Inspiration to expiration periods are equal. These are normal sounds in the mid-chest area or in the posterior chest between the scapula. They reflect a mixture of the pitch of the bronchial breath sounds heard near the trachea and the alveoli with the vesicular sound. They have an I:E ratio of 1:1.

After reviewing the sound, use the waveform and anatomy tabs for more information about this sound.

Position: Chest wall
Maneuver: Sitting
Chestpiece: Diaphragm