An analysis of various factors affecting postpartum umbilical cord blood volume for hematopoietic stem cell transplantation / 대한산부인과학회지

OBJECTIVE: Umbilical cord blood is an effective alternative to bone marrow as a source of hematopoietic stem cells for transplantation. But the amount of collected umbilical cord blood and its contents are limited and obtaining an adequate volume of umbilical cord blood is essential for successful transplantation. The aim of this study was to identify factors that influence the volume of umbilical cord blood. METHODS: A retrospective analysis of the maternal, neonatal and placental factors that were obtained by medical record review was conducted. The variables that were evaluated for this study were mother's age, parity, gestational age, presence of maternal diabetes mellitus, route of delivery, multiple births, neonatal sex and birth weight, and placental weight. Total 484 deliveries were evaluated from March 2003 to April 2004. The statistical significance of observed differences was calculated using t-test and multiple regression analysis; p-value<0.05 was considered significant. RESULTS: Gestational age, neonatal birth weight, placental weight, parity, number of fetus and maternal diabetes mellitus were significantly associated with a greater volume of collected umbilical cord blood. Obstetric factors that influenced the total nucleated cell concentration were gestational age, neonatal birth weight, placental weight, number of fetus, and route of delivery. CONCLUSION: To prolong a gestational age as far as possible, at least beyond the 37 completed weeks of gestation, and modifying a method of vaginal delivery or cesarean section rather than conventional vaginal delivery method can increase significantly the volume of collected cord blood and the yield of the concentration of total nucleated cell.

The Effects of Parents Training through Video Feedback for Autistic Spectrum Disorder Children's Language Development and Child-parent Interaction

OBJECTIVE: The purpose of this study was to investigate the effects of video feedback training for the parents of autistic spectrum disorder children. METHOD: Ten Autistic spectrum disorder children and their mothers participated in this training. Twenty minutes play times were videotaped including free play time and chosen play time. After one session, watching videotape, the researcher analyzed the relation of the children and their mother and had a feedback training with the mother of child. RESULTS: The child's responses to the mother's start actions had significant differences (p<0.05). The language responses of children increased in the organized environment of chosen play. Language responses increased but negative actions and no responses reduced when mother encouraged child centered play rather than mother engaged in children's play directly. In log sector model, mother's responses according to the play type had meaningless difference (p0.05). But in division analysis mother's responses to child's start action had meaningful difference in pre/post treatment and play type. CONCLUSION: The effects of video feedback training of autistic spectrum disorder children's parents were positive. Through this investigation the interaction and the communication with autistic spectrum disorder children and their parents are influenced positively.