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Amniotic fluid analysis. Its role in maternal neonatal infection
Indirect evidence suggests that amnionitis, in the absence of maternal symptoms, contributes to neonatal morbidity. The incidence is unknown because diagnostic techniques are not available. A quantitative amniotic fluid analysis of bacteria, white blood cells, and lactic dehydrogenase levels was performed during labor among 28 patients considered to be a risk for infection. Thirteen of 16 patients with bacterial colony counts greater than 10(3)/ml subsequently developed maternal infection had a premature delivery, neonatal sepsis, or a combination of these factors. Maternal fever was a late sign in clinical infection and was frequently absent in cases of premature delivery associated with microbiologic evidence of amnionitis. Amniotic fluid analysis may be of value in diagnosing unrecognized amnionitis among patients delivering prematurely and those requiring nonelective cesarean section.
Indirect evidence suggests that amnionitis, in the absence of maternal symptoms, contributes to neonatal morbidity. The incidence is unknown because diagnostic techniques are not available. A quantitative amniotic fluid analysis of bacteria, white blood cells, and lactic dehydrogenase levels was performed during labor among 28 patients considered to be a risk for infection. Thirteen of 16 patients with bacterial colony counts greater than 10(3)/ml subsequently developed maternal infection had a premature delivery, neonatal sepsis, or a combination of these factors. Maternal fever was a late sign in clinical infection and was frequently absent in cases of premature delivery associated with microbiologic evidence of amnionitis. Amniotic fluid analysis may be of value in diagnosing unrecognized amnionitis among patients delivering prematurely and those requiring nonelective cesarean section.