**3.4 Cases of intrauterine fetal death of a twin**

The risk of intrauterine fetal death is higher in twin pregnancies compared to single pregnancies.

During the ultrasound examination between the 10th and 14th week, the rate of fetal loss in single pregnancies is 2%.

4% in dichorionic pregnancies 1% in monochorionic pregnancies Intrauterine death of both fetuses in the first trimester 1.6% in dichorionic twins 2% in monochorionic twins After the 14th week intrauterine death 2% in dichorionic twins 4% in monochorionic twins Intrauterine death of both 0.2% sequentially 6% in monochorionic twins Towards the end of pregnancy risk of endometrial death 1/3333 in the 33rd week of gestation 1/313 35 weeks of gestation 1/69 39 week of gestation 1st trimester of pregnancy vanishing twin common phenomenon no effect on

the other twin.

In pregnancies over 20 weeks of gestation there is intrauterine death of a twin 5% of all twin pregnancies.

In monochorionic twins acute hypotension is observed anemia ischemia leading to morbidity or death of the other.

In pregnancies over 26 weeks of gestation risk of imminent death of a twin so there is a need to organize the delivery.

After the death of one twin, administration of corticosteroids to the other twin.

Daily checkup of PT, PTT, Platelets and Fibrinogen is needed. Weekly checkup of biophysical profile and delivery at 37 weeks of gestation is recommended.

The prognosis of the survivor depends on the chorionicity and less on the gestational age at which the uterine death occurred [40–44].
