PubMed Health⌕ Search

Biomedical subjects

Y Zalel

Publications and source records attributed to Y Zalel.

At least 91 records · Page 5Linked to original sources
PubMed1993

A comparison of the nonstress test, oxytocin challenge test, Doppler velocimetry and biophysical profile in predicting umbilical vein pH in growth-retarded fetuses.

OBJECTIVE: To examine and compare the value of the nonstress test (NST), oxytocin challenge test (OCT), Doppler velocimetry (S/D ratio), and biophysical profile (BPP) in predicting fetal acidosis. METHOD: NST, OCT, S/D ratio and BPP were performed in 23 pregnancies with growth-retarded fetuses. The value of each parameter in predicting fetal acidosis (umbilical vein pH obtained by cordocentesis) was examined. RESULT: The NST, OCT and BPP were found to have the same positive predictive value of 57.1% in predicting fetal acidosis. The S/D ratio was found to have a very low positive predictive value (14.3%). The only combination of two parameters that showed improved positive predictive value, was that of OCT and NST (66.7%). CONCLUSION: (1) The best indirect method in assessing fetal well-being is the combination of NST and OCT. (2) Since the positive predictive value of the indirect methods is still low, direct assessment of the fetal metabolic status is recommended in premature growth-retarded fetuses with an abnormal test.

Acidosis↗
PubMed1993

Antenatal diagnosis of congenital dislocation of the knee: a case report.

Congenital dislocation of the knee was diagnosed antenatally in an abdominal flat plate. This is probably the first time that this condition has been diagnosed prior to delivery. Examination of the newborn after delivery revealed dislocation of the right hip and knee. The obstetric and orthopedic implications and suggested treatment are discussed.

Adolescent↗
PubMed1993

Ultrasound-guided aspiration for relief of pain generated by simple ovarian cysts.

Over a 2-year period, ultrasound-guided aspiration of painful, presumptively benign ovarian cysts was performed in 18 women < 40 years old. Aspiration was performed either transvaginally (12 patients) or transabdominally (6 patients) depending on the cyst location. Neither anaesthesia nor analgesia were used, and all patients had immediate pain relief, and escaped immediate surgical intervention. None had complications or evidence of malignant cells on cytologic examination, and all were discharged within 24 h of the procedure. The recurrence rate within 1 year of the procedure was 11.1%. The procedure appeared to be a good and safe alternative to surgery.

Adolescent↗
PubMed1993

Fetal circulatory endothelin-1,2 in the midtrimester.

Umbilical-vein blood from eight fetuses who underwent cordocentesis for rapid karyotyping at 19-22 gestational weeks was tested for immunoreactive endothelin-1,2 by means of radioimmunoassay. Endothelin was detected in the serum of all but one of these fetuses. Levels of endothelin-1,2 ranged from 8.5 to 19.2 fmol/ml (mean 13.4 fmol/ml). We speculate that endothelin in the fetoplacental circulation may play a role in the regulation of fetal hemodynamics in utero.

Cordocentesis↗
PubMed1992

First-trimester ultrasonic diagnosis of twin reversed arterial perfusion sequence.

Twin reversed arterial perfusion (TRAP) syndrome sequence is a rare specific anomaly of twin gestation with fused placentae and umbilical anastomosis. This syndrome occurs once in very 35,000-48,000 births and has been described in the second trimester (23-29 weeks of gestation). We report on early sonographic diagnosis (10 and 12 weeks' gestation) of two cases of TRAP sequence, together with their umbilical cord Doppler studies.

Adult↗
PubMed1992

High levels of maternal serum alpha-fetoprotein and human chorionic gonadotrophins leading to the diagnosis of combined neural tube defect and partial mole.

A case of combined partial mole and neural tube defect is presented. The detection of high levels of both maternal serum (MS) alpha-fetoprotein (AFP) and human chorionic gonadotrophin (hCG) during the second trimester led to the ultrasonic demonstration of anencephaly, omphalocele, and partial mole. This is the first report of combined elevation of MSAFP and MShCG.

Adult↗
PubMed1992

Ultrasonic diagnosis of mediastinal cystic hygroma.

The incidence of cystic hygroma, which represents dilated obstructed jugular lymph sacs, is 1 in 6000 pregnancies. Cystic hygromas can be located in the nuchal area or in any other location. The prenatal ultrasonic diagnosis of a cystic hygroma in the mediastinum is presented.

Adult↗
PubMed1992

Persistent gestational trophoblastic disease following evacuation of a tetraploid partial hydatidiform mole.

A 31-year-old woman at 11 weeks gestation with ultrasonographic demonstration of partial mole had markedly elevated serum bHCG levels (458,000 mIU/ml). The patient underwent a vacuum curettage with pathological confirmation of the diagnosis, and cytogenetic analysis revealed a tetraploid karyotype (92,XXXX). The patient developed persistent gestational trophoblastic disease and was successfully treated with two courses of actinomycin D. Persistent trophoblastic disease after evacuation of a tetraploid partial mole was not reported previously.

Adult↗
PubMed1992

Aggressive angiomyxoma of the vulva.

A case of aggressive angiomyxoma (AAM) of the vulva is presented. The tumor presented as a slowly growing polypoid mass in the right labium minus near the clitoris. The tumor was treated by wide local excision. The microscopic appearance was that of spindle-shaped neoplastic cells widely separated by a loose myxoid stroma rich in collagen fibers, hyaluronic acid, and prominent irregular-shaped blood vessels. Aggressive angiomyxoma of the vulva must be distinguished from the more common benign and malignant myxoid tumors including myxoma, myxoid liposarcoma, myxoid variant of malignant fibrous histiocytoma, sarcoma botryoides, nerve sheath myxoma, and other soft tissue tumors with secondary myxoid changes. Local recurrence of AAM may be avoided by wide local excision.

Adult↗
PubMed1992

Spontaneous ovarian hyperstimulation syndrome concomitant with spontaneous pregnancy in a woman with polycystic ovary disease.

Ovarian hyperstimulation syndrome has been described after treatment with exogenous gonadotropins, clomiphene citrate, and gonadotropin-releasing hormone. Spontaneous ovarian hyperstimulation syndrome has not been described before, except in association with hypothyroidism. We report on a case associated with spontaneous pregnancy, occurring in a woman with polycystic ovary disease.

Adult↗