Use of noninvasive ventilation can result in parotitis.

Conditions of increased oral pressure:

(1) noninvasive mask ventilation

(2) CPAP


The increased air pressure can result in air entering Stensen's duct and insufflating one or both parotid glands.


The swelling of the parotid gland may be sterile or become infected.


Risk factors for parotitis associated with salivary stasis and/or increased viscosity:

(1) advanced age

(2) dehydration

(3) lack of salivary gland stimulation


Serum amylase levels may be increased.

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