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Biomedical subjects

M Katz

Publications and source records attributed to M Katz.

727 records · Page 41Linked to original sources

Obstetric performance in Ethiopian immigrants compared with Israeli parturients.

It was the aim of this study to evaluate the obstetric performance of Ethiopian Jewish immigrants in comparison to the general Jewish obstetric population. The study was performed at the Soroka Medical Center, Beer Sheva, which manages the busiest delivery ward in Israel. Between 1988 and 1991 a total of 20,047 non-Ethiopian women (Group N) and 431 parturients of Ethiopian origin (group E) delivered at the Soroka Medical Center. Group E included a significantly higher percentage of grandmultiparous women than group N. Among diseases complicating pregnancy there was a statistically significant higher incidence of severe pregnancy-induced hypertension (PIH) in group E than in group N. Mild PIH and chronic hypertension were of comparable prevalence in both groups. The prevalence of class A diabetes mellitus was significantly lower in group E than in group N; the same trend was also observed for diabetes class B but without reaching statistical significance. There was no significant difference between the groups in the prevalence of polyhydramnios, postdatism and poor obstetric history, or fetal distress, s/p cesarean section, and prolapse of cord. Statistical analysis indicated a tendency towards significance for higher prevalence of premature rupture of membranes in group N. Malpresentations and malpositions were of similar prevalence in both groups. The incidence of premature delivery in group E showed a higher relative risk, suggesting a tendency of significance. The incidence of meconium-stained amniotic fluid in group E was significantly higher than in group N. There was no significant difference in the prevalence rates of placental complications such as placenta previa and abruption of placenta between the groups. The mode of delivery, the prevalence of complications during the third stage of labor, birthweight of infants and perinatal mortality were similar for both groups. In conclusion, the obstetric performance in Ethiopian Jewish immigrants is surprisingly similar to that of Israeli Jewish parturients. The only prominent pathology that does not seem to be related to life-style and nutrition is pregnancy-induced hypertension.

Birth Weight↗

Assessment of uterine and umbilical artery velocimetry during latent and active phases of normal labor.

Twenty healthy parturients in active labor were monitored with continuous wave Doppler to assess changes in uterine and umbilical velocity waveforms. Each case served as its own control. Tracings of fetal heart rate monitoring were normal in all patients. The analysis of the waveforms included the peak systolic/end-diastolic ratio for the umbilical circulation (umbilical artery), and the systolic minus diastolic velocity divided by systolic velocity (resistance index) was used as an indication of downstream resistance in the uterine arteries. Recordings from umbilical, left and right uterine arteries were obtained during various stages of progression of labor as indicated by Friedman's curve. In latent phase labor with intact membranes, as well as in three consecutive measurements throughout active phase labor until delivery, umbilical artery systolic/end-diastolic ratios, before, during and after contraction did not change--2.2 +/- 0.5, 2.3 +/- 0.6, 2.2 +/- 0.3 and 2.5 +/- 0.7 (NS). No changes in the resistance to flow in the left and right uterine arteries were recorded during both latent and active phases of labor--0.53 +/- 0.09, 0.52 +/- 0.1, 0.5 +/- 0.07, 0.56 +/- 0.07 (NS) and 0.59 +/- 0.1, 0.57 +/- 0.1, 0.56 +/- 0.1, 0.59 +/- 0.08 (NS), respectively. These results suggest stability of the fetal cardiovascular system ensuring continuous constant gas exchange process during labor, enabling most term fetuses to tolerate labor to a degree where minimal if any metabolic changes occur.

Adult↗