“…[3][4][5] Malinow and Ostheimer 3 defined high-risk mothers as those with preeclampsia/eclampsia, diabetes, premature labor, multiple pregnancy, infectious disease, or existing neurological or cardiac disorders. Krilova's 4 definition included existing or pregnancy-related medical conditions that posed a likely risk to the fetus, preeclampsia, diabetes, placenta previa, multiple pregnancy, intrauterine growth retardation, oligohydramnios, and breech presentation. In this study, we used the term "high-risk delivery" as a concept, including the risks to the mother, fetus, and during delivery, with the definition based on the following six risk factors: 1) any form of hypertension during pregnancy (chronic hypertension, gestational hypertension, preeclampsia, superimposed preeclampsia, or eclampsia); 2) peripartum hemorrhage (placental abruption or placental abnormality); 3) multiple gestations; 4) underlying maternal disease (cardiovascular, renal, hematological, respiratory, neural, or infectious diseases); 5) cases in which emergency cesarean section was necessary (fetal distress, prolapse of the umbilical cord, or uterine rupture); and 6) advanced maternal age (35 years or older).…”