The worldwide tendency is to prevent the birth of twins, triplets or more. This is due to the significant rise in perinatal mortality and risks to the health of newborns, resulting from preterm deliveries, mainly extremely premature babies (under 32 weeks gestation). In the chapter “Exercise of probability of birth”, we can appreciate the the chance of birth and the risk of multiple gestation by transferring 1, 2 or 3 embryos.
Very often, twin deliveries result in healthy children, who are a celebration for the whole family; however, multiple deliveries mainly have two negative effects. As it can be seen in Figure 14, the so-called perinatal mortality rises, which is the sum of the fetuses that die inside the uterus, and others that die within the first week after birth. Moreover, premature deliveries (under 37 gestational weeks), and extremely premature (under 32 gestational weeks) increase, which bring along numerous problems associated to immaturity at birth.
Figure 14. Prematurity and perinatal mortality according to gestational order, 2020
The Latin American Registry of Assisted Reproduction (RLA) thanks the 204 institutions accredited by REDLARA which, every year, report their data to RLA.
This voluntary and rigorous contribution makes it possible to generate a powerful database, which helps doctors and patients take decisions based on the best existing regional evidence.
This educational portal is the result of a collaborative activity between the Latin American Network of Assisted Reproduction (REDLARA), and University Diego Portales from Chile, which allow the link between the reproductive science and technology advances with the needs of people suffering from infertility and other forms of reproductive impairments.
We thank Dr. Ariel Ahumanda and Dr. Gustavo Martínez from Argentina for: images and videos of spontaneous in vitro fertilization, ICSI and PGT,
Dr. Roger Molinas from Paraguay for: videos of follicular aspiration and embryo transfer,
Dr. Javier Crosby from Chile for: images of different stages of in vitro embryo development,
Dr. Yasuyuki Mio from Japan for his video of in vitro embryo development.
We especially thank the industry for providing the financial support, which is so necessary to keep the Latin American registry as a pillar of this international cooperation, which today includes 16 countries and more than 200 collaborative institutions, from Mexico in the north to Chile in the far south.
