2. Incidence is increasing! Inc 65% for twins Inc 500% for triplets+ Multifetal gestation = only 3% of total births, but >20% of complications like PTD, LBW, VLBW babies
3. On average… Twins deliver @ 35+2wk Triplets deliver @ 32+1wk BUT The lowest mortality for: Twins = 38 wk Triplets = 35 wk
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7. Etiology: Dizygotic Ultrasound image of "twin-peak" sign showing an extension of placental tissue into the intertwin membrane, confirming dichorionic twinning. 2/3 of all twins Diamniotic/dichorionic