Incidence and Bacteriology of Acute Suppurative Parotitis in Patients Managed by Non Invasive Ventilation.

Abstract

Background: acute parotitis is possible proposed sequel of Noninvasive ventilation due to the effect of intraoral positive pressure with subsequent jeopardy of the salivary flow from the Stensen duct. However the process is thought to be mutifactorial , compression of the external parotid duct by the oronasal mask, advanced age, dehydration, and oral intake restriction, all are involved in the ensuing salivary stasis. Methods: 675 patients diagnose as COVID 19  based upon   polymerase chain reaction who were admitted to the intensive care units for acute sever COVID 19 associated respiratory failure in whom non invasive ventilation was the selected intervention. suspected cases of parotid suppuration were subjected for Fine needle aspiration and  pus or seropurulent fluid  were obtained which is subjected to  aerobic and anaerobic cultures. Results:Eleven  patients developed an Acute suppurativeparotitis 1.63%. CPAP was more commonly used method for non invasive ventilation than BiPAP (54.66 % VS45.34). Parotitis was significantly more prevalent in patients treated with CPAP than BiPAP. Parotitis was more prevalent in patient using non invasive ventilation more than 10 days.  Conclusion:The recent  increase in the use of non invasive ventilation in the management of COVID 19 pandemic,  the incidence of suppurativeparotitisparotitis has increased which directly related to the time of non invasive ventilation.