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.
The doctor can also take a picture of your lungs using a chest x-ray or CAT scan to look for abnormalities in the structure of the lungs, such as an infection like pneumonia. However, these two tests can still miss important problems. For this reason, a breathing test, called spirometry, is often done to further evaluate the health of the lungs. Spirometry can tell you how much air is going into the lungs and how rapidly air is inhaled and exhaled in the lungs (airflow).