Abstract
To investigate the safety and effectiveness of extracorporeal membrane oxygenation (ECMO) in emergency treatment of critically ill pregnant women. Clinical data of 8 pregnant women with severe cardiopulmonary dysfunction during the perinatal period treated by ECMO in the department of intensive care unit (ICU) of Nanjing Drum Tower Hospital, the Affiliated Hospital to Nanjing University Medical School from September 2017 to November 2020 were retrospectively analyzed. For the 8 pregnant women, the mean age was (32.5±6.3) years old. Body weight was (73.5±8.1) kg. Gestational age was (31.0±4.4) weeks. Acute physiology and chronic health evaluation II (APACHE II) score was 13.0±6.6, and sequential organ failure assessment (SOFA) score was 8.3±3.8. Among them, 5 pregnant women suffered from severe pneumonia and were treated with venous-venous ECMO (VV-ECMO). Another 3 pregnant women with heart failure underwent venous-arterial ECMO (VA-ECMO). The initial ECMO flow rate was set to 2.0-3.0 L/min. Then the highest flow rate was (3.1±0.6) L/min, and the average ECMO running time was (174±36) hours. The length of ICU stay was (16.0±5.4) days. Six pregnant women (5 with severe pneumonia and 1 with peripartum cardiomyopathy) successfully evacuated from ECMO and survived. Two pregnant women with pulmonary hypertension showed poor prognosis. In total, seven babies survived. Two of them were delivered after ECMO evacution, and one underwent emergency cesarean section with ECMO support. In another case, the fetus could not be delivered due to under-gestational weeks. During this period, there were no serious bleeding complications. One pregnant woman developed heparin-induced thrombocytopenia and thrombosis (HITT), then she received another anticoagulant treatment. One pregnant woman got sequential anticoagulation therapy for 3 months on account of thrombosis in the puncture vessel. ECMO has played an active role in the rescue of critically ill pregnant women. For those with reversible severe cardiopulmonary dysfunction, it is necessary to evaluate the application of ECMO as early as possible to improve the survival rate of mothers and infants.
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