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...
1 Echocardiogram (EKG or ECG): Also known as a cardiac echo, this test uses sound waves to take pictures of your heart.  Holter monitor: This monitor is worn for at least 24 hours while you go about your normal activities. It allows your doctor to track changes in your heartâs rhythm throughout the day.