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Biomedical subjects

Y Sivan

Publications and source records attributed to Y Sivan.

62 records · Page 4Linked to original sources
PubMed1983

Assessment of ear length and low set ears in newborn infants.

In order to define normal values for ear length and position in the newborn infant, 198 (87 term and 111 preterm) infants were examined. In every case gestational age was determined chronologically and clinically. Ear length was measured from the superior to the inferior aspects of the ear. Using a horizontal line passing through the inner canthi of the eyes the portion of the ear above this line was measured, determining the position of the ear by its relation to total ear length. Normal values are presented by plotting the mean +/- 2 SD versus the gestational age. Small ears and low set ears are defined as values less than the mean -2 SD.

Ear↗
PubMed1983

Direct hyperbilirubinemia complicating ABO hemolytic disease of the newborn.

A retrospective study of the diagnostic implications of conjugated hyperbilirubinemia complicating ABO hemolytic disease of the newborn (HDN) was done by studying the records of 264 infants with ABO-HDN. Direct hyperbilirubinemia was found to complicate ABO-HDN in 3 per cent of the infants, all being full term. Eighty-seven per cent were female and familial occurrence was noted in half of the cases. Most of the infants presented with anemia on the first day of life. Our data suggest that this is a benign complication of ABO-HDN which clears within a month.

ABO Blood-Group System↗
PubMed1983

Sternum length, torso length, and internipple distance in newborn infants.

In order to define standards for sternal length, torso length, and internipple distance in the newborn infant, 198 term and preterm infants (27 to 41 gestational weeks) were examined. In every case, the gestational age was determined chronologically and clinically. Sternal and torso length and internipple distance were measured by two observers using standard measurement techniques. Normal values are presented by plotting the mean +/-2 SD for each gestational week v the gestational age.

Anthropometry↗
PubMed1982

Comparative histology of the mouse bladder following initial infection and re-infection with Escherichia coli.

The present study continues our investigation of the bladder antimicrobial mechanisms following bacterial infection. Since the process of spontaneous clearance of bacteria (E. coli) from the mouse bladder is greatly accelerated upon re-infection, a histopathological comparison was made of initially infected (II) versus re-infected (RI) mice. It was reconfirmed that the spontaneous clearance upon re-infection is indeed much faster than after the initial infection. There were morphological differences between these two courses of infection, as well as in the localization and composition of the inflammatory response. Thus cellular infiltration was more evident in the epithelium of the II mice, whereas the RI animals displayed increased cellular exudation in the lamina propria. It was also found that the dominant cell in the II mouse is the granulocyte and in the RI mouse--lymphocytes, macrophages and plasma cells. This last finding is suggestive of a local immunological process. The overall results are consistent with the notion that a local immune response develops in the infected bladder and participates in the enhanced clearance in RI animals.

Animals↗
PubMed1982

Eye measurements in preterm and term newborn infants.

The purpose of this study was to establish normal anthropometric standards for eye measurements in newborn infants born between 27 and 41 weeks of gestation. In 198 term and preterm newborn infants, palpebral fissure size and inner and outer canthal distances were measured and the interpupillary distance was calculated. The mean and 2 SD from the mean for each gestational week was determined, and the normal values are presented as intrauterine growth curves of these parameters for gestational age.

Anthropometry↗
PubMedDate not supplied

Effect of religious observance on infants' sleep position in the Jewish population.

OBJECTIVES: To describe the effect of the level of religiousness on infants' sleep position in the Jewish population. METHODS: A longitudinal telephone survey of randomly selected 608 2-month-old Jewish infants repeated at 4 and 6 months. Results were analyzed versus the four levels of Jewish religion observance. RESULTS: A significant correlation was found between the level of religious practice and sleep position (P < or = 0.002). 56.8% (50/88) of ultra-orthodox parents put their babies to sleep in the non-prone position, compared with 79% (411/520) in the other three groups (P < 0.001). Non-prone sleeping decreased when infants grew. Higher parity correlated with the level of religiousness and with prone sleeping in religious families (OR = 1.15, 95% CI 1.00-1.33, P < 0.001). CONCLUSIONS: Jews and especially the ultra-orthodox families comply significantly less with recommendations to avoid prone sleeping. Specific measures may be required in this population that rely more on personal experience and belief than on health care provider advice.

Humans↗
PubMedDate not supplied

Thigh circumference and thigh-to-head ratio in preterm and term infants.

The diagnosis of altered fetal growth requires multiple criteria that include not only weight and length measurements, but also head, abdominal, and thigh circumference measurements. This cross-sectional study presents the normal standards for thigh circumference, thigh-to-head ratio, and Rohrer's ponderal index in newborn infants from 27 to 41 weeks' gestation, in relation to gestational age and birth weight. A thigh-to-head ratio of < 0.38 and a ponderal index < 2.3 in a term infant are important measurements for appropriate diagnosis of impaired fetal growth. These standards may also serve as reference for comparison with fetal ultrasonographic measurements.

Anthropometry↗