首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献，搜索用时 468 毫秒
1.
Objective： To introduce the clinical effect among patients who received an unwrapped orbital implant with high density porous polyethylene material （Medpor） after enucleation or evisceration. Methods： Retrospective analysis of a series of 302 patients with anophthalmia who underwent placement of an unwrapped high density porous polyethylene orbital implant. We compared the patients （n=180） who accepted primary implant placement with those （n=122） who accepted secondary implant placement. Parameters evaluated included： age at time of surgery, date of surgery, sex, implant type and size, surgery type, the surgical procedure and technique performed, and complications. Results： The time of follow-up ranged from 2.0 to 58.0 months （mean 32.5 months）. A total of 5 of 302 （1.66%） cases had documented postoperative complications. The following problems were noted after surgery： implant exposure, 3 patients （0.99%）; implant removed due to orbital infection, 1 patient （0.34%）; ptosis, 1 patient （0.34%）. There were no significant complications＇observed in other 297 cases and all implants showed good orbital motility. The clinical effect of primary implant placement is better than that of secondary placement. Conclusion： High density porous polyethylene material can be used successfully as an unwrapped orbital implant in anopthalmic socket surgery with minimal complications. The material is well tolerated, nonantigenic and has low rate of infection and migration.  相似文献   

2.

Objective

To compare postoperative outcomes of full-bed deep anterior lamellar keratoplasty (DALK) with penetrating keratoplasty (PK) in treating keratoconus.

Methods

Seventy-five eyes of 64 patients who received full-bed DALK and 52 eyes of 51 patients who received PK between June 2000 and August 2010 were included in this retrospective study. Full-bed DALK was performed using Yao’s hooking-detaching technique. PK was performed using a standard technique. Intraoperative and postoperative complications, visual acuity, rejection, graft survival, endothelial cell density, corneal sensation recovery, and re-innervation were compared between the two groups.

Results

A best correct visual acuity of 0.5 or better was achieved in 90.7% of eyes after full-bed DALK and in 92.3% of eyes after PK (P=0.75). By the fifth postoperative year, graft endothelial cell loss reached 34.6% in the PK group vs. 13.9% in the full-bed DALK group (P<0.001). There were no statistical differences in corneal sensitivity recovery or corneal re-innervation between the groups (P>0.05). Intraoperative microperforation occurred in seven out of 75 (9.3%) eyes with a temporally postoperative double anterior chamber in two eyes in the full-bed DALK group. Postoperative complications in the PK vs. the full-bed DALK groups respectively were: rejection (7.7% vs. 0%, P=0.015), high intraocular pressure (IOP) (46.2% vs. 1.3%, P<0.001), secondary glaucoma (9.6% vs. 0%, P=0.006), complicated cataract (19.2% vs. 0%, P<0.001), and wound dehiscence (9.6% vs. 0%, P=0.006).

Conclusions

Both full-bed DALK and PK can offer long-term satisfactory visual outcomes for keratoconus. Graft rejection, secondary glaucoma, complicated cataracts, and constant endothelial cell loss were observed in eyes only after PK.  相似文献   

3.
Surgical results of pars plana vitrectomy combined with phacoemulsification   总被引：2，自引：0，他引：2  
INTRODUCTION Cataract is frequently associated with vitreo-retinal pathology such as vitreous hemorrhage,retinal detachment,proliferative vitreoretinal disease,espe-cially in patients with diabetes mellitus,ocular trauma and elderly population(Vatavuk and Pentz,2004;Vatavuk et al.,2005).The cataract can be removed together with vitrectomy or later on in a separate surgical procedure(Tyagi et al.,1998;Lam et al.,1998).The primary indication for the primary re-moval of cataract and vitrect…  相似文献   

4.
Impulsive second-grade children received strategy training or strategy training combined with primary or secondary reinforcement. All training groups showed significantly longer response latencies and significantly fewer errors on the Matching Familiar Figures test immediately following training. The reinforcement groups had significantly longer latencies than the training-only group, and there was some indication that primary reinforcement was more effective than secondary reinforcement in producing response delay. The 3 training groups did not differ significantly on error scores.  相似文献   

