Sentences with phrase «most quadruplets»
Not exact matches
On average most single pregnancies last 39 weeks, twin pregnancies 36 weeks, triplets 32 weeks, quadruplets 30 weeks, and quintuplets 29 weeks.
http://americanpregnancy.org/
The most common form of human multiple birth is twins (two babies), but cases of triplets (three), quadruplets (four), quintuplets (five), sextuplets (six), septuplets (seven), and octuplets (eight) have all been recorded with all siblings being born alive.
In recent years, doctors have cut the number of implantations down to two in most cases, reducing the incidence of triplets and quadruplets, but increasing the rate of twin births.