11. SUPERFECUNDATION:
It is the fertilization of the two different ova released in the same
cycle by separate act of the coitus within short period of time.
SUPERFETATION:
It is the fertilization of the two ova released in the different
menstrual cycles.
FOETUS PAPYRACEOUS
OR COMPRESSUS:
It is a state which occurs if one of the fetus dies early .The dead
fetus is compressed and flattened between membrane of the living
fetus and the uterine wall. It may occur in both the twins but more
commonly occurs in uniovular twins.
VANISHING TWINS:
Serial USG in multiple pregnancy since early gestation reveals
occasional death of one fetus and continuation of pregnancy with
the surviving one. The dead fetus if within 14 weeks simply
vanishes by reabsorption.
23. DELIVERY OF THE SECOND BABYDELIVERY OF THE SECOND BABY
Following the birth of the first baby, the lie, presentation, size and FHS of
second baby should be noted by abdominal examination.
Vaginal examination is done to confirm the presentation.