Table 3.

pregnancy complications

Data on current pregnancy	Singleton	Twins	Triplets/quadruplets
Adverse outcome
Selective feticide due to multiple pregnancy	0%	0%	44%
Feticide due to malformations of the fetus	0%	4.5%	0%
Termination of pregnancy due to severe maternal complications	0%	0%	11.1%
IUFD	3.2%	9%	11.1%
Perinatal death due to severe prematurity	3.2%	2.3%	22.2%
Death due to severe malformations during childhood	1.6%	0%	0%
Hypertension in pregnancy
Pre-existing hypertension	1.6%	2.3%	0%
Pregnancy-induced hypertension	9.7%	2.3%	11.1%
Preeclampsia	16.1%	22.7%	22.2%
HELLP	1.6%	2.3%	0%
Delivery (weeks of gestation)	Mean 36.9 Range 16–41 SD 4.9	Mean 34.9 Range 21–40 SD 4.5	Mean 28 Range 16–37 SD 6.62
Premature delivery	34.5%	63.4%	88.9%
34 + 0 to 37 + 0	13.8%	39%	22.2%
< 34 + 0	20.7%	24.4%	66.7%
Antenatal corticosteroids	16.1%	28.6%	44.4%
Cervical cerclage	8%	4.5%	11.1%
Pessary	1.6%	2.3%	33.3%
Progesterone	1.6%	4.5%	11.1%
Perinatal death due to severe prematurity	1.6%	4.5%	22.2%
Mode of delivery (live births)
Vaginal delivery	8.1%	9.3%	0%
Vacuum extraction delivery	4.8%	2.3%	0%
Caesarean section	83.9%	88.4%	100%
Planned	35.5%	20.9%	0%
Unplanned or emergency	49%	67.4%	100%
Stillbirth	3.2%	2.3%	33.3%
Peripartum hemorrhage	Mean 683 ml Range 200–3000 ml SD 535	Mean 782 ml Range 300–3000 ml SD 606	Mean 1214 ml Range 400–2500 ml SD 848
> 500 ml blood loss	25%	29%	28.6%
> 1500 ml blood loss	9%	12.9%	28.6%
Total > 500 ml blood loss	34%	41.9%	57.2%
Placental retention > 24 SSW	18.2%	25.8%	28.6%
Placental abruption	0%	3.2%	0%

IUFD spontaneous intrauterine fetal death (> 20 weeks of pregnancy), HELLP Hemolysis elevated liver enzymes low platelet count, SD standard deviation