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[Clinical analysis of 68 cases of sepsis during pregnancy and the postpartum period].

Objective: To investigate the clinical features, etiology, and prognosis of sepsis during pregnancy and the postpartum period. Methods: Sixty-eight pregnant women with maternal sepsis treated in Peking Union Medical College Hospital from January 1997 to December 2019 were collected, and divided into obstetric infection group (30 cases) and non-obstetric infection group (38 cases) according to different infection sources. Clinical manifestations, types of infection sources, microbiological characteristics, treatment and outcomes were studied and analyzed. Results: (1) General conditions and clinical features: sepsis occurrence rate was 57% (39/68) and 43% (29/68) in prenatal and postpartum period, repectively. Statistical analysis showed that incidence of respiratory, renal, liver and coagulation dysfunction in non-obstetric infection group were significantly higher than those in obstetric infection group, and multiple organ dysfunction, cardiac arrest and blood lactate≥4 mmol/L were more common (all P <0.05). Sequential organ failure score in non-obstetric infection group was also significantly higher than that in obstetric infection group ( P <0.05). (2) Types of infection sources and microbiological characteristics: the most common maternal sepsis was genital tract sepsis (37%, 25/68). Chorioamnionitis was the most common cause in obstetric sepsis (40%, 12/30), while intra-abdominal infection was the most common cause in non-obstetric sepsis (34%, 13/38). Thirty-seven patients (54%, 37/68) were diagnosed as bloodstream infection (BSI). Gram-negative bacteremia accounted for 70% (26/37), the most common pathogen of which was Escherichia coli. BSI was most commonly secondary to a genital tract infection (65%, 17/26). (3) Treatment: the ICU hospitalization rates and the utilization rate of mechanical ventilation and vasoactive agents in non-obstetric group were higher than those in obstetric group with significant differences (all P <0.05). Thirty-two patients (47%, 32/68) underwent surgery to remove the infection sources, including 5 cases of hysterectomy. (4) Prognosis: the case fatality rate of maternal sepsis was 19% (13/68), which was significantly higher in the non-obstetric infection group (29%,11/38) compared with the obstetric infection group (7%,2/30; P =0.020). The time from diagnosis of sepsis to termination of pregnancy was (5.5±8.6) days in prenatal women, and time in obstetric infection group [(1.9±2.2) days] was significantly less than that of non-obstetric infection group [(7.7±10.3) days, P =0.029]. Adverse pregnancy outcomes were higher in the first and second trimester (72%, 18/25) than in the third trimester (21%, 3/14), and the difference was statistically significant ( P =0.002). Conclusions: Sepsis during pregnancy and the postpartum period is a potentially life-threatening disease. Pregnant women with non-obstetric sepsis have more complications, more serious condition and worse prognosis than those with obstetric infection. Timely detection of risk factors, early identification and active treatment are helpful to improve maternal and fetal prognosis.

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