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During the period from January 1 to March 31, 1969, lochia was taken for the bacteriological culture and sensitivity test from 107 patient of normal afebrile postpartum women, aged 20 to 40, who had given birth vaginally at the Dept. of Obstetrics and Gynecology, Naotional Medical Center, Seoul. The specimens were taken aseptically from cervical canal or posterior vaginal fornix within postpartum 12 to 72 hours (Av. 39 hrs.) and then cultured on blood agar or thioglycollate media under aerobic and anaerobic conditions. With cultured several organisms, sensitivity test was done by Disk method to some current antibiotics. The results were obtained as follows: 1. Among 107 cases, culture was positive in 101 cases (94.3%) and sterile cultrue(negative cultrue) was in 6 cases (5.7%). Among the above 101 cases of positive culture, mixed culture of two different bacteria were found the most commonly at the same time in 36 cases, pure culture in 28 cases, mixed culture of three bacteria in 18 cased, four bacteria in 16 cases and five bacteria in three cases. Among the above 28 cases of pure culture of Lactobacillus was sepcies found. 2. the cultured organisms and its incidence in order were as follows; Unidentified anaerobic gram negative bacilli in 40.2%, Streptococci (anaerobic, beta hemolytic and viridans) in 33.7%, Staphylococci (aureus and edpidermis) and Lactobacillus species in 19.6%, respectively, E. coli in 18.7%, Bacteroides in 15.9%, Micrococcus species and Corynebacterium species including Diphtheroids in 14.0%, respectively, Enterococcus in 10.1%, Coliform bacilli and Hemophilus species in 6.5%, respectively, Yeast like cells in 4.7%, Unidentified gram positive bacilli and Clostridium species in 3.7%, respectively, Neisseria species in 1.9%, Bacterium anitratum, Proteus miarbilis, Klebsilia aerogenes and Providence group in 0.9%, respectively. 3. Relationships between the distribution of cultured organisms and several factors such as age, parity, mode of delivery and presence or absence of episiotomy or cervical repair, were analysed. However no remarkable difference in distribution of cultured organisms could be found. 4. The results of sensitivity test (as to the sensitive antibiotics) were as follows; a) E. coli was sensitive to Neomycin, Ampicillin and Colistin in all cases. Most of them were sensitive to Chloramphenicol and Streptomycin. Generally, it was moderately sensitive to Kanamycin. b) Staphylococcus aureus was sensitive to Methicillin and Cloxacillin in all cases. Most of them were sensitive but part of them were resistnat to Leucomycin and Erythromycin. c) Most of Enterococci were snesitive to Ampicillin and Erythromycin but part of them were sensitive or resistant to Chloramphenicol and Neomycin. d) Coliform bacilli were sensitive to Neomycin in all cases and most of them were sensitive to Chloramphenicol, Streptomycin, Colistin and Ampicillin. They were moderately sensitive to Kanamycin. e) Clostridium species were sensitive to Tetracycline and Erythromycin in all cases.
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