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101.
The therapy of deep venous thrombosis consists of several elements and depends on the localization, the age and the extent of the thrombus. This article discusses various types of initial therapy and long-term treatment of venous thromboembolism and also reviews future perspectives of pharmacological treatment. The initial treatment regimens comprise thrombolysis, thrombectomy, inferior vena cava filters and the anticoagulation with either unfractionated heparin or low molecular weight heparins. Various thrombin-inhibitors have been tested for initial treatment of thrombosis, however, further investigations of their efficacy, safety and cost-effectiveness will have to provide firm evidence on their superiority when compared to unfractionated or low molecular weight heparins.  相似文献   
102.
OBJECTIVE: Our objective was to study the ability of three-dimensional MR angiography with retrospective respiratory gating to reveal stenoses in proximal coronary arteries on source and projection images. CONCLUSION: Proximal coronary artery stenoses can be identified using three-dimensional MR angiography with retrospective respiratory gating, both with projection images and on source images alone. Reasons for missed lesions included collateral vessels and retrograde flow distal to complete occlusion and volume averaging of vessels with adjacent structures. Causes of false-positive interpretations included small foci of decreased signal intensity distal to complete occlusion, partial volume effects on individual partitions, and regions of distal vessels leaving the imaging plane.  相似文献   
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Impact of a children's health insurance program on newly enrolled children   总被引:1,自引:0,他引:1  
CONTEXT: Although there is considerable interest in decreasing the number of US children who do not have health insurance, there is little information on the effect that health insurance has on children and their families. OBJECTIVE: To determine the impact of children's health insurance programs on access to health care and on other aspects of the lives of the children and their families. DESIGN: A before-after design with a control group. The families of newly enrolled children were interviewed by telephone using an identical survey instrument at baseline, at 6 months, and at 12 months after enrollment into the program. A second group of families of newly enrolled children were interviewed 12 months after the initial interviews to form a comparison sample. SETTING: The 29 counties of western Pennsylvania, an area with a population of 4.1 million people. SUBJECTS: A total of 887 families of newly enrolled children were randomly selected to be interviewed; 88.3% agreed to participate. Of these, 659 (84%) responded to all 3 interviews. The study population consists of 1031 newly enrolled children. The children were further classified into those who were continuously enrolled in the programs. The 330 comparison families had 460 newly enrolled children. MAIN OUTCOME MEASURES: The following access measures were examined: whether the child had a usual source of medical or dental care; the number of physician visits, emergency department visits, and dentist visits; and whether the child had experienced unmet need, delayed care, or both for 6 types of care. Other indicators were restrictions on the child's usual activities and the impact of being insured or uninsured on the families. RESULTS: Access to health care services after enrollment in the program improved: at 12 months after enrollment, 99% of the children had a regular source of medical care, and 85% had a regular dentist, up from 89% and 60%, respectively, at baseline. The proportion of children reporting any unmet need or delayed care in the past 6 months decreased from 57% at baseline to 16% at 12 months. The proportion of children seeing a physician increased from 59% to 64%, while the proportion visiting an emergency department decreased from 22% to 17%. Since the comparison children were similar to the newly enrolled children at enrollment into the insurance programs, these findings can be attributed to the program. Restrictions on childhood activities because of lack of health insurance were eliminated. Parents reported that having health insurance reduced the amount of family stress, enabled children to get the care they needed, and eased family burdens. CONCLUSIONS: Extending health insurance to uninsured children had a major positive impact on children and their families. In western Pennsylvania, health insurance did not lead to excessive utilization but to more appropriate utilization.  相似文献   
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AW Jones  E Jones  EM Williams 《Vacuum》1974,24(10):451-454
Investigations are described which illustrate the compatibility of alumino silicate alkali ion sources with an UHV (~10?11 torr) vacuum environment. The application of the sources to the determination of ion desorption efficiency of surface gas is demonstrated, as well as their use as a basis for a technique of ion stimulated surface gas analysis.  相似文献   
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108.
Results of follow-up examinations of 132 ears with serous or mucous middle ear effusions indicate that this disease is common in childhood and is also found in adults. In childhood adenoid growth as well as repeated catarrhal infection of the paranasal sinuses and the weakness of the levator palati play an important role in the development of middle ear effusions and deafness. With the aid of the operation microscope we were able to recognize this characteristic disease through the tympanic membrane. We perform regularly adenoidectomy together with paracentesis in this condition. In cases which had undergon several adenoidectomies we limit our treatment in the first instance to paracentesis. If cure is not so achieved we insert an inert tube into the tympanic membrane after the paracentesis. In persistent and difficult cases of glue ear radiation of the eustachion tube and antrotomy may be necessary.  相似文献   
109.
110.
Drinking was studied in water-deprived rats with chronic intragastric fistulas. Sham drinking, by which the ingested water was immediately lost through the open gastric fistula, was approximately four times greater than normal drinking. This proportion held across different levels of water deprivation, following 5-ml intragastric preloads of water or isotonic saline or ingestion of isotonic saline. The contribution of oropharyngeal controls in the normal drinking of rats is discussed and is compared with that of other species.  相似文献   
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