Safety of Laparoscopic Surgery for Benign Diseases during Pregnancy: A Nationwide Retrospective Cohort Study.

To compare fetal, maternal, and operative outcomes of laparoscopic surgery versus laparotomy for major benign diseases including appendicitis, cholecystitis, adnexal masses, and uterine myoma during pregnancy. Retrospective cohort study (Canadian Task Force classification II-2). The Diagnosis Procedure Combination database, a national inpatient database for acute care inpatients in Japan. Eligible patients (n = 6018) underwent abdominal surgery (4047 laparotomy and 1971 laparoscopy patients) from July 2010 through March 2016. The 2 groups were compared using propensity score matching analysis. The primary outcome was fetal adverse events, including abortion or stillbirth within 7 days after surgery and premature delivery during hospitalization. Secondary outcomes were operative time, blood transfusion, and length of hospital stay after surgery. Propensity score matching created 740 pairs. Significant difference was observed in the primary outcome between propensity score-matched patients in the laparotomy versus laparoscopy group (1.8% vs .41%, respectively; risk difference, -1.4%; 95% confidence interval, -2.4 to -.30; p = .01). Compared with the laparotomy group, the laparoscopy group had a significantly lower incidence of blood transfusion (2.3% vs .41%, p = .002), shorter operative time (115 vs 95 minutes, p <.001), and shorter hospital stay (9.2 vs 5.9 days, p <.001). Our current study using propensity score matching suggests the advantages of laparoscopic surgery for benign diseases compared with laparotomy because laparoscopic surgery had advantages in short-term fetal adverse events, incidence of blood transfusion, operative time, and hospital stay.

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