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.
An ultrasound is perhaps the most common way to detect the sex of your baby. With an ultrasound, you can probably not detect the sex of yore baby until sometime between week 16 and week 20 of pregnancy. Having said that, there are a great many factors that go into how early you can detect the sex of your baby using an ultrasound. Everything from gestational age to the thickness of the motherâs abdominal wall can affect the amount of time that this process will take. An ultrasound is, after the 20th week of pregnancy, generally more than 90% accurate at being able to tell a babyâs sex.