Licht M R, Montague D K, Angermeier K W, Lakin M M
Department of Urology, Cleveland Clinic Foundation, Ohio, USA.
J Urol. 1995 Aug;154(2 Pt 1):387-90.
We determine the colony counts of organisms present on culture of clinically uninfected genitourinary prostheses at reoperation for reasons other than infection. These results served as control data for comparison with cultures from infected devices to determine the relative incidence of organisms involved.
Cultures were prospectively obtained from 65 penile prostheses and 22 artificial urinary sphincters. Patients were followed for a minimum of 12 months after reoperation or until development of infection (mean 27 months) at which time cultures were again obtained.
Low colony counts of Staphylococcus epidermidis were isolated from 40% of uninfected penile prostheses and 36% of artificial urinary sphincters. Only 3 of these devices later became infected (9%) and in all cases a higher colony count of another organism was found at explanation.
While Staph. epidermidis can cause prosthesis infection, low colony counts of the organism may not be associated with clinical infection. Therefore, the high incidence of infection attributed to this organism may be overestimated.
我们确定了因感染以外的原因再次手术时临床未感染的泌尿生殖假体培养物中存在的微生物菌落计数。这些结果作为对照数据，用于与感染装置的培养物进行比较，以确定相关微生物的相对发生率。
前瞻性地从65个阴茎假体和22个人造尿道括约肌中获取培养物。患者在再次手术后至少随访12个月，或直至感染发生（平均27个月），此时再次获取培养物。
40%的未感染阴茎假体和36%的人造尿道括约肌中分离出低菌落计数的表皮葡萄球菌。这些装置中只有3个后来发生感染（9%），并且在所有病例中，在解释时发现另一种微生物的菌落计数更高。
虽然表皮葡萄球菌可导致假体感染，但该微生物的低菌落计数可能与临床感染无关。因此，归因于该微生物的高感染发生率可能被高估了。
