首页 | 官方网站   微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   82篇
  免费   3篇
  国内免费   1篇
医药卫生   86篇
  2023年   1篇
  2022年   3篇
  2021年   8篇
  2020年   3篇
  2019年   1篇
  2018年   1篇
  2016年   3篇
  2014年   1篇
  2013年   1篇
  2012年   3篇
  2011年   5篇
  2010年   3篇
  2009年   2篇
  2008年   3篇
  2007年   4篇
  2006年   7篇
  2005年   5篇
  2004年   4篇
  2003年   5篇
  2002年   5篇
  2001年   2篇
  2000年   2篇
  1999年   1篇
  1998年   1篇
  1996年   1篇
  1994年   1篇
  1992年   4篇
  1991年   2篇
  1990年   1篇
  1986年   1篇
  1977年   1篇
  1974年   1篇
排序方式: 共有86条查询结果,搜索用时 312 毫秒
71.
After many years of study, development and experimentation of open PACS and Image workstation solutions including management of medical data and signals (DPACS project), the research and development at the University of Trieste have recently been directed towards Java-based, IHE compliant and multi-purpose servers and clients. In this paper an original Image-Data Manager/Archiver (O3-DPACS) and a universal Image-Data Display (HDW2) are described. O3-DPACS is also part of a new project called Open Three (O3) Consortium, promoting Open Source adoption in e-health at European and world-wide levels. This project aims to give a contribution to the development of e-health through the study of Healthcare Information Systems and the contemporary proposal of new concepts, designs and solutions for the management of health data in an integrated environment: hospitals, Regional Health Information Organizations and citizens (home-care, mobile-care and ambient assisted living).  相似文献   
72.
In order to facilitate the control of tuberculosis (TB), the World Health Organization (WHO) has defined a standardised short-course chemotherapy and a strategy, directly observed therapy. In 2000, WHO surveillance of TB treatments in Europe recorded a successful outcome rate of 77%. The aim of this report is to estimate treatment outcomes in European countries based on published studies and to identify their determinants. A systematic review was conducted of published reports of TB treatment outcomes in Europe. Meta-analysis, meta-regression and subgrouping were used to pool treatment outcomes and analyse associations with mean age, sex, immigration status and multidrug resistance. Of the 197 articles identified in the search, 26 were eligible for the review; 74.4% of outcomes were successful, 12.3% were unsuccessful and 6.8% of patients died. Heterogeneity was high for all outcomes. National estimates were possible for six countries. Multidrug resistance was inversely associated with successful outcome, which were fewer in populations with >9% multidrug-resistant TB, and in patients aged <44 yrs. Successful tuberculosis treatment outcomes were below the 85% threshold suggested by the World Health Organization. There was an inverse association with levels of multidrug-resistant tuberculosis. The unexplained heterogeneity between the studies for unsuccessful outcomes seems to be due to differing interpretations given to World Health Organization definitions.  相似文献   
73.

Objective

The objective of this study is to evaluate patient concerns about in vitro fertilization (IVF) errors and electronic witness systems (EWS) satisfaction.

Design

The design of this study is a prospective single-center cohort study.

Setting

The setting of this study was located in the private IVF center.

Patient(s)

Four hundred eight infertile patients attending an IVF cycle at a GENERA center in Italy were equipped with an EWS.

Intervention(s)

Although generally recognized as a very rare event in IVF, biological sample mix-up has been reported in the literature. For this reason, some IVF laboratories have introduced EWS with the aim to further reduce the risk of error during biological samples handling. Participating patients received a questionnaire developed through a Likert scale ranging from 1 to 6.

Main outcomes measure(s)

Patient concerns about sample mix-up without and with an EWS were assessed.

Result(s)

90.4 % of patients expressed significant concerns relating to sample mix-up. The EWS reduced these concerns in 92.1 % of patients, 97.1 % of which were particularly satisfied with the electronic traceability of their gametes and embryos in the IVF laboratory. 97.1 % of patients felt highly comfortable with an IVF center equipped with an EWS. Female patients had a significantly higher appreciation of the EWS when compared to their male partners (p?=?0.029). A significant mix-up event occurred in an Italian hospital during the study and patient’s satisfaction increased significantly towards the use of the EWS after the event (p?=?0.032).

