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.
A pulmonary function test (PFT) evaluates how well your lungs work. PFTs measure the amount of air in your lungs, how well the lungs move air in and out, and possibly how medications affect the lungs. Your doctor may send you for PFTs to diagnose a lung disease, measure the severity of lung problems, as a pre-operative work-up or to see if a treatment is working for your lung disease. A respiratory therapist will guide you through each test in a special exam room that has all the lung function measuring devices.