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Biomedical subjects

M Mazor

Publications and source records attributed to M Mazor.

At least 91 records · Page 5Linked to original sources
PubMed1986

Management and outcome of vertex-breech and vertex-vertex presentation in twin gestation: a comparative study.

A comparative study of twin pregnancies with vertex-breech and vertex-vertex presentation was undertaken to evaluate the effect of mode of delivery on perinatal outcome. During the years 1978-1984 there were 89 cases of vertex-breech deliveries at our institution and a control group of 89 cases of vertex-vertex presentation were chosen. The cesarean section rate was 11.2% for both twins in vertex-breech, and 20.2% for the first twin and 23.6% for the second in vertex-vertex presentation. The primary indications for cesarean section were not related to the type of presentation. The perinatal mortality was 22.4/1000 in the study group and 89.8/1000 in the control population. There were no statistically significant differences in 5-min Apgar scores and perinatal morbidity between the two types of presentation. We found that the high perinatal morbidity and mortality of both twins is related to prematurity and intrauterine growth retardation and not associated with the type of presentation of the second twin. Therefore, routine cesarean section for vertex-breech presentation is not necessarily indicated.

Apgar Score↗
PubMed1986

Electrical accidents during pregnancy.

Electrical accidents during pregnancy are relatively infrequent, and reports are rare. Six pregnant women who suffered an electrical injury during pregnancy are presented here. For all, the current path through the body was from hand to foot. Changes that occurred in fetal movements and development as well as the outcome of the pregnancies, are presented. After delivery, the placenta and cord were carefully examined in all cases. From an analysis of the published cases and the present findings, it seems that there are no specific clinical and pathological signs of fetoplacental damage. Medical examination, shortly after the accident, may reveal a dead fetus. However, when it is found alive, oligohydramnios or growth retardation may develop later, and a close follow-up seems advisable. Pregnant women should be warned to notify their attending physician in all cases of electrical shock, no matter how apparently minor.

Adult↗
PubMed1986

The effect of maternal hypocalcemia on fetal heart rate baseline variability.

Marked decrease in fetal heart rate variability during labor was observed in a term fetus, borne by a mother with severe hypocalcemia due to idiopathic hypoparathyroidism and nutritional vitamin D deficiency. During the period of decreased baseline variability, fetal scalp pH was normal. A marked increase in fetal heart rate variability was observed within 5 minutes of intravenous administration of 1 gram calcium gluconate to the parturient. It seems that the recognition of the effect of maternal hypocalcemia on baseline fetal heart rate variability is important for accurate interpretation of fetal monitor tracing.

Adult↗
PubMed1986

Relationship between head size and latency of the auditory brainstem response.

This investigation examines the relationship between the head size of 22 normally hearing individuals and the latency of their respective auditory brainstem responses (ABR). The absolute latency of wave V and the I-V interpeak interval were examined in 12 female and 10 male subjects with varying head sizes. Strong positive correlations were obtained between head size and the latency of both wave V and the I-V interpeak interval. The evidence suggests that this relationship is based upon subject differences in brain size which is reflected in head size. Head size appears to be an important source of intersubject variability which should be considered in order to increase the clinical usefulness of the ABR.

Adult↗
PubMed1986

Complications associated with the macrosomic fetus.

A retrospective study was done on 525 infants who weighed more than 4,500 g. The rates of grand multiparity, diabetes mellitus, pregnancy-induced hypertension, deliveries in women over 35 years of age, placenta previa and weight gain of more than 15 kg were higher than in a control group weighing 2,500-4,000 g. The rates of delivery with instruments and cesarean section were also significantly higher. The main indication for cesarean section in the study group was cephalopelvic disproportion, while in the control group it was repeat cesarean section. Rates of postpartum hemorrhage, shoulder dystocia, oxytocin augmentation of labor and tears in the birth canal far exceeded those in the control group. Maternal and fetal morbidity and perinatal mortality were significantly higher than in the control group. The complications were due to a difficult second stage of labor. Delivery of the macrosomic fetus by cesarean section is highly recommended except for the subgroup of women who already delivered a macrosomic child.

Adult↗
PubMed1986

Management and outcome of multiple pregnancies complicated by the antenatal death of one fetus.

Over a 15-year period, infants from 1,192 multiple gestations were delivered at Soroka Medical Center, Beer Sheva, Israel. In 21 patients the pregnancy was complicated by the antenatal death of one fetus. In 2 of the 4 cases of monochorionic placenta, both twins died in utero within a short time, while in the 17 cases of dichorionic placenta there was no second fetal death. It seems that in cases of monochorionic placenta, the surviving twin is exposed to a more dangerous environment, and death can occur imminently. The management protocol should be based, if possible, on the type of placentation.

Adult↗
PubMed1986

[Restoration of fertility following excision of an intracranial hydatid cyst].

An unusual case of a 31 year-old Bedouin women, with secondary infertility of 13 years' duration who conceived twice spontaneously after removal of a hydatic cyst from her frontal lobe is reported. The reproductive function was restored probably by releasing the hypothalamic-pituitary axis from the pressure exerted by the cyst.

Adult↗
PubMed1986

[Intrauterine death of one of the fetuses in a twin pregnancy].

A case of twin pregnancy complicated by intra-uterine death of one fetus 10 weeks before term is described. The occurrence of this complication raises difficult questions about the management and outcome of this rare event. A review of 23 patients with similar findings brought us to the conclusion that the management protocol to be applied should be based, if possible, on the type of placentation.

Adult↗
PubMed1985

Absence of fetal movements and normal infants.

Pregnant women feel movements from about the fifth month of pregnancy. In cases of high-risk pregnancy daily recording of fetal movements is useful in monitoring fetal well-being. Complete cessation of fetal movements points to a severely distressed fetus and impending death. We report here five women in whom failure to experience fetal movements was present from the beginning of pregnancy, or occurred after fetal movements had been felt for several weeks during the pregnancy. All the women delivered normal infants with high Apgar score.

Adolescent↗
PubMed1985

The ultrasound score and fetal heart-rate pattern as predictor of fetal outcome.

Over a period of one year 312 high-risk patients (HRP) were prospectively monitored using ultrasound score (USS), nonstress test (NST) and contraction stress test (CST). There were nine cases with low USS, seven of them had reactive NSTs, were delivered vaginally without any evidence of distress in labour and had normal Apgar scores with no perinatal morbidity. In the remaining two cases the NST was nonreactive and they were delivered by cesarean section because of fetal distress. The NST was not reactive in 18 patients, eight of them subsequently had abnormal CST and displayed fetal distress during labour. The USS was high in 16 cases. The results of this study seems to indicate that in cases with nonreactive NST, CST is a better predictor of fetal outcome than the ultrasound score.

Female↗
PubMed1985

Fetal malformations associated with breech delivery. Implications for obstetric management.

Among 1,411 breech deliveries at the Soroka Medical Center, Beer-Sheva, Israel, there were 116 cases of congenital anomalies (8.2 %). Forty-nine fetuses (3.47%) exhibited major congenital anomalies and 67 (4.7%), minor ones. The incidence of chromosomal anomalies was 0.63% (1 per 159 births) as compared with 0.25% in the general population. The frequency distribution indicated that most of the fetuses with congenital abnormalities weighed 2,000 gm or more. In view of the high incidence of chromosomal aberrations and major congenital anomalies among fetuses with breech presentation, it seems desirable to consider ultrasonographic assessment and chromosomal analysis during the last trimester of pregnancy.

Adult↗