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.
Vaginal ultrasound is able to detect the fetal pole at around six weeks. It should be noted, however, that every fetus develops differently, and it can be difficult to determine exactly the date of gestation, so some variation in the detection time is to be expected.hen the length of the embryo (also known as crown-rump length) is between 2 and 4 mm, the fetal pole can often be detected. In many cases, the fetal heartbeat is also visible at this point and can be detected as a flutter of the embryo that occurs at regular intervals.