Children born through ivf
treatments have no greater risk of birth defects than children conceived naturally. However, children conceived from sperm injection into the egg (ICSI) have a higher incidence of chromosomal disorders (0.8%) compared to the 0.2% incidence in the general population.
The chance of a multi-embryo pregnancy is higher and often requires making a reduction of the embryos.
The rate of pregnancy loss or abortion stands at 20% similarly to in the general population, and is directly related to the mother's age.
The risk of ectopic pregnancy increases to 4% after embryo transfer, as compared with 1% in the general population.
Multi-Embryo pregnancy refers to a pregnancy where two embryos or more are found in the uterus. In the general population, this phenomenon occurs in 1% of all pregnancies. The use of medication for inducing ovulation and the return of several embryos to the uterus increases the rate of multiple pregnancies up to 30%. The risks of multi-embryo pregnancy primarily include premature birth, gestational diabetes, high blood pressure, and pre-eclampsia.
To increase the chances of a pregnancy's success, doctors often employ embryo reduction methods. Reducing the number of embryos, generally to 2 per pregnancy, reduces the risk to the mother and remaining embryos. However, it should be noted that reduction also carries the risk of miscarriage.