Ultrasonic assessment of cervix in “at risk” patients

Abstract

One hundred seventy patients were considered to be at risk of cervical incompetence from their previous history. They were scanned serially from the first trimester to 36 weeks gestation. Of the 170, 105 patients (61.8%) were found to have defective cervix (the length of cervix, width of the cervix, and cervical canal at the level of the internal cervical os, and herniation of amniotic membrane with or without fetal parts into the cervical canal). Of the 105 patients diagnosed to have defective cervix (possible cervical incompetence), 22 patients (21%) aborted, 48 patients (45.7%) had to have cervical cerclage, 26 patients (24.8%) had preterm delivery and the remaining 9 patients (8.5%) had no problems during pregnancy. The remaining 65 patients (38.2%) did not have ultrasonic evidence of cervical incompetence and 3 aborted and only 2 patients delivered between 35 and 37 weeks gestation while 60 patients delivered between 37 and 42 weeks gestation. These 65 patients would have had cervical cerclage on the basis of the clinical history alone, but in only 6, cervical cerclage was inserted.

Outcome of Prolapsed Chorioamniotic Membrane: Relationship between the Degree of Herniation, Infection, and Pregnancy Prolongation

“…Many authors report an increased failure with protruded membrane because microbial invasion of the amniotic cavity occurs frequently. [6][7][8][9][10][17][18][19] Our data support these reports. However, we have observed prolongation of pregnancy for several weeks after diagnosis of severe protruding membrane.…”

Predição do parto prematuro: avaliação sequencial do colo uterino e do teste para proteína-1 fosforilada ligada ao fator de crescimento insulina-símile

“…Assim, a prevenção secundária consiste na pesquisa de indicadores de maior risco, tais como colo curto e alteração de marcadores bioquímicos 13 , com o objetivo não só de identificar os casos que evoluirão para parto prematuro, como também de excluir o risco quando ele não existe. Na década de 1980, alguns autores [14][15][16][17][18][19][20] passaram a sugerir que a medida ultrassonográfica do comprimento do colo uterino apresentava relação direta com o parto prematuro.…”

Prevenção do parto prematuro: emprego do toque vaginal e da ultra-sononografia transvaginal

“…Com o avanço tecnológico vários autores passaram a utilizar a ultra-sonografia para avaliação cervical a fim de obter medidas mais precisas do mesmo 6,30,32 .…”