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.
Normal breath sounds vary according to the diameter of the airways. For example, anteriorly over the trachea, you should hear a loud, high-pitched, hollow sound called a bronchial breath sound. It is abnormal to hear this sound over peripheral lung tissue, that is, away from the trachea and the large bronchi.Over the mainstem bronchi, which are relatively large-diameter airways, you should hear medium-pitched and quieter sounds, called bronchovesicular breath sounds.t is abnormal to hear this sound over peripheral lung tissue, that is, away from the trachea and the large bronchi. Over the mainstem bronchi, which are relatively large-diameter airways, you should hear medium-pitched and quieter sounds, called bronchovesicular breath sounds.