2024年8月5日 · The amniotic fluid index (AFI) is an estimate of the amniotic fluid volume in a pregnant uterus. It is part of the fetal biophysical profile. The normal range for amniotic fluid volumes varies with gestation 4. Median AFI level is ~14 cm from week 20 to week 35, after which the amniotic fluid volume begins to reduce. Typical values include:

2023年1月16日 · Describe how to properly perform an ultrasound and calculate an amniotic fluid index and maximal vertical pocket. Identify abnormal amniotic fluid parameters. Describe common etiologies associated with oligohydramnios and polyhydramnios.

2024年1月31日 · Amniotic fluid sludge is a finding in obstetric transvaginal ultrasound scanning. Defined as free-floating hyperechogenic material in close proximity to the cervical internal os within the amniotic cavity of women with intact fetal membranes 1. It images as a dense, homogenous mass 2.

Chauhan et.al. (24) compared semi-quantitative methods (AFI and two-diameter pocket) with fluid assessment at dye dilution amniocentesis and concluded that the range of the 95% confidence intervals is so wide that sonographic assessment is not a reasonable reflection of the actual amniotic fluid volume.

2024年8月5日 · Ultrasound is the modality of choice of assessing amniotic fluid volumes. The AFV can be assessed by ultrasound by using three main indirect parameters:

2023年5月18日 · Accuracy of the Ultrasound Estimate of the Amniotic Fluid Volume (Amniotic Fluid Index and Single Deepest Pocket) to Identify Actual Low, Normal, and High Amniotic Fluid Volumes as Determined by Quantile Regression.

Assessment of amniotic fluid volume is an essential part of the basic obstetric ultrasound examination. The two techniques that are commonly proposed for the estimation of most amniotic fluid include assessment of the single maximal vertical pocket of fluid or the amniotic fluid index.

Second- and third-trimester obstetrical ultrasound examinations include an amniotic fluid volume assessment. Professional organizations’ clinical guidance recommends using semiquantitative techniques, such as the single deepest vertical pocket or amniotic fluid index, for this purpose.

2023年6月9日 · During a normal ultrasound, your doctor or an ultrasound technician will check on your amniotic fluid levels. There are a few ways to estimate amniotic fluid volume. They include...

Ultrasound may be used to obtain a qualitative measure of the amount of amniotic fluid present. One ultrasound method of assessing the AF is to measure the depth of the largest visible pocket of fluid surrounding the fetus.