5.
Following 45 placements to a wet-mash reward, groups of rats received 0, 10, 20, or 40 frustration-conditioning trials during which primary frustration was paired with the apparatus cues plus a distinctive CS. Other groups received 0, 10, or 20 pairings of primary frustration and apparatus cues alone. In the CS condition, learning of a hurdle-jumping response which terminated the CS was nonmonotonically related to the number of frustration-conditioning trials on the first of 2 test days. Performance increased with the number of conditioning trials up to 20, then decreased following 40 such trials. Among groups which did not receive the CS during conditioning or testing, only subjects in the zero-pairing condition showed evidence of learning. The results were interpreted as supporting the conclusion that conditioned frustration had acquired aversive motivational properties since its effectiveness was found to vary systematically with the number of conditioning trials. It was further concluded that the superiority of hurdle-jumping performance by CS groups relative to NCS groups was the result of both a higher level of frustrative motivation and greater frustration reduction following the response for the former groups.  相似文献   

6.
Many students in Britain, especially those training for the professions, do parts of their courses in the form of placements in the field. Most such placements are compulsory. During placements students are the joint concern of their tutors on the campus and their mentors in the field. The placements on the different courses seem dramatically different. For example, some placements are in primary schools, some in hospital wards, some in factory pharmacies and some in electrical power stations. This study shows, however, that despite such obvious differences in the placement settings, student feelings about placement can be remarkably similar. For staff whose courses include placement there are issues which they could usefully discuss in common.  相似文献   

7.
随班就读和特殊学校是我国特殊儿童的两种主要教育安置形式。究竟哪种安置形式对特殊儿童最适合,以便特殊儿童在合适的教育安置形式下获得最大的发展,我们可以从特殊儿童的不良情绪与学校适应这个视角展开讨论。本文通过比较两种不同教育安置形式下智力落后儿童的焦虑、抑郁情绪与学校适应是否存在水平上的区别,各心理变量之间的相互关系如何,对这一问题进行探讨。  相似文献   

8.
OBJECTIVE: This study compares homeless women who had childhood histories of foster care or other out-of-home placement to those who have not. METHOD: A countywide probability sample of homeless women (n = 179) received structured interviews. RESULTS: One-third of homeless women reported being raised apart from their parents. Among women with children under age 18, most (61.5%) had children who had lived in foster care or other out-of-home placements. Variables associated with homeless mothers' children living in foster care or other out-of-home placements were: Child was school-age, mother was age 35 or older, mother had a current alcohol or drug use disorder, mother experienced childhood sexual abuse, and mother ran away from home (when under age 18). CONCLUSIONS: Parenting is difficult for homeless mothers who may need to place their children with others to facilitate school attendance. Parent-child interaction may be problematic in family shelters where privacy is rare. Thus, programs promoting family preservation for homeless mothers should provide parenting support as well as permanent housing.  相似文献   

9.
This paper presents 6-month follow-up on a group of 16 infants hospitalized during the first months of life for non-organic failure to thrive (N-O FTT) and their mothers. Eight of these infants were placed in foster care and eight were returned home with their parents following hospitalization. The effects of placement on infant outcomes were examined through comparison of developmental scores and weight percentile changes, and the implications of foster care placements for mother-infant interactions were examined through analysis of patterns of interaction in videotaped sessions of feeding and play six months after hospital discharge. This analysis snowed that (1) mothers in both groups failed to make significant progress in resolving their own emotional or psychological conficts through treatment available; (2) weight and developmental status of the infants did not improve as expected in either group, and finally that (3) the patterns of interaction between mother and infant showed little change over time, and, regardless of placement at home or in foster care, remained concerning.  相似文献   

10.
The inclusion of an infant/toddler placement in a ‘pathways’ early childhood teaching degree, where students already have qualifications and experience in working with young children, can be problematic. This pilot study investigated student teachers’ views on their infant/toddler (birth-to-two-years) placement. Sixty-six students completing their early childhood education degree at an Australian university responded to a survey seeking their perspectives on the effectiveness of the placement in developing teacher confidence, knowledge and skills, and the quality of the supervision they received. The participants had entered their degree with a two-year Diploma of Children’s Services. Responses indicated significant dissatisfaction with the quality of supervision, the absence of teacher-mentors, and the lack of opportunities to practise new approaches. Participants commented that they ‘already knew’ how to work with this age group, and that they aspired to work with older children. The results align with other findings on factors associated with positive placements, and raise questions about the effectiveness of the infant/toddler placement in its current form.  相似文献   

11.
The researchers report the results of a survey of 140 deaf and hard of hearing students attending integrated or self-contained high school classrooms in the state of New South Wales, Australia. The survey was designed to gather information about educational experiences and preferences for various types of educational placements. There were no gender differences in placement, but there were hearing status differences (81.6% of the students in segregated placements had severe or profound hearing losses, compared to 52.4% of the students in integrated settings). Even though students were aware of the advantages and disadvantages of the different placement options, 80% indicated that they were generally satisfied with their current placement. One implication is that a range of options seems to be more appropriate than a one-size-fits-all model, at least from students' perspectives. The views and preferences of students should be considered when educational provisions are designed for students who are deaf or hard of hearing.  相似文献   

