Arterial Blood Gases. Test Overview. An arterial blood gas (ABG) test measures the acidity (pH) and the levels of oxygen and carbon dioxide in the blood from an artery. This test is used to check how well your lungs are able to move oxygen into the blood and remove carbon dioxide from the blood.
Stethoscope it s the medical definition and terms used by doctors it s used to listen to your heart beat/ Rythem in heart beat and checking all is ok if you have a steady heart beat with them or if there is any signs of all of an irregular heartbeat...
How soon can my babyâs heart beat be heard? Prenatal Testing No comments Your babyâs heart begins beating around 22 days after conception, about 5 weeks after your last period. At this stage, the heart is too tiny to hear even with an ultrasound. However, it may be detected as early as 4 weeks after conception as a flickering in the chest via ultrasound. After 9 or 10 weeks of pregnancy, you might be able to hear your babyâs heartbeat. Typically your physician will use a Doppler instrument to do this. A Doppler instrument bounces sound waves off the fetal heart. These sounds return, affected by what they bounced off of, and the changes in these waves are picked up by the receiver in the Doppler.