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Microbiology and clinical outcomes of puerperal sepsis: a prospective cohort study.

The objectives of this study were to determine the identity and antibacterial susceptibility profiles of bacteria colonising the female genital tract and blood stream and their association with clinical outcomes in women with puerperal sepsis. A prospective descriptive cohort study was conducted at two tertiary hospitals in Zimbabwe. Endocervical swabs and blood were collected for culture and susceptibility testing from 151 consecutive women who met the World Health Organisation criteria for puerperal sepsis. Medical records were reviewed for assessment of clinical outcomes. The commonest bacterial isolates were Escherichia coli (30.6%) and Klebsiella pneumoniae (15.3%). Multidrug-resistant organisms (MDRO) accounted for 10.9% of all isolates. MDRO were associated with prolonged hospital stay, 23.0 days compared to 10.5 days in women without MDRO (p = .009). Puerperal sepsis case fatality rate was 7.3%. Clinical culture surveillance to monitor epidemiologic trends, identify MDRO, robust infection control strategies and emphasis on rational drug use are recommended. Impact statement What is already known? Puerperal sepsis is often a polymicrobial infection. Escherichia coli has been reported as a common cause of severe maternal sepsis originating from the genital tract. Other bacteria include Group A Streptococcus, S. aureus, Streptococcus spp. Klebsiellae spp, Pseudomonas spp. and anaerobes. What does this study add? This study confirms Escherichia coli as the commonest cause of sepsis in Harare. There is high level resistance to first-line antibiotic regimens on most Gram-negative isolates from the endocervix among women with puerperal sepsis. Emerging resistance to carbapenems is demonstrated. MDRO significantly increased length of hospital stay, and there was a clinically important trend towards higher rates of pelvic abscess, septic shock, death, need for laparotomy and ICU admission specific to puerperal sepsis. What are the implications for clinical practice and further research? Clinical culture surveillance to monitor epidemiologic trends in conjunction with robust infection control strategies and rational drug use may assist in prevention of community acquired and nosocomial multidrug-resistant infections.

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