بررسي باكتريولوژيك عفونت مزمن گوش مياني

Bacteriology of Chronic Otits Media

Chronic Otitis Media( COM). is an inflammatory process within the middle ear cleft associated with irreversible tissue pathology. It may be active with continous suppurative or inactive with sequelae of a "burnt out" infecion. In order to determine the causative agents, aspiration of the middle ear exudate through the open perforation was performed in 88 petients with active chronic otitis media (8-70 years old). 116 isolates were recovered out of which too specimen (95%) were aerobically cultivable and the rest (5%)were negative. The most common isolated bacteria were Staphylococcuc Aureus, Pseudomonas Aeroginosa and other Pseudomonas spp, Enteric gram negative bacilli specially Proteus spp and Klebsiella Pneumoniae. Antibacterial susceptibility tests showed that most of the isolates were resistant to current antibiotics which are recommended in treatment of COM. 42% of the isolates were able to produce beta-lactamase enzyme which was that examined by lodometric method.