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Early Path Medical Consultation Services Pathology Services Working for Safer Pregnancies |
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Intrauterine Infection & Acute Inflammation Intrauterine infection during pregnancy can follow ascending, hematogenous (from the maternal blood stream), transabdominal or transfallopian pathways. The most common route is ascent from the perineum, cervix and vagina. The causative organisms may be of low virulence, part of these regions' normal flora or obvious pathogens (e.g., E.coli). The infectious agent may either colonize the extraplacental membranes or cross the intact or ruptured membranes into the amniotic fluid. The extraplacental membranes most often rupture because they are already infected. However, loss of the mechanical barrier of the amnion, chorion and decidua to ascending organisms and reduction of the bacteria killing capacity of the amniotic fluid may certainly facilitate subsequent ascent of additional numbers and/or types of microrganisms. If inflamed membranes are cultured for aerobic and anaerobic bacteria (Mycoplasma or Ureaplasma), organisms will be recovered in 75% of cases; many consist of mixed infections. Fustobacterium is an anaerobic filamentous bacterium that results in necrosis (cell death) of the amnion membrane and is often associated with preterm delivery. Group B Streptococcus may result in "clouds" of bacteria without an appropriate maternal inflammatory response, especially in cases of chronic carriers. Diverse Candida species may also be pathogens. Acute Inflammation Case Reports (coming soon)
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