SH-SDU Shandong Endometriosis Reproductive Cohort

The numerator is number of live births from fresh or frozen embryo transfer in one ovarian stimulation cycle. More than one live birth is considered as one live birth. Denominator is defined as patients who have undergone oocyte retrieval and have either achieved at least one live birth or who have no surplus embryos.

Clinical pregnancy is defined as visible intra-uterine pregnancy or extra-uterine pregnancy.

Miscarriages mean pregnancy loss before 28 gestational weeks. Clinical pregnancy loss ≤ 12 gestational weeks is an early miscarriage, and pregnancy loss between 12 and 28 gestational weeks is a late miscarriage.

Ectopic pregnancy is defined as the presence of extra-uterine gestational sacs or masses.

The number of biochemical pregnancy cycles divided by the number of transplantation cycles

Natural termination of clinical pregnancy or therapeutic induction of labor before 28 weeks of gestation

A baby without vital signs is delivered at 28 weeks or more of gestation

Delivery before 37 weeks of gestation

Abnormalities of glucose metabolism of different degrees that first occur and are discovered during pregnancy

After 20 weeks of gestation, if a pregnant woman has a systolic blood pressure of ≥140 mmHg and/or a diastolic blood pressure of ≥90 mmHg, accompanied by any one of the following: urine protein quantification ≥0.3 g/24 h, or the urine protein/creatinine ratio ≥0.3, or random urine protein ≥(+)(the examination method when protein quantification is not performed unconditionally); There is no proteinuria but any one of the following organs or systems is involved: important organs such as the heart, lungs, liver, and kidneys, or abnormal changes in the blood system, digestive system, and nervous system, or the placenta and fetus are involved, etc.

Hypertension first occurred after 20 weeks of pregnancy, with a systolic blood pressure of ≥140 mmHg (1 mmHg=0.133 kPa) and/or a diastolic blood pressure of ≥90 mmHg; The urine protein test was negative

It refers to the spontaneous rupture of the fetal membranes before labor. According to the gestational age at which it occurs, it is divided into full-term fetal membranes and preterm premature rupture of fetal membranes

The lower edge of the placenta is adjacent to or covers the internal OS of the cervix

The placenta in its normal position partially or completely separates from the uterine wall before the fetus is delivered

Within 24 hours after the delivery of the fetus, the amount of blood loss in parturients with vaginal delivery is ≥500 ml, the amount of blood loss in parturients with cesarean section is ≥ 1,000 ml, or there are symptoms or signs of hypovolume after blood loss

Infants with vital signs at birth die within 28 days after birth