关节内侧间隙测量对髋关节脱位术后稳定性的预测

目的探讨关节内侧间隙测量对髋关节脱位术后稳定性的预测意义。方法分析2004～2007年本院10例髋关节再脱位患儿以及随机抽取的50例术后未发生再脱位患儿的影像学资料,对其术后1d、1周、1．5个月、3个月、4个月、5个月、6个月骨盆平片进行患侧髋关节内侧间隙值OA以及泪滴至髋臼外缘的距离OA的测量,并采用D值（D=OA／OA）进行标准化处理。结果无再脱位组D值基本小于0．8。其中30例采用髋关节外展支具,未出现再脱位,D值位于0．66～0．8之间;脱位组在石膏同定期间,D值基本小于0．7,此时股骨头位于髋臼内,未出现脱位;术后6周至3个月拆除石膏后,D值为0．66．0．8,未采取措施,相继出现脱位,此时D值基本大于0．8。结论测量关节内侧间隙对于评价髋关节脱位术后关节的稳定性以及预测早期再脱位有重要意义。D值小于0．66,关节稳定,不会出现再脱位;D值为0．66～0．8,关节稳定性受到影响,可能出现再脱位,需尽早采取干预措施;D值大于0．8,出现再脱位,简单保守治疗措旆失去作用．需再次手术蚕新复位。     

Tacrolimus: the good, the bad, and the ugly

The aim of this study was to evaluate the efficacy and side-effects of tacrolimus in pediatric transplant patients previously receiving cyclosporin A (CsA). This study was a retrospective chart review strengthened by a concomitant patient interview. Eleven pediatric cardiac or renal transplant patients, who had been converted from CsA to tacrolimus from October 1995 to January 1999 at The Cleveland Clinic Foundation, were included; there were six renal and five cardiac transplant patients. Each chart was reviewed to assess transplanted organ function pre- and post-conversion. For the six renal transplant patients, creatinine levels and biopsy findings were evaluated. For the five cardiac transplant patients, cardiac catheterization and routine biopsy data were analyzed likewise. Epstein Barr virus (EBV) status was also evaluated in each patient. In addition, each parent or patient was interviewed to ascertain dates of transplant, current medications, and side-effects. The patients' ages ranged from 6 to 20 yr (mean age 14.6 yr). All patients had been converted to tacrolimus. Eight patients were converted for treatment of refractory rejection, two were converted because of CsA-associated side-effects, and one patient was converted empirically for a history of multiple previous transplant rejections. Seven out of eight patients who received tacrolimus for rejection therapy improved. One patient had complete resolution of gingival hyperplasia. Another patient who previously developed hemolytic uremic syndrome on CsA had no further evidence of hemolysis. Four patients were weaned off steroid therapy. Despite conversion, two renal transplant patients progressed to chronic rejection. Five patients exhibited no side-effects. Side-effects experienced included transient hyperglycemia in conjunction with steroid use, headaches, and tremors that subsided rapidly. Four of 11 patients developed post-transplant lymphoproliferative disease (PTLD). Fortunately, reducing the dose of tacrolimus and/or surgical resection of the mass (if present), eradicated the disease. In conclusion, conversion therapy successfully provides an alternate treatment for acute rejection. It also enabled some patients to discontinue steroid therapy, maximizing growth potential. PTLD is a severe, potentially life-threatening complication that needs to be recognized and monitored closely. In conclusion, tacrolimus has been shown to be a very effective agent for the treatment of refractory organ rejection, but must be used cautiously.     

Neuroimaging in the developmental disorders: the state of the science

The developmental disorders of childhood autistic, developmental language, reading (dyslexia), and attention deficit-hyperactivity disorders-manifest with deficits in the traditional behavioral domains of cognition, language, visual-spatial function, attention, and socialization. However, none of these disorders has been associated with characteristic discrete focal lesions or recognized encephaloclastic processes. Developmental cognitive neuroscientists must therefore begin with the spectrum of sometimes divergent behaviors occurring within these disorders and work backward in an attempt to identify the responsible anomalous neural systems. Since the advent of "brain imaging" two decades ago, much effort has focused on identifying brain-behavior correlates in these disorders. The results of these neuropathologic, structural, and functional neuroimaging studies are presented and the reasons for the often divergent findings are discussed. As we approach the end of the Decade of the Brain, current neuroimaging techniques give us the technology for the first time to apply a fundamental cognitive approach to brain-behavior relationships in the developmental disorders, to eliminate the conglomeration of "apples and camels" phenomenon. Researchers are working together to create comparable protocols and to adhere to methods that can be replicated across sites. The future prospects for a greater understanding of the developmental disorders are now much brighter with neuroimaging technology.     

