全文获取类型
收费全文 | 49383篇 |
免费 | 4639篇 |
国内免费 | 997篇 |
专业分类
耳鼻咽喉 | 373篇 |
儿科学 | 1403篇 |
妇产科学 | 928篇 |
基础医学 | 2272篇 |
口腔科学 | 991篇 |
临床医学 | 7591篇 |
内科学 | 8050篇 |
皮肤病学 | 475篇 |
神经病学 | 3616篇 |
特种医学 | 904篇 |
外科学 | 5158篇 |
综合类 | 5347篇 |
一般理论 | 6篇 |
预防医学 | 10742篇 |
眼科学 | 340篇 |
药学 | 4318篇 |
76篇 | |
中国医学 | 564篇 |
肿瘤学 | 1865篇 |
出版年
2024年 | 63篇 |
2023年 | 1139篇 |
2022年 | 1967篇 |
2021年 | 2585篇 |
2020年 | 2648篇 |
2019年 | 2377篇 |
2018年 | 2372篇 |
2017年 | 2251篇 |
2016年 | 2347篇 |
2015年 | 2080篇 |
2014年 | 4303篇 |
2013年 | 4806篇 |
2012年 | 3217篇 |
2011年 | 3487篇 |
2010年 | 2511篇 |
2009年 | 2311篇 |
2008年 | 2242篇 |
2007年 | 2152篇 |
2006年 | 1731篇 |
2005年 | 1498篇 |
2004年 | 1130篇 |
2003年 | 938篇 |
2002年 | 775篇 |
2001年 | 727篇 |
2000年 | 588篇 |
1999年 | 409篇 |
1998年 | 316篇 |
1997年 | 298篇 |
1996年 | 257篇 |
1995年 | 235篇 |
1994年 | 225篇 |
1993年 | 168篇 |
1992年 | 163篇 |
1991年 | 131篇 |
1990年 | 98篇 |
1989年 | 81篇 |
1988年 | 67篇 |
1987年 | 58篇 |
1986年 | 43篇 |
1985年 | 55篇 |
1984年 | 44篇 |
1983年 | 23篇 |
1982年 | 27篇 |
1981年 | 21篇 |
1980年 | 14篇 |
1979年 | 12篇 |
1978年 | 4篇 |
1977年 | 6篇 |
1975年 | 7篇 |
1974年 | 4篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
《Journal of pediatric surgery》2023,58(7):1274-1280
BackgroundPerianal abscesses and anal fistulas are common. The principle of intention-to-treat has not been considered in previous systemic reviews. Thus, the comparison between primary and post-recurrence management was confused, and the recommendation of primary treatment is obscure. The current study aims to identify the optimal initial treatment for pediatric patients.MethodsUsing PRISMA guidelines, studies were identified from MEDLINE, EMBASE, PubMed, Cochrane Library, and Google Scholar without any language or study design restriction. The inclusion criteria include original articles or articles with original data, studies of management for a perianal abscess with or without anal fistula, and patient age of <18 years. Patients with local malignancy, Crohn's disease, or other underlying predisposing conditions were excluded. Studies without analyzing recurrence, case series of <5, and irrelevant articles were excluded in the screening stage. Of the 124 screened articles, 14 articles had no full texts or detailed information. Articles written in a language other than English or Mandarin were translated by Google Translation first and confirmed with native speakers. After the eligibility process, studies that compared identified primary managements were then included in the qualitative synthesis.ResultsThirty-one studies involving 2507 pediatric patients met the inclusion criteria. The study design consisted of two prospective case series of 47 patients and retrospective cohort studies. No randomized control trials were identified. Meta-analyses for recurrence after initial management were performed with a random-effects model. Conservative treatment and drainage revealed no difference (Odds ratio [OR], 1.222; 95% Confidential interval [CI]: 0.615–2.427, p = 0.567). Conservative management had a higher risk of recurrence than surgery without statistical significance (OR 0.278, 95% CI: 0.109–0.707, p = 0.007). Compared with incision/drainage, surgery can prevent recurrence remarkably (OR 4.360, 95% CI: 1.761–10.792, p = 0.001). Subgroup analysis of different approaches within conservative treatment and operation was not performed for lacking information.ConclusionStrong recommendations cannot be made due to the lack of prospective or randomized controlled studies. However, the current study based on real primary management supports initial surgical intervention for pediatric patients with perianal abscesses and anal fistula to prevent recurrence.Level of evidenceType of study: Systemic review; Evidence level: Level II. 相似文献
2.
3.