Conclusion(s)

EWS, by sensibly reducing the risk for sample mix-up in IVF cycles, has been proved to be a trusted strategy from patient’s perspective.
  相似文献   
74.

Background:

Evidence on the association between short-term exposure to desert dust and health outcomes is controversial.

Objectives:

We aimed to estimate the short-term effects of particulate matter ≤ 10 μm (PM10) on mortality and hospital admissions in 13 Southern European cities, distinguishing between PM10 originating from the desert and from other sources.

Methods:

We identified desert dust advection days in multiple Mediterranean areas for 2001–2010 by combining modeling tools, back-trajectories, and satellite data. For each advection day, we estimated PM10 concentrations originating from desert, and computed PM10 from other sources by difference. We fitted city-specific Poisson regression models to estimate the association between PM from different sources (desert and non-desert) and daily mortality and emergency hospitalizations. Finally, we pooled city-specific results in a random-effects meta-analysis.

Results:

On average, 15% of days were affected by desert dust at ground level (desert PM10 > 0 μg/m3). Most episodes occurred in spring–summer, with increasing gradient of both frequency and intensity north–south and west–east of the Mediterranean basin. We found significant associations of both PM10 concentrations with mortality. Increases of 10 μg/m3 in non-desert and desert PM10 (lag 0–1 days) were associated with increases in natural mortality of 0.55% (95% CI: 0.24, 0.87%) and 0.65% (95% CI: 0.24, 1.06%), respectively. Similar associations were estimated for cardio-respiratory mortality and hospital admissions.

Conclusions:

PM10 originating from the desert was positively associated with mortality and hospitalizations in Southern Europe. Policy measures should aim at reducing population exposure to anthropogenic airborne particles even in areas with large contribution from desert dust advections.

Citation:

