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.
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Vesicular - Normal Vesicular breath sounds are soft and low pitched with a rustling quality during inspiration and are even softer during expiration. These are the most commonly auscultated breath sounds, normally heard over most of the lung surface.
Bronchovesicular breath sounds consist of a full inspiratory phase with a shortened and softer expiratory phase. They are normally heard over the hilar region in most resting animals and should be quieter than the tracheal breath sounds.
Abnormal breath sounds can indicate a lung problem, such as an obstruction, inflammation, or infection. Learn about breath sounds and what they may mean. Pneumonia, heart failure, and asthma can Author: April Kahn.