Intrauterine ultrasonographic assessments of embryonic development

Article Abstract:

Intrauterine ultrasound could reveal abnormalities in human embryos as young as eight weeks old. Intrauterine ultrasound is performed by passing a catheter-based, miniature ultrasound probe through the cervix into the uterus. Researchers performed this procedure on 34 women who were scheduled for a therapeutic abortion in their first trimester. The probe visualized many embryonic body parts, including the developing brain, liver and stomach, legs and arms, and fingers and toes. Umbilical cord cysts were detected in 15% of the embryos, which is considerably higher than the 0.4% rate found using transvaginal ultrasound. One cystic hygroma was discovered in an 8-week-old embryo, which is sooner than transvaginal ultrasound can detect them. By nine weeks, the embryos were too big to be clearly visualized. This technique could supplement transvaginal ultrasound in high-risk pregnancies.

Evaluation, Fetoscopy, Human embryo

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Intratumoral peak systolic velocity as a new possible predictor for detection of adnexal malignancy

Article Abstract:

Malignant tumors in the ovaries and fallopian tubes may be distinguished from benign tumors by a high systolic blood flow velocity. Researchers studied 102 women with tumors of the ovaries, fallopian tubes, or ligaments, known as adnexal tumors, using color Doppler ultrasonography. Most women had benign tumors, but 30 had malignancies. Measurements of peak systolic blood flow velocity detected malignant tumors more accurately than did resistance index or ultrasound diagnosis from within the vagina. Malignant tumors grow new blood vessels, which provide nourishment for their growth, at a faster rate than benign tumors. Transvaginal ultrasound could detect abnormal tumor features, but these did not accurately identify whether a tumor was benign or malignant.

Usage, Diagnosis, Uterine cancer, Doppler ultrasonography

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Maternal ophthalmic artery Doppler velocimetry in normotensive pregnancies and pregnancies complicated by hypertensive disorders

Article Abstract:

Pregnant patients with more severe blood pressure disorders seem to have lower blood flow measurements in their eyes. Doppler ultrasound was used to measure an index of blood flow called pulsatility in the eye blood vessels of pregnant patients with blood pressure disorders and pregnant and non-pregnant women with normal blood pressure. Mean pulsatility indices ranged from 1.17 for pregnant women with severe preeclampsia to 2.92 for pregnant women with normal blood pressure. Women with long-term high blood pressure had similar pulsatility indices as those with mild preeclampsia.

Physiological aspects, Hypertension in pregnancy, Gestational hypertension

Similar abstracts:

• Abstracts: Quantitative echocardiographic assessment of left ventricular function in critically ill obstetric patients: a comparative study
• Abstracts: Endometrial thickness as measured by endovaginal ultrasonography for identifying endometrial abnormality. Transvaginal ultrasonography of the endometrium in women with postmenopausal bleeding - a Nordic multicenter study

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