Is there a third type of twin? Some researchers speculate about ... called superfetation allows a second egg to be fertilized ...

The two most common types of twins are dizygotic (fraternal) and monozygotic (identical). ... Research shows that this happens in up to 1 in 200 twin pregnancies.

The results indicated that women with twin pregnancies experienced a higher rate of readmissions for cardiovascular disease within a year of giving birth, at 1,105.4 per 100,000 deliveries ...

Today, medical science helps us understand the different types of twin pregnancies and the unique care they need. One special kind is called monochorionic-diamniotic (MCDA) twins.

Fraternal or dizygotic twins develop from two different eggs fertilized by separate sperm; they generally share about 50 percent of their genes. Therefore, fraternal twins are essentially like ...

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These twins share one placenta and one amniotic sac, and are the rarest type of twins, with only one in five twin pregnancies falling into this category. As the twins share everything, it means ...

The readmission rate for any type of cardiovascular disease – including heart attack, heart failure or stroke – for mothers of twins was 1,105 per 100,000 deliveries.