目的探讨对前列腺癌患者采用一体化管理老年综合评估(CGA)护理模式对其心理因素和生活质量的影响。方法选取2020年3月至2021年3月在南京市第一医院就诊,确诊为前列腺癌,且首次行腹腔镜下前列腺癌根治术的患者96例,随机分为对照组、观察1组、观察2组,各32例。对照组为住院后采用常规护理模式进行护理,观察1组为入院后行CGA干预组,观察2组为一体化管理的CGA干预组。三组患者分别在干预前、出院时,进行焦虑自评量表(SAS)、抑郁自评量表(SDS)测评;在干预前、术后30 d,进行生活质量核心量表QLQ-C30(V3.0)和前列腺癌特异性补充量表QLQ-PR25测评。结果出院时,观察2组SAS、SDS评分显著优于对照组及观察1组(P<0.05);术后30 d,观察2组生活质量QLQ-C30、QLQ-PR25评分显著优于对照组及观察1组(P<0.05)。结论一体化管理CGA护理模式可有效改善前列腺癌患者的心理状态,提高其术后生活质量。 相似文献
4.
5.
6.
《Enfermería clínica》2022,32(3):171-183
IntroductionAgeing is a period of physical and psychological changes. Inactivity is one of the biggest problems among the older adult population increasing the risk of sarcopenia and chronic diseases. Physical activity is an effective intervention to improve health outcomes. In recent years, there has been an increase in the use of technology, with health technology tools (ICT) appearing as an intervention to increase physical activity and improve associated health problems.ObjectiveIn this review, we evaluated the effectiveness of health technology to increase physical activity and to improve cardiovascular parameters in older adults.MethodologyStudies with a great variety of health technology tools to increase physical activity levels, and that evaluated the effect of that increase on cardiovascular parameters were included by searching the main databases.ResultsEleven studies reporting the use of a variety of ICT tools were included in this review. Despite these differences, the effectiveness of health technology tool interventions has been demonstrated in increasing physical activity and reducing cardiovascular parameters.DiscussionThe lack of adherence of older adults to health technology would be a disadvantage, but it has been shown that younger older adults are more familiar with health technology tools and the number using them is increasing.ConclusionHealth technology tools show effectiveness in increasing physical activity in older adults and improving cardiovascular parameters. 相似文献
7.
目的研究冠状动脉慢血流现象(CSFP)患者的危险因素和分析累及冠状动脉病变的特点。方法回顾性收集本院2019年1月—2021年1月因疑似冠心病行冠状动脉造影术的514例患者,分析患者的临床资料、实验室指标及冠状动脉造影结果等相关资料,按照TIMI血流分级分为慢血流组(n=288)和对照组(n=226),比较两组之间的差异,并通过logistics回归分析探讨CSFP患者的危险因素。结果 (1)两组间在性别、民族、吸烟及饮酒史上存在统计学差异(P<0.05)。(2)CSFP组的血红蛋白、游离三碘甲状原氨酸、血肌酐值、血尿酸水平、空腹血糖水平和左室舒张末期大小均高于对照组(P<0.05);而CSFP组的血小板分布宽度、游离甲状腺素、总胆固醇、高密度脂蛋白胆固醇、低密度脂蛋白胆固醇、载脂蛋白A1和白蛋白水平均低于对照组(P<0.05);(3)CSFP以三支血管病变最多见,为124例(43.0%),而单支血管病变和双支血管病变病例数一样,均为82例(28.5%)。单支血管病变中最多见的是前降支67例(81.7%),其次是右冠状动脉12例(14.6%),左回旋支较少见;(4)多因素logistic回归分析发现:性别、民族、游离甲状腺素、载脂蛋白A1和白蛋白水平是CSFP患者的独立危险因素。结论 (1)男性、少数民族、游离甲状腺素、载脂蛋白A1和白蛋白水平是CSFP的独立危险因素;(2)CSFP更常见于三支冠状动脉病变组,单支冠状动脉病变者更常见于左前降支。 相似文献
8.
ADHD儿童认知障碍的主要特征之一是执行功能损害,涉及包括前额叶皮层在内的特定脑区域及多层级脑网络异常。执行功能按照功能性分为冷-热两方面:冷执行功能损害主要表现于反应抑制、工作记忆以及认知灵活性等;热执行功能损害通常涉及延迟满足、赏罚相关决策、自我调节及情绪调节等。ADHD儿童的执行功能评估应基于可信范式进行文化适应性调整。临床干预不能单一聚焦于冷执行功能,需关注儿童的身体发育以及热执行功能(情绪社会方面)的发展进程,结合其他共病与心理状况,进行全面的动态随访与干预,以达到最佳的长期疗效。 相似文献
9.
10.