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[Antibiotic prevention in hysterectomy. Effectivity of a single preoperative ceftriaxon dose].

In a prospective study, 50 women patients were given 2 g Ceftriaxon (Rocephin) as a short infusion before performing hysterectomy. A control group of 50 patients remained without any antibiotic treatment. In 31 patients, the concentration of Ceftriaxon in the serum and tissue was determined at the time the uterus was removed. Due to the long half-life of Ceftriaxon (8 hours), high serum and tissue levels were found for a period of many hours. After 4-5 hours, the serum level was still 100 micrograms/ml, whereas the concentration in the endometrium, myometrium and in the salpinges were 21 micrograms/g, 24 micrograms/g and 31 micrograms/g, respectively. Due to these long-lasting serum and tissue levels, the protective effect against infections was also very high. 15 infections in the control group are contrasted by one infection only in the treated group. The efficacy of the prophylaxis is objectively assessed by measuring the temperature curve and by determining the number and the spectrum of the postoperatively isolated germs. The germs isolated in the treated group are exclusively such germs which are resistant to Ceftriaxon (enterococci) or which are only moderately sensitive to Ceftriaxon, such as Bacteroides.