Predictive Value of Yolk Sac in Early Pregnancy by Ultra|Sonography

Predictive Value of Yolk Sac in Early Pregnancy by Ultra-Sonography

An enlarged yolk sac, greater than 6 mm in diameter can be the first sign of an eventful pregnancy failure.

Can Ultrasound Analysis of the Yolk Sac be a Predictor of ...

The yolk sac can be seen on ultrasound for about 5 weeks, sometimes before the embryo is viewed, with a size of 5 to 6mm. A size greater than 6mm may be ...

Yolk sac size & shape as predictors of first trimester pregnancy ...

The presence or absence of yolk sac has a strong predictive value for poor pregnancy outcome. Yolk sac shape was a better predictor of poor ...

Detection of enlarged yolk sac on early ultrasound is associated with ...

A few studies have reported the predictive value of YS diameter > or <2 SD from the mean on early first-trimester ultrasounds 2, 3, 5, 8. We examined the value ...

Early pregnancy ultrasound measurements and prediction of first ...

Our observations showed that, after 5 complete weeks' gestation, a small GS and a large YS reliably predicted pregnancy loss.

THE PREDICTIVE VALUE OF AN ABSENT YOLK SAC AT FIVE ...

The presence of a YS at 5 weeks gestation is highly predictive of ongoing pregnancy and should instill confidence in patients undergoing fertility treatment.

Yolk sac diameter and shape at endovaginal US - RSNA Journals

A YS diameter more than two standard deviations (SDs) above the mean when compared with the mean gestational sac diameter allowed prediction of an abnormal ...

Yolk sac size & shape as predictors of first trimester pregnancy ...

Yolk sac shape was a better predictor of poor pregnancy outcome in terms of higher specificity and negative predictive value as compared to yolk sac diameter.

A study to assess predictive value of yolk sac diameter by ...

A yolk sac can be detected easily by transvaginal sonography when the mean gestational sac diameter is 5 to 6 mm. Generally, the yolk sac should ...

Accuracy of first‐trimester ultrasound in diagnosis of intrauterine ...

The yolk sac, visible from 35 days' gestation3, is the first structure to appear within the gestational sac, and indicates an intrauterine ...

prognostic factors of ultrasonography of yolk sac size and embryonic ...

Table (7): Validity of embryonic heart rate (EHR) in prediction of first trimester pregnancy ... The value of the secondary yolk sac in predicting pregnancy ...

A study to assess predictive value of yolk sac diameter by ...

Significance of yolk sac measurements with vaginal sonography in the first trimester in the prediction of pregnancy outcome. Acta Obstet Gynecol Scand. 1997 ...

Yolk Sac Diameter and Shape via Transvaginal Ultrasonography as ...

The embryonic heart rate can be utilized as a predictive factor for the pregnancy outcome in the first trimester. Aim of the work: To see ...

Yolk sac diameter as a prognostic factor for first trimester pregnancy ...

Abnormal yolk sac diameter, irrespective of gestational age, had sensitivity of 92.95%, specificity 66.66%, positive predictive value 95.6% and negative ...

A study of yolk sac diameter in predicting abnormal outcome of ...

... predictive value of yolk sac diameter by transvaginal sonography with the pregnancy outcome. ... yolk sac in predicting pregnancy outcome during first trimester ...

Prediction of pregnancy outcomes with combined ultrasound ...

Objectives: To assess the predictive value of the combination of ultrasound scanning, yolk sacs and CA125 levels for pregnancy out- comes in early threatened ...

Role of Pelvic Ultrasonography in Evaluation of Symptomatic First ...

Identification of a gestational sac containing a clearly defined yolk sac or fetal pole (Figure 3) confirms the diagnosis of an intrauterine pregnancy with a ...

Size and Shape of yolk sac as a predictor of pregnancy outcome

Background: it is estimated that approximately 30% to 40% of implanted pregnancies resulted in spontaneous abortion during the first trimester, most of which ...

Frequency of a Persistent Yolk Sac and Its Relationship With the ...

Key Words—first trimester; gestational outcome; persistent yolk sac; sonography; yolk sac ... Value of the yolk sac in eval- uating early pregnancies.J Ultrasound ...

[PDF] Size of Yolk Sac by Ultrasonography and Its Correlation with ...

The size of yolk sac in pregnancies of duration 6-12 weeks was measured by Transvaginal sonography and its correlation with pregnancy ...