... trng hp Thiu i v thai quỏ ngy sinh, thai suy dinh dng, t vong s sinh: Thai suy dinh dng chim 17,1%, thai quỏ ngy sinh chim t l 19,8% v t vong s sinh 1,4% KT LUN T l thiu i thai t 28 tun tr lờn ... 2.1% Mt s yu t liờn quan thng gp tui thai t 28 tun tr lờn b thiu i bao gm: Do thai kộm phỏt trin t cung cú 10%, thai 41 42 tun t l thiu i 27,4%, d tt s sinh 0,8% Do m cha mang thai ln no l 56,7%, ... nc i ca thai bỡnh thng t 28 tun tui, Y hc thc hnh s 11/2001 Nguyn c Hinh (2003), ỏnh giỏ ch s nc i bng siờu õm ca thai bỡnh thng t 28 tun tui cú i chiu vi lõm sng phỏt hin sm nguy c thai gi,...