289 resultados para feto


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The possibility of a relationship between American Trypanosomiasis (Chagas') disease and pregnancy outcome was analyzed measuring feto-maternal morbidity and mortality in a sample of 604 pregnant women and their offspring seen at the Hospital Universitario de Maternidad y Neonatologia in Cordoba, Argentina during 1979.^ A cross-sectional, "case-comparison" investigation was employed to determine the degree of risk between having a reactive chagasic serologic test and a negative pregnancy outcome as determined by abortion, stillbirth, and infant death prior to one week of age. Patients were selected using a dichotomous, 0-1 scale with either the presence or the absence of a reactive Machado-Guerreiro complement fixation serologic blood test result.^ The data obtained were analyzed using appropriate statistical techniques for measuring the comparisons between the case and control groups under various demographic and socioeconomic variables such as, age, marital status, educational attainment, and residence. Similarly, additional biological variables of birth order, maternal and fetal complications, and prematurity were examined.^ From the analysis of the data obtained in this investigation, no definite conclusions can be reached regarding the risk of having an unsuccessful pregnancy outcome in the presence of a reactive serologic finding because the study design was a cross-sectional one and the number of events were too few for an adequate analysis. Notwithstanding these limitations, the results obtained, after statistical adjustments were employed, demonstrated that women with a reactive test result were older, were of a higher parity, and were less educated. Marital status and residence were not significant variables. The risk of pregnancy wastage, however, was almost twice as frequent in the reactive group as in the non-reactive group of women. Statistically significant differences in maternal morbidity involved two complications, polyhydramnios and varicosities of the lower extremities and vulva; while in the newborn, infection was higher in infants whose mothers exhibited a reactive serologic test result.^ In summary, what this research study has shown is the need for engaging in a larger, longitudinal study for an in-depth exploration of feto-maternal morbidity and mortality--an investigation that would corraborate or refute the findings of this study.^

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Un total de 129 fetos de conejas multíparas fueron estudiados según su posición intrauterina. Los más próximos al ovario presentaron mejores valores morfométricos que los más alejados a esta posición, asociándose asimismo un mayor peso placentario a un mayor peso fetal. Estas diferencias fueron mantenidas en la valoración de órganos fetales, como el cerebro, hígado y aparato digestivo, mostrándose un mayor desarrollo en los fetos adyacentes al ovario. A su vez se observó una correlación positiva entre el peso placentario y el peso de estos órganos. Las diferencias de peso dentro de la misma camada podrían estar asociadas a un mayor desarrollo placentario y por consiguiente mayor disponibilidad de nutrientes.

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Feto-placental development in the rabbit is altered by maternal food restriction from early pregnancy Maternal under-nutrition can induce Intrauterine Growth Restriction by placental insufficiency. To determine the consequences in the rabbit feto-placental unit, 32 pregnant rabbits were allocated in three feeding groups: ad libitum diet (Group C; n=9); restricted to 50% of their ad libitum intake during the pre-implantational period (Day 0 to Day 7) (Group PR; n=11) or restricted from Day 0 to Day 28 (Group TR; n=12).