When the patient attempts to inhale and creates a large negative, the alveolar walls are forced to pop open and the crackle or the popping sound is created. When fluid or mucus collects in the peripheral portions of the lung, the alveoli collapse and the walls of the alveoli stick together. Or the sound that you hear when burning wood crackles and pops in a fireplace. Rales or crackles is a sound that is a discontinuous sound that is like a milkshake being sucked up through a straw, or popcorn popping in a popcorn popper, or like aerial bombs going off on the 4th of July, Thoracic Geography : sternocostal margins, over the verbral column between the scapulae.The Bronchovesicular Breath Sound has the following characteristics : Sound Characteristics : low pitched, soft rustling sound.Thoracic Geography : everywhere on the thoracic wall.An I:E Ratio : 1:0 or 1:1/4 with no pause in between inspiration & expiration.The Vesicular Breath Sound has the following characteristics : Thoracic Geography : over the manubrium of the sternum.An I:E Ratio : 1:1 or 1:1 1/4 with a pause in between inspiration & expiration.The Bronchial Breath Sound has the following characteristics : Indication : pneumonia, atelectasis, fluid infiltration.Sound Characteristics : high pitched, tubular, hollow sound.Thoracic Geography : over the trachea on the throat.An I:E Ratio : 1:1 with a pause in between inspiration & expiration.The Tracheal Breath Sound has the following characteristics : Click On The Link To Hear The Introductory Message

Stridor lung sounds