However, if the Staph bacteremia was considered to be a monomicrobic
infection or a potential contaminant and the patient was on vancomycin, the blood culture isolate would be rapidly identified.
Modern infection diseases in obstetric and gynecologic patients are caused by autoflora with the predominance of mixed (anaerobic and anaerobic/aerobic) suppuration (Barashnev, Antonov and Kudashov, 1994), and not monomicrobic
(aerobic or anaerobic) one.
Following Kass criteria, significant monomicrobic
bacteriuria was defined as culture of a single bacterial species from the urine samples at a concentration of > [10.sup.5] CFU/ml (12,13) Only a single positive culture per patient was included in the study.
Columbia agar base, supplemented with 5% (vol/vol) sheep blood, and MacConkey agar plates showed a monomicrobic
culture constituted by catalase-positive and oxidase-positive gram-negative rods that did not grow under anaerobic conditions.
The organisms encountered most frequently are Enterococcus, Escherichia coli, and Klebsiella a pneumoniae.[11,12] It is postulated that hepatic cysts, unlike renal cysts, become infected secondary to bacteremia, and the infection is usually monomicrobic
.[11,12] The infection, however, may be unsuspected initially.