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...
They need to hear the heart beat to make sure you are healthy. If you have an irregular heart beat that means something is wrong. They also use a stethoscope to listen to your breathing (like if you have labored breathing or wheezing) and to listen to your stomach and organs move and pump.