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PubMed1994

Influence of delivery on numbers of leukocytes, leukocyte subpopulations, and hematopoietic progenitor cells in human umbilical cord blood.

Human umbilical cord blood (UCB) may be used as an alternative source of bone marrow repopulating cells in allogeneic bone marrow transplantation. The quality and quantity of UCB harvests for transplantation is affected by several factors. In this study we analyzed the influence of delivery, in particular stress during delivery, on the numbers of leukocytes and leukocyte subsets in UCB. Four groups of women with different types of deliveries were included in the study, and from each group samples of UCB were analyzed. Blood samples from healthy adults were used as control. In UCB there was a higher absolute number of leukocytes than in peripheral blood (PB). UCB leukocytes were highest after deliveries with a prolonged second stage of labor, which was mainly due to granulocytosis. The percentage of T cells in UCB was lower than in PB, in particular when stress during delivery was higher. In all groups, however, the absolute concentration of T cells per milliliter of UCB was higher than in adult PB. The differences in T cells in stressful deliveries were mainly due to a relative decrease in CD3+/CD4+ cells in UCB. The relative frequency and absolute concentration of the CD56+ cell population in UCB was higher than in PB, which was mostly due to an increase of CD2-/CD56+ cells, in particular in stressful deliveries. The absolute number of CD34+ cells as well as hematopoietic progenitor cells as determined in semisolid medium cultures was high in UCB and was increased in cases of prolonged secondary stage of labor. This study demonstrates that the quality of UCB transplants is influenced by the course of delivery, in particular by stress during delivery.

Adult↗
PubMed1995

[Pregnancy and diffuse intestinal polyposis].

A follow-up of 52 pregnant women with diffuse polyps of the colon showed that gestation deteriorated the course of diffuse polyposis and provoked the appearance of the first symptoms of this disease. Diffuse polyposis had virtually no effect on the course of pregnancy and labor. Gestation eventuated in normal full-term delivery in 22 patients, in preterm delivery in 4, in 3 patients cesarean section was performed, in 1 the fetus was extracted with obstetrical forceps, 1 delivery finished with manual detachment and extraction of the placenta. Late spontaneous abortions occurred in 4 women, induced abortions were carried out in various periods in 68 women. Previous extensive resections of the colon undertaken for diffuse polyposis were not a contraindication to surgical delivery.

Colonic Polyps↗
PubMed1992

Perinatal audit of one hundred consecutive vacuum extractions in Maputo.

The extraordinary demands on obstetrical services that prevail in many developing countries necessitate critical reviews of existing norms for obstetrical management. Vacuum extractions were studied in this context as a part of the regular perinatal audit carried out at the Maputo Central Hospital, the only hospital in Maputo with emergency surgery catering to the 43,000 annual deliveries. Extractions performed with the fetal head above the ischiatic spines were associated with a high number of complications and an 81% risk of neonatal asphyxia and also with a number of severe neonatal traumas. The risk of intracranial hemorrhage tended to be higher with extractions of fetuses with the head at or above the ischiatic spines, particularly when there was concomitant intrapartum asphyxia. It is concluded that a frequent perinatal audit of selected risk deliveries is a useful monitoring tool for examining prevailing indications for various obstetric interventions.

Asphyxia Neonatorum↗