Flaws in the assessment of the best interests of the newborn

We examined the literature on ethical decisions regarding neonates, to assess whether personal beliefs and prejudices influence end-of-life decisions taken by caregivers. Studies show that religion and familiarity with disability influence caregivers' decisions, whereas the influx of already being a parent, age, sex and professional experience is controverse. Caregivers' attitudes towards end-of-life decisions are also affected by personal concerns about litigation, prejudices and their view of disability. The concept of 'poor quality of life' is widely used as a reference in end-of-life decisions, but this can be interpreted differently, leaving room for a wide range of personal viewpoints. In most cases, parents' opinions are considered important and are sometimes the main determinant in decision making. However, it is unclear whether parents' decisions are based on their own wishes or on the best interests of the newborn.
Conclusion: In neonatal end-of-life decisions, patients may not receive cures based only on their best interests.     

抗癫(癎)药物对骨代谢的影响和防治研究进展

癫痫是神经科常见病,目前控制癫痫发作的主要手段是药物治疗。抗癫痫药物（anti—epileptic drugs,AEDs）对骨骼代谢的影响在上个世纪60年代末就有报道,近年来广大学者对此进行了深入的研究。现就国外关于AEDs对骨代谢的影响、监测和防治的研究作综述如下。     

Effect of the adaptation of the food of the hospitalized child on the cover of the nutritional needs]

AIMS: Denutrition remains a major concern in hospitalized children. Daily experience suggests that the meals proposed by hospital dietetic service, although well-balanced and in accordance with the recommendations, may be poorly accepted and consumed by children. The aims of this study were to assess the effect of modification of foods offer on energy intakes as well as nutriments and minerals and trace elements in hospitalized children. PATIENTS AND METHODS: During a 1-month period, 25 consecutive children (range 4-17 years; 13 girls), hospitalized in our pediatric department were included in the study (reasons for hospitalisation comprised: medical reasons [n=7], orthopedic problem [n=16] or surgery [n=2]). They had no restricted diet and received the usual pediatric hospital feeding according to the French recommended dietary allowances (RDA) (D1). They were compared to 21 children--matched for age, sex, nutritional status and pathology, hospitalized during the following 1-month period--who received a modified diet (D2), elaborated by dieticians according to the child's preference and excluded or limited food usually nonconsumed by the children. Food consumption was prospectively measured for 24h by analysis of the nonconsumed foods, as well as browsing and extra food brought by the family. Analysis of energy, carbohydrate, lipid, protein, iron and calcium intake was made using Bilnut 3 software (Nutrisoft, France). RESULTS: D2 covered 119+/-37% of the median energy needs versus 89+/-37% for D1 (p<0.05). The median energy needs were more often reached with D2 as compared to D1 (62% versus 32%, p<0.05). Protein intake was high in both groups, more importantly with D2 (266+/-111% of RDA versus 193+/-77% with D1, p<0.05). We observed no difference between the 2 diets in regards of fat/carbohydrate balance and iron intake. Calcium intake was increased with the adapted diet: 68+/-26% of RDA with D2 versus 49+/-26% with D1 (p<0.01). CONCLUSION: Adapting food offers to preference influences food and caloric intakes in hospitalized children. This could be an efficient strategy to prevent acute undernutrition in hospital.     

Neonatology in the 'Pearl of the East'

ABSTRACT Clinicians practising in different regions of the world are often impressed at marked differences in disease patterns witnessed. The bases of most obvious differences are usually socio-economic and genetic, but culture and environment can be equally important. Documenting and assessing such differences is more than just a passing interest. Globalization has resulted in significant movement of people from one area to another. During the past decade, many young Chinese families have emmigratad to Australia, Europe and North America for social and political reasons. Clinicians in these regions will need to be aware of the 'Chinese disease patterns'. The overview highlights some of the more striking differences seen in neonatal medicine between the East (Hong Kong) and the West (Australia/Europe/North America). In addition to the immediate clinical relevance, it is hoped that this review can provide a background from which fruitful research ideas may emerge and to stimulate interest for trainee neonatologists who wish to seek sabbatical experience in Hong Kong.     

On the dynamics of the growth process

Recent publications have provided evidence that the short-term growth process may be regarded as pulsatile rather than constant over time. The possible influence of changes in soft tissue thickness is one reason why it is not possible to draw any final conclusion about the existence or not of such a pulsatile short-term growth pattern. An answer can probably not be reached until a method has been developed that measures longitudinal bone growth without any soft tissue involvement, especially since such a method has recently been used in the rabbit showing that the day-to-day growth rate was linear or continuous.     

Transition to the neonatal nurse practitioner role: making the change from the side to the head of the bed

Role transition is never easy, but is complicated by the experienced neonatal nurse's frustration with reverting to a student role and becoming a novice practitioner, sometimes after years of developing a reputation as an expert nurse. This article discusses this transition, focusing on the skills needed to move successfully from nurse to nurse practitioner. Common to all advanced practice transitions are stages similar to those Benner identifies in her novice-to-expert theory of nursing practice. Feelings of frustration and inadequacy are common during the first year as an NNP. Studies focusing on role transition and role development suggest that a strong nursing identity is important for success in the NNP practice environment. Strategies to enhance the transition are discussed.