12.
In Experiment I, rats which had received six partially reinforced runway acquisition trials, with a reward magnitude of 60 sec access to wet mash on rewarded trials, showed less persistent responding over highly massed extinction trials than subjects which had received the same acquisition schedule but reward magnitudes of either 1 or 10 45-mg pellets. In Experiment II, rats which had received six partially reinforced placements into one compartment of a two-compartment box, with 60 sec access to mash on rewarded placements, jumped a hurdle faster to escape nonreward than subjects which had received the same reward schedule but 10 45-mg pellets on rewarded trials. The data supported a primary frustration analysis for reward-magnitude manipulations within brief partial-reinforcement schedules.  相似文献   

13.
Out-of-home placement decision-making in child welfare is founded on the best interest of the child in the least restrictive setting. After a child is removed from home, however, little is known about the mechanism of placement decision-making. This study aims to systematically examine the patterns of out-of-home placement decisions made in a state's child welfare system by comparing two models of placement decision-making: a multidisciplinary team decision-making model and a clinically based decision support algorithm. Based on records of 7816 placement decisions representing 6096 children over a 4-year period, hierarchical log-linear modeling characterized concordance or agreement, and discordance or disagreement when comparing the two models and accounting for age-appropriate placement options. Children aged below 16 had an overall concordance rate of 55.7%, most apparent in the least restrictive (20.4%) and the most restrictive placement (18.4%). Older youth showed greater discordant distributions (62.9%). Log-linear analysis confirmed the overall robustness of concordance (odd ratios [ORs] range: 2.9–442.0), though discordance was most evident from small deviations from the decision support algorithm, such as one-level under-placement in group home (OR = 5.3) and one-level over-placement in residential treatment center (OR = 4.8). Concordance should be further explored using child-level clinical and placement stability outcomes. Discordance might be explained by dynamic factors such as availability of placements, caregiver preferences, or policy changes and could be justified by positive child-level outcomes. Empirical placement decision-making is critical to a child's journey in child welfare and should be continuously improved to effect positive child welfare outcomes.  相似文献   

14.
OBJECTIVE: To evaluate the SAFE Homes (SH) program, a short-term group care program for children between 3 and 12 years of age who enter care for the first time. The program aims to improve case outcomes by consolidating resources to facilitate assessment and treatment planning. METHODS: The 1-year outcomes of 342 children who received SAFE Home services and 342 matched foster care (FC) control children were compared. The 684 subjects used in this report were selected from a larger pool of 909 subjects using propensity score matching to control for hidden bias in treatment group assignment. We hypothesized that SAFE Homes would result in greater continuity of care for children (e.g., fewer placements, more placements with siblings and in towns of origin), identification of more relatives for substitute care when needed, reduced use of high-cost restrictive care settings (e.g., residential, inpatient), and reduced rates of re-abuse through earlier detection and provision of services to meet child and family treatment needs. RESULTS: Prior to the initiation of the SAFE Homes program, 75% of the children who entered care in the State experienced three or more placements in the first year. The outcomes of both the SH and FC cases were significantly improved over pre-SAFE Home State statistics. The FC group, however, had comparable or better outcomes on most variables examined. In addition, the total cost for out-of-home care for the children in FC was significantly less, despite the fact that the two groups spent similar amounts of time in care (average time in care: 7 months). This finding held when the total placement cost was calculated using the State reimbursement rate of 206.00 US dollars per day for SAFE Home care (SH: 20,851 US dollars +/- 24,231 US dollars; FC: 8,441 US dollars +/- 21,126 US dollars, p < .001), and a conservative SAFE Home program fee of 85.00 US dollars per day that only considered the child care and custodial staffing costs uniquely associated with the program (SH: 13,314 US dollars +/- 21,718 US dollars; FC: 8,441 US dollars +/-21,126 US dollars, p < .001). CONCLUSION: Improvements in outcomes related to continuity of care can be attained through staff training. The SAFE Home model of care is not cost-effective for first-time placements.  相似文献   

15.
Research consistently reports an educational disadvantage of being looked after. There is a lack of literature pertaining specifically to young people who are placed out of their local authority. The following research reports on an investigation of educational psychologists’ views on the educational implications of non‐local authority residential placements for 12 young people. The findings show that non‐local authority residential placements were usually precipitated by care crises and tended to have a negative impact on the extent to which educational needs were met. One non‐local authority residential placement which allowed continuation of the local authority educational placement had positive educational implications. Action implications for local authorities and educational psychology services are given regarding casework, working with other agencies, local commissioning of establishments and areas for further research.  相似文献   

