A USPS tracking number is a series of numerals allocated to individual parcels by the United States Postal Service to keep a record of where parcels are once they are shipped. A USPS tracking number consists of 22 numerals. Continue Reading.
How to listen to lung sounds. As he places the stethoscope on your back, the doctor says, Take a deep breath.. As an RT who has listened to the lung sounds of over 10,000 patients, I will tell you that having a patient take in a deep breath is not the ideal way to listen to lung sounds. Ideally, you want the patient to breath normal. The reason is you want to hear what a patent's lungs sound like when he is breathing normal.
Lung function tests, also called pulmonary (PULL-mun-ary) function tests, measure how well your lungs work. These tests are used to look for the cause of breathing problems, such as shortness of breath. Lung function tests measure: 1  How much air you can take into your lungs.2  How much air you can blow out of your lungs and how fast you can do it. 3  How well your lungs deliver oxygen to your blood. 4  The strength of your breathing muscles.hese tests are used to look for the cause of breathing problems, such as shortness of breath. Lung function tests measure: 1  How much air you can take into your lungs. 2  This amount is compared with that of other people your age, height, and sex. 3  This allows your doctor to see whether you're in the normal range.