April 08, 2014

Multiple pregnancy (Twins)

When more than one fetus simultaneously develops in the uterus, it is called multiple pregnancy. Simultaneous development of two fetuses (twins) is the commonest. Although rare, development of three fetuses (triplets), four fetuses (quadraplets), five fetuses (quintuplets) or six fetuses (sextuplets) may also occur.

                                                  Twins 

 Definition - 

 Simultaneous development of two fetuses in the uterus is the commonest variety of multiple pregnancy.
Varieties -

 i) Dizygotic twins - It is the commonest (2/3) and result from the fertilization of two ova.

 ii) Monozygotic twins - It is rare (1/3) result from the fertilization of a single ovum.
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