16.
Objective： To evaluate the efficacy and the indication of basic fibroblast growth factor （bFGF） in the treatment of exposure of orbital implants. Design： Retrospective and observational case series. Methods： We reviewed 41 patients （41 eyes） suffering exposure of orbital implants from Jan. 2000 to June 2006. The study group patients with mild exposure received combined treatment with bFGF and antibiotic drops, and while the control group patients with mild exposure were treated with antibiotic drops only. The study group patients with moderate and severe exposure received combined treatment with bFGF and antibiotic drops, and after 2 months they were subjected to amniotic membrane transplantation, while the control group patients with moderate and severe exposure underwent amniotic membrane transplantation after using antibiotic drops. Observation of the growth of conjunctival epithelium and comparison of the healing rate of the two groups. Results： The healing rates of the mild, moderate and severe exposure study group were 100% and 92.3%. The healing rates of the mild, moderate and severe exposure control group were 55.6% and 66.7% respectively. The difference of the healing rates of the mild exposure study group and the control group was significant （P=-0.033）. And the difference of the healing rates of the moderate and severe exposure study group and the control group was not significant （P=-0.167）. Conclusion： bFGF may promote obviously the healing of orbital implant exposure, particularly it can be the first choice for the treatment of mild degree exposure. For the moderate and severe cases, it can be administered before surgical repair to enhance neovascularization and will tend to increase the success rate of surgical repair.  相似文献   

17.
目的：探讨原发性珠网膜下腔出血的预后因素。方法：通过对126例原发性珠网膜下腔出血住院病人分死亡组,生存组进行比较分析。结果：死亡组中重症出血,近期再次出血,脑动脉痉挛,合并内科并发症明显高于生存组。结论：影响原发性珠网膜下腔出血预后因素主要是重症出血,近期再次出血,脑动脉痉挛,合并内科并发症。针对上述情况,临床上认真观察,积极防治,可减低死亡率。  相似文献   

18.
It has been repeatedly shown that teaching placements are highly valued by student teachers. However, there is very little knowledge on the impact of different forms of support for placements on the learning of future teachers. One model to support placements is Content-Focused CoachingSM. In a quasi-experimental intervention study, we investigated the impact of this form of support using questionnaires, video recordings and interviews with dyads of practical teaching staff and their placement students. The results of the survey show that practical teaching staff trained in Content-Focused CoachingSM (intervention group NIG?=?16) integrated basic elements of this model into their repertoire and that their teaching practice is significantly different to that in the control group (NKG?=?16), which supports placement students in the traditional way. Indicators for learning in the context of lesson meetings, furthermore, give evidence that placement students in the intervention group achieve significantly better learning results than their counterparts supported in the traditional manner. The assessment of teaching quality, based on the video recordings, was also significantly better than for the control group.  相似文献   

19.
[目的]探讨冷凝联合小梁切除术治疗新生血管性青光眼的疗效.[方法]A组12例14眼新生血管性青光眼,施行180°视网膜周边部巩膜外和睫状体冷凝;B组20例22眼,除上述冷凝外,又联合小梁切除术治疗.[结果]随访3～6个月,两组术后视力均无明显改善,A组平均眼压自57.48mmHg降至32mmHg,需要再做冷凝或手术减压;B组随访的15例(16眼)有14眼的眼压<21mmHg,2眼需加用0.1%噻吗心安滴眼治疗,两组术后短期内眼压控制有明显的差异(P<0.05).[结论]冷凝或联合小梁切除术对新生血管性青光眼治疗有较好的短期疗效.  相似文献   

20.
Rigorous research on the efficacy of family group conferencing is rare. This randomized control trial study used an intent-to-treat approach to examine whether a referral to a family group conference (FGC) was associated with re-referrals, substantiated re-referrals, or out-of-home placements among child welfare-involved families receiving in-home services. We found no significant associations between treatment and control group assignment and the three outcomes for the sample as a whole. However, families with more children had higher odds of a re-referral and a substantiated re-referral, families with more than one parent had higher odds of re-referral, and families where a substance abuse services referral was noted had higher odds of out-of-home placement. In interaction models with race, we found that families with African American mothers who were referred for an FGC were more likely to be re-referred compared to other families, but no differences were identified with respect to their rates of substantiated re-referrals or out-of-home placements. Implications are discussed.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号