Jenitar Sau Na’amoana, a 34-year-old Australian mother, gave birth to identical quadruplet girls last week at the Royal Brisbane and Women’s Hospital [1, 2].
The birth is medically significant because the quadruplets were naturally conceived and shared a single placenta. Gynecologists said such an occurrence happens in approximately one out of 15 million pregnancies [1, 5].
Na’amoana, who already had four children [3], delivered the four daughters via Caesarean section [5]. The babies, named Emily, Harriet, Alexa, and Catherine, were delivered at 28 weeks of pregnancy [4, 7].
Medical professionals said the event was extremely rare. While multiple births are not uncommon, the specific combination of identical quadruplets sharing one placenta without the aid of fertility treatments is an exceptional biological event [1, 5].
The infants were born in Queensland, Australia, where the hospital staff managed the high-risk delivery [1, 4]. The arrival of the four girls brings the total number of children in the Na’amoana household to eight [3].
Doctors said they monitored the pregnancy closely due to the complexities associated with a single placenta supporting four fetuses. Such pregnancies often carry higher risks of complications compared to fraternal multiples or those with separate placentas [1, 5].
“Identical quadruplets sharing one placenta occur about once in 15 million pregnancies.”
This case provides a rare clinical example of monozygotic quadruplets. Because the infants shared a single placenta, the pregnancy presented significant physiological challenges, as evidenced by the delivery at 28 weeks. The natural conception of such a rarity allows medical researchers to study the spontaneous splitting of a single fertilized egg into four distinct embryos.
