DÒ TAÄT HEÄ NIEÄU
BS Haø Toá Nguyeân
BV Töø Duõ
Môû ñaàu
Baát thöôøng heä nieäu khaù phoå bieán, chieám
20% taát caû caùc baát thöôøng cuûa thai.
Tyû leä dương tính gia cao: 39%-52%, do phaàn
lôùn caùc thaän öù nöôùc ñeàu bình thöôøng sau
sanh.
Löôïng nöôùc oái laø daáu hieäu giaùn tieáp raát quan
troïng phaûn aûnh chöùc naêng cuûa thaän.
GIAÛI PHAÅU HOÏC
SA ngaõ AÑ: coù theå thaáy thaän vaø BQ ôû thai 9 tuaàn.
Thai 12 tuaàn: thaän echo daøy naèm hai beân CS.
Thöôïng thaän hình tam giaùc, echo keùm naèm ôû cöïc treân
thaän.
Bình thöôøng khoâng thaáy nieäu quaûn.
Doppler cho thaáy 2 ÑM roán naèm doïc hai beân thaønh
BQ
Baát saûn thaän-Renal agenesis
BST hai beân: Voâ oái, khoâng thaáy hai thaän, khoâng
thaáy baøng quang, thieåu saûn phoåi.
BST moät beân thöôøng bò boû soùt vaø caàn loaïi tröø thaän
laïc choã tröôùc khi chaån ñoaùn. Khoâng thaáy thaän moät
beân. BQ vaø löôïng oái coù theå bình thöôøng.
Doppler khoâng thaáy ñoäng maïch thaän
Thai <17 tuaàn löôïng oái coù theå bình thöôøng.
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