quite difficult to find a heartbeat at such an early gestation.