For each aspect A–E, of multiple pregnancy (twins, triplets etc), select the most appropriate option from the following list of obstetrical terms.
1. Individual fetal mass.
2. Total mass of all fetuses.
3. Fetal prematurity.
4. Neonatal mortality.
5. Placental adequacy.
6. Assisted reproduction.
7. Perinatal mortality.
A. A mother with multiple pregnancies is more likely to have an inappropriately early (premature) onset of labour.
B. Since there is always a risk of loss of the fetus in early pregnancy, starting with two or more embryos increases the chance of at least one reaching maturity.
C. Multiple pregnancies decrease the likelihood of delayed labour due to inadequate size of the birth canal.
D. Multiple births are associated with an increased risk of neonatal jaundice and, more seriously, difficulty in overcoming surface tension forces during inspiration (respiratory distress syndrome).
E. The chances of surviving problems in the weeks before and after birth are less for a twin than a single birth, less still for a triplet and even less for a quadruplet.