Abstract
Study objectiveTo determine the incidence of platelet count <100,000 mm−3 and percentage decrease in platelet count in the 72 h prior to delivery in women with preeclampsia. DesignRetrospective analysis of all women with preeclampsia who presented to the labor floor during calendar years 2012–2015. SettingAcademic medical center in New York City, United States. PatientsNine hundred and eighty four women with preeclampsia. MeasurementsData collected included all platelet counts recorded for a period of 72 h prior to delivery. Demographic data, laboratory data including complete blood count with platelets, blood urea nitrogen (BUN) Creatinine (CR), alanine aminotransferase (ALT), aspartate aminotransferase (AST), International Normalization Ratio (INR), and fibrinogen level, placement of neuraxial anesthesia and presence of epidural hematoma were also recorded. Main resultsWe identified 984 women with preeclampsia who had a median presenting platelet count of 195,000 mm−3 [151,000–233,000] and a final platelet count of 193,000 mm−3 [147,000–233,000]. Platelets did not decrease significantly over the 72 h with a median change of 0 [−8–5.0] and a median % change of 0 [−4.1–2.6]. 64 (6.5%) patients had a platelet count <100,000 mm−3, 21 (2.1%) had a platelet count <70,000 mm−3, and 5 (0.5%) had a platelet count <50,000 mm−3. Neuraxial anesthesia was placed in 40/64 women with platelet count <100,000 mm−3 and there were no cases of epidural or spinal hematoma. ConclusionsThese findings suggest that the incidence of thrombocytopenia in women with preeclampsia, especially platelet count <70,000 mm−3, is uncommon as is further decrease in platelet count after admission.
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