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To utilize noninvasive collection of amniotic fluid in the setting of preterm premature rupture of membranes (PPROMs) to report the time concentration profile of azithromycin in amniotic fluid over 7 days from a single dose, and evaluate the correlation between azithromycin concentration and inflammatory markers in amniotic fluid. Prospective cohort study of five pregnant patients admitted with PPROMs and treated with a single 1 g oral azithromycin dose. Amniotic fluid was collected from pads and used to quantify azithromycin concentration as well as TNFa, IL‐1a, IL‐1b, IL‐6, IL‐8, and IL‐10 concentrations. Primary outcome was time/concentration profile of azithromycin in amniotic fluid. Secondary outcome included correlation between azithromycin concentration and cytokine concentrations. Five patients were enrolled. Mean gestational age on admission with PPROM was 27.5 ± 2.3 weeks with a median latency of 7 days (interquartile range [IQR] = 4–13). A median of two samples/day (IQR = 1–3) were collected per participant. Azithromycin was quantified in duplicate; intra‐assay coefficient of variation was 17%. Azithromycin concentration was less than 60 ng/ml after day 3. Azithromycin concentration was positively correlated with IL‐8 (r = 0.38, p = 0.03), IL1a (r = 0.39, p = 0.03), and IL‐1b (r = 0.36, p = 0.04) in amniotic fluid. Azithromycin is detectable in amniotic fluid over 7 days from a single 1 g maternal dose, however, it is not sustained over the range of minimum inhibitory concentration for common genitourinary flora. Based on correlation with specific cytokines, azithromycin penetration in amniotic fluid may relate to maternal monocyte concentration in amniotic fluid in the setting of PPROM.

Extracorporeal membrane oxygenation (ECMO) is used to provide acute respiratory and/or hemodynamic support to patients with severe, refractory respiratory failure. Phrenic nerve injury with subsequent hemidiaphragm paralysis should be included in the differential diagnosis of pregnant women with persistent hypoxia after ECMO cannulation. Phrenic nerve injury with subsequent hemidiaphragm paralysis should be included in the differential diagnosis of pregnant women with persistent hypoxia after extracorporeal membrane oxygenation (ECMO) cannulation.

ObjectiveTo compare the early-onset sepsis (EOS) calculator recommendations for infants born to mothers with clinical chorioamnionitis with those made by the Triple I classification.Study designRetrospective analysis of chorioamnionitis-exposed neonates ≥35 weeks. EOS risk was calculated with baseline risks of 0.5/1000 and 4/1000. Mothers were retrospectively categorized using the Triple I classification. Calculator recommendations were compared with the Triple I classification recommendations.ResultsWe included 687 chorioamnionitis-exposed neonates. With a baseline risk of 0.5/1000, the calculator recommended no evaluation in 68.4% of infants of mothers with confirmed Triple I. With a baseline risk of 4/1000, 62.3% of infants of mothers with confirmed Triple I and 57.1% of infants born to mothers who did not meet fever criteria would have received evaluation.ConclusionsThe EOS calculator with either baseline risk does not recommend evaluation in a large number of infants born to mothers with confirmed Triple I.