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991.
Gestational choriocarcinoma associated with a viable pregnancy is extremely rare, and such choriocarcinoma with metastases presenting during the pregnancy is even more exceptional. Metastases from this tumor may present in a variety of ways depending on the site of the metastatic lesion, and can be fatal before choriocarcinoma is even suspected. We describe a 32-year-old primigravida presenting at 31 weeks gestation with a grand mal seizure due to cerebral metastases secondary to gestational choriocarcinoma who was subsequently successfully treated with chemotherapy. To our knowledge this is the first reported case of choriocarcinoma presenting with signs due to cerebral metastases during pregnancy where both the mother and child survived. This paper emphasizes the need to consider metastatic choriocarcinoma in any gravid female who presents with unusual neurological signs because of the life-threatening nature of this potentially curable disease. 相似文献
992.
Child development and emergent literacy 总被引:4,自引:0,他引:4
Emergent literacy consists of the skills, knowledge, and attitudes that are developmental precursors to reading and writing. This article offers a preliminary typology of children's emergent literacy skills, a review of the evidence that relates emergent literacy to reading, and a review of the evidence for linkage between children's emergent literacy environments and the development of emergent literacy skills. We propose that emergent literacy consists of at least two distinct domains: inside-out skills (e.g., phonological awareness, letter knowledge) and outside-in skills (e.g., language, conceptual knowledge). These different domains are not the product of the same experiences and appear to be influential at different points in time during reading acquisition. Whereas outside-in skills are associated with those aspects of children's literacy environments typically measured, little is known about the origins of inside-out skills. Evidence from interventions to enhance emergent literacy suggests that relatively intensive and multifaceted interventions are needed to improve reading achievement maximally. A number of successful preschool interventions for outside-in skills exist, and computer-based tasks designed to teach children inside-out skills seem promising. Future research directions include more sophisticated multidimensional examination of emergent literacy skills and environments, better integration with reading research, and longer-term evaluation of preschool interventions. Policy implications for emergent literacy intervention and reading education are discussed. 相似文献
993.
AP Kappeler PW Siegrist P Peter HR Koelz GJ Krejs AL Blum 《Canadian Metallurgical Quarterly》1976,101(31):1145-1148
Oesophageal functions were measured in 18 patients with angina, 13 healthy volunteers and 29 age-matched patients with reflux disease. Acid clearance was as abnormal in angina patients (88 +/- 46 swallows) as in those with reflux disease (97 +/- 45). The pressure in the lower oesophageal sphincter was low in patients with angina (13 +/- 8 mm Hg). The incidence of hiatal hernia, subjective symptoms during acidification of the oesophagus and results of the reflux provocation test were similar in patients with angina pectoris and healthy controls. 相似文献
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