[Microflora of the gallbladder in chronic calculous cholecystitis and its antibiotic sensitivity]

The microflora of 100 gallbladders removed from patients operated for chronic calculous cholecystitis was studied. Eighty-two of them contained microorganisms: monocultures and associations in 42 and 40 gallbladders, respectively. The associations included 2 (22 per cent) or 3-6 microbial species (18 per cent). Gram-positive bacteria predominated in the microflora (72.9 per cent): staphylococci (30 per cent), bifid and lactic acid bacteria (26 per cent), and spore-forming aerobic bacteria (21 per cent). The number of gram-negative bacteria amounted to 27.1 per cent. Among them the number of E. coli amounted to 21 per cent. On the whole the isolates were sensitive to neomycin, monomycin, carbenicillin and tetracycline. 91.1 per cent of the strains were sensitive to 2-18 antibiotics.