Stafoggia M, Zauli-Sajani S, Pey J, Samoli E, Alessandrini E, Basagaña X, Cernigliaro A, Chiusolo M, Demaria M, Díaz J, Faustini A, Katsouyanni K, Kelessis AG, Linares C, Marchesi S, Medina S, Pandolfi P, Pérez N, Querol X, Randi G, Ranzi A, Tobias A, Forastiere F, MED-PARTICLES Study Group. 2016. Desert dust outbreaks in Southern Europe: contribution to daily PM10 concentrations and short-term associations with mortality and hospital admissions. Environ Health Perspect 124:413–419; http://dx.doi.org/10.1289/ehp.1409164  相似文献   
75.
Cholinesterase (ChE) levels (Ellman method) were monitored in 90 subjects (69 males and 21 females) exposed to carbamate and organophosphate pesticides (78 agricultural workers and 12 pesticide vendors). Pre-exposure baseline values of plasma and red blood cell cholinesterase activities were defined for each subject with two blood samples (23 workers) or three blood samples (59 workers) taken almost thirty days after the last exposure. After control of intra-individual variation, 8 subjects with only one pre-exposure value and 13 with a coefficient of variation above 30% were excluded. For the other 59 subjects, the intra-individual variation of erythrocyte ChE (16%) was similar to the inter-individual one (15%), whereas the inter-individual variation of plasma ChE (21%) was higher than the intra-individual one (14%). Laboratory variation for plasma ChE measurements was 8%. Baseline values were analyzed (ANOVA) for sex, age, task and hour and season of sampling. Both erythrocyte and plasma enzymes, corrected for hematocrit, were lower in females. Plasma cholinesterase activity was lower in "re-entry" agricultural workers and in pesticide vendors. Post-exposure cholinesterase activity was measured in 54 workers within a few (1-21) days after last handling. Average relative reduction was 15.2% (95% C.I. = 4.9%-25.5%) in erythrocyte cholinesterase activity and 29.1% (95% C.I. = 18.2%-40.1%) in plasma cholinesterase activity. The one-way variance analysis showed marked plasma ChE reduction in mixers, loaders and appliers (36%, 95% C.I. = 24%-48%) and in parathion handlers (35%, 95% C.I. = 21%-49%. No significant reduction in blood cell cholinesterase activity in relation to task and to pesticide handled was observed. We conclude that the intra-individual variations of the baseline values were higher for three repetitions (88% and 84% of the population were within a variability of less than 30%, for AChE and for ChE respectively) than for two repetitions (91% and 88% of the population were within 30% of variability for AChE and for ChE respectively). The figures show a greater sensitivity of plasma ChE activity in acute exposure, probably due to a poor reliability in detection of erythrocyte ChE by local laboratories. The maximum reduction (38%, 95% C.I. = 22%-53%) in plasma ChE activity was observed within six days of the last exposure in loaders and appliers.  相似文献   
76.
77.
The study investigated the effects of the dopamine-somatostatin chimeric compound BIM-23A760 on cell proliferation and apoptosis in cultured cells from human non-functioning pituitary tumors (NFPTs). Both BIM-23A760 and the dopaminergic agonist BIM-53097 induced a significant inhibition of cell proliferation associated with increased p27 expression, together with a significant increase in caspase-3 activity. Conversely, null or marginal effects were elicited by somatostatin analogs. Moreover, BIM-23A760 and BIM-53097 induced ERK1/2 and p38 phosphorylation and the blockade of these pathways prevented both the antiproliferative and the pro-apoptotic effects of these drugs. In conclusions the chimeric compound BIM-23A760 is able to exert cytostatic and cytotoxic effects in NFPTs, these phenomena being mainly mediated by DR2D and involving ERK1/2 and p38 pathways activation.  相似文献   
78.
Mass gatherings are believed to increase the transmission of infectious diseases although surveillance systems have shown a low impact. The Catholic Jubilee was held in Rome, Italy in 2000. We conducted a case-control study to analyse the risk factors of giardiasis among residents. All diseases reported to the laboratory surveillance system from January 2000 to May 2001 were compared with hospital controls concurrently selected in the same season as cases and frequency-matched for age and birth country. Fifty-two cases (44.1%) and 72 controls were enrolled. In the multivariable analysis factors associated with giardiasis among adults were: travelling abroad (OR 24.2, P>0.01), exposure to surface water (OR 4.80, P=0.05), high educational level (OR 3.8, P=0.03). Having a maid from a high-prevalence country was independently associated (OR 2.3) although not statistically significant. This is the only exposure that changed during the Jubilee.  相似文献   
79.
80.
Between 1985 and 1989, 36 consecutive male patients with advanced germ-cell tumors, who had failed to be cured with either the cisplatin, vinblastine, bleomycin (PVB) or the cisplatin, etoposide, bleomycin (PEB) combinations, entered either of two modified salvage therapy regimens consisting of cisplatin, etoposide, and ifosfamide (PEI) or cisplatin, vinblastine and ifosfamide (PVI). All patients had evidence of active disease. Ifosfamide was given at the dosage of 2.5 gr/m2 (with mesna protection) on days 1 and 2; etoposide and cisplatin were given at the dosage of 100 mg/m2 and 40 mg/m2, respectively, on days 3 to 5. In the PVI schedule, vinblastine 6 mg/m2 was given on day 3. Overall, 20 (56%, C.I. 39 to 72) patients entered complete response (CR) or achieved disease-free status (NED) with post-chemotherapy surgery. After a follow-up of 2 to 7 years, 15 patients (42%, C.I. 24 to 58) remain alive and free of disease. None of the 9 patients unresponsive to the first-line therapy and/or with extragonadal primaries entered CR or achieved the NED status, versus 20 (74%, C.I. 58 to 91) of the 27 patients with primary testicular tumors who were responsive to the first-line therapy (p less than 0.001). PEI was used in 20 of these 27 patients, with excellent results (90% CR and 70% continuously NED) independently of primary therapy, PVB or PEB. By contrast, only 2 of the 7 patients treated with PVI following PEB entered CR. Toxicity was not life-threatening. Nine (25%) patients suffered granulocytopenic fever and 3 (8%) required platelet transfusions.(ABSTRACT TRUNCATED AT 250 WORDS)  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-23

京公网安备 11010802026262号