Pembanding pertumbuhan kembar
Masukkan taksiran berat kedua bayi kembar dari USG yang sama untuk melihat selisih berat dibanding batas NICE 20% dan ISUOG 25%, serta persentil tiap bayi.
How is the weight difference between twins calculated?
Take the larger estimated weight, subtract the smaller one and divide by the larger one. For example, 2000 g and 1700 g gives a difference of 15%.
What percentage difference between twins is a concern?
NICE recommends care with a fetal medicine specialist from a 20% difference. Twin specialists (ISUOG) use 25% or more as one of the signs of selective growth restriction, together with each twin's size and blood flow.
What is selective fetal growth restriction?
When one twin grows much less than the other because of how the placenta is shared or works. Specialists look at the weight difference, each twin's percentile and the blood flow in the cord together.
What are the signs of twin-to-twin transfusion syndrome?
On scans, a big difference in the fluid around each baby. At home, a bump that suddenly grows or feels very tight, or sudden breathlessness. Call your maternity unit now if you notice either.
Why are my twins measuring small on the chart?
The tool uses a chart made for single babies. Twins often measure a little smaller than single babies after about 30 weeks, and some twin teams use twin charts instead.
How often will I have scans with twins?
With two placentas, growth scans at 20, 24, 28, 32 and 36 weeks. With a shared placenta, every 2 weeks from 16 weeks, with growth checked from 20 weeks (NICE NG137).
Is my data saved?
No. Everything is worked out in your browser and nothing is stored or sent.