Normal middle ear pressure with normal compliance is a Type ____________ tympanogram.

A Type A tympanogram indicates normal middle ear pressure with normal compliance. This type of tympanogram is characterized by a peak that occurs at or near atmospheric pressure, showing that the eardrum is moving optimally and that the middle ear system is functioning effectively. It suggests that there is no significant blockage or dysfunction within the middle ear, allowing sound to be transmitted properly.

In the context of tympanometry, Type A tympanograms reflect healthy middle ear dynamics, confirming that the tympanic membrane (eardrum) can vibrate freely in response to sound. This is crucial for efficient hearing, as any alterations in pressure or compliance could indicate various middle ear problems, such as fluid buildup, Eustachian tube dysfunction, or other pathologies.

The other types of tympanograms, such as Type B or Type C, represent different conditions that indicate issues with the middle ear. Type B typically suggests fluid in the middle ear or a perforated eardrum, while Type C indicates negative pressure in the middle ear, which could occur due to Eustachian tube dysfunction. Type As further indicates a shallow compliance peak, which may represent stiff middle ear systems.