全文获取类型
收费全文 | 27629篇 |
免费 | 3943篇 |
国内免费 | 673篇 |
专业分类
耳鼻咽喉 | 187篇 |
儿科学 | 862篇 |
妇产科学 | 330篇 |
基础医学 | 3178篇 |
口腔科学 | 454篇 |
临床医学 | 3218篇 |
内科学 | 4090篇 |
皮肤病学 | 382篇 |
神经病学 | 7822篇 |
特种医学 | 566篇 |
外国民族医学 | 1篇 |
外科学 | 2399篇 |
综合类 | 2123篇 |
现状与发展 | 1篇 |
一般理论 | 1篇 |
预防医学 | 2131篇 |
眼科学 | 239篇 |
药学 | 1674篇 |
32篇 | |
中国医学 | 927篇 |
肿瘤学 | 1628篇 |
出版年
2024年 | 25篇 |
2023年 | 444篇 |
2022年 | 529篇 |
2021年 | 1109篇 |
2020年 | 1530篇 |
2019年 | 1566篇 |
2018年 | 1511篇 |
2017年 | 1505篇 |
2016年 | 1497篇 |
2015年 | 1368篇 |
2014年 | 1835篇 |
2013年 | 2401篇 |
2012年 | 1569篇 |
2011年 | 1612篇 |
2010年 | 1378篇 |
2009年 | 1219篇 |
2008年 | 1269篇 |
2007年 | 1143篇 |
2006年 | 1037篇 |
2005年 | 881篇 |
2004年 | 826篇 |
2003年 | 852篇 |
2002年 | 754篇 |
2001年 | 612篇 |
2000年 | 478篇 |
1999年 | 329篇 |
1998年 | 250篇 |
1997年 | 256篇 |
1996年 | 201篇 |
1995年 | 224篇 |
1994年 | 192篇 |
1993年 | 170篇 |
1992年 | 175篇 |
1991年 | 143篇 |
1990年 | 134篇 |
1989年 | 128篇 |
1988年 | 104篇 |
1987年 | 87篇 |
1986年 | 103篇 |
1985年 | 170篇 |
1984年 | 130篇 |
1983年 | 107篇 |
1982年 | 100篇 |
1981年 | 75篇 |
1980年 | 50篇 |
1979年 | 40篇 |
1978年 | 35篇 |
1977年 | 25篇 |
1976年 | 23篇 |
1969年 | 10篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
随着医疗救治水平的不断提高,早产儿的存活率明显增加,但早产常易伴发脑性瘫痪、运动和认知障碍等一系列神经发育问题,给家庭、社会带来沉重负担。生命早期大脑发育迅速,可塑性强,是进行早期运动干预的良好时机。本文就早产儿早期神经运动干预进行综述,旨在为临床医护人员对早产儿进行适宜有效的运动干预提供参考。 相似文献
2.
3.
《The Journal of thoracic and cardiovascular surgery》2023,165(1):327-334.e2
ObjectiveSeveral trials have recently reported the safety of pulmonary resection after neoadjuvant immunotherapy with encouraging major pathological response rates. We report the detailed adverse events profile from a recently conducted randomized phase II trial in patients with resectable non–small cell lung cancer treated with neoadjuvant durvalumab alone or with sub-ablative radiation.MethodsWe conducted a randomized phase II trial in patients with non–small cell lung cancer clinical stages I to IIIA who were randomly assigned to receive neoadjuvant durvalumab alone or with sub-ablative radiation (8Gyx3). Secondary end points included the safety of 2 cycles of preoperative durvalumab with and without radiation followed by pulmonary resection. Postoperative adverse events within 30 days were recorded according to the National Cancer Institute Common Terminology Criteria for Adverse Events (version 4.0).ResultsSixty patients were enrolled and randomly assigned, with planned resection performed in 26 patients in each arm. Baseline demographics and clinical variables were balanced between groups. The median operative time was similar between arms: 128 minutes (97-201) versus 146 minutes (109-214) (P = .314). There was no 30- or 90-day mortality. Grade 3/4 adverse events occurred in 10 of 26 patients (38%) after monotherapy and in 10 of 26 patients (38%) after dual therapy. Anemia requiring transfusion and hypotension were the 2 most common adverse events. The median length of stay was similar between arms (5 days vs 4 days, P = .172).ConclusionsIn this randomized trial, the addition of sub-ablative focal radiation to durvalumab in the neoadjuvant setting was not associated with increased mortality or morbidity compared with neoadjuvant durvalumab alone. 相似文献
4.
目的 探讨丹青胶囊联合他扎罗汀倍他米松治疗银屑病的临床疗效.方法 选取2019年6月—2021年6月在天津市职业病防治院门诊皮肤科就诊治疗的114例银屑病患者,根据随机数字法分为对照组和治疗组,每组各57例.对照组患者给予他扎罗汀倍他米松乳膏,洗净患处,待皮肤干爽后,将适量本品均匀涂抹于患处,1次/d.治疗组患者在对照组治疗基础上口服丹青胶囊,4粒/次,3次/d.两组患者均连续治疗7 d.观察两组患者的临床疗效和临床症状好转时间,比较两组治疗前与治疗1、4、8周的皮损面积和严重程度指数(PASI)评分和血清炎性因子水平.结果 治疗后,治疗组总有效率是98.25%,显著高于对照组的82.46%(P<0.05).治疗后,治疗组患者皮损暗红、皮损肥厚、皮肤瘙痒、皮肤疼痛等症状好转时间均显著短于对照组(P<0.05).治疗后,两组PASI评分均较治疗前显著降低(P<0.05);治疗1、4、8周治疗组PASI评分显著低于对照组(P<0.05).治疗后,两组患者血清炎性因子白细胞介素6(IL-6)、白细胞介素17(IL-17)、肿瘤坏死因子α(TNF-α)、干扰素-γ(IFN-γ)水平均较治疗前显著降低(P<0.05);治疗后,治疗组血清炎性因子水平显著低于对照组(P<0.05).结论 丹青胶囊联合他扎罗汀倍他米松治疗银屑病效果明显,能显著降低炎性因子水平,并有助于改善皮损情况,值得临床推广应用. 相似文献
5.
6.
目的 探讨主动脉夹层术后患者心理状况、躯体症状对其生活质量的影响及作用机制,为制订干预计划提供参考。方法 采用广泛性焦虑障碍量表、患者健康问卷抑郁量表、躯体症状量表、12项简明健康状况调查表对327例主动脉夹层术后患者进行调查,根据相关性分析结果提出假设,应用AMOS软件进行结构方程模型分析。结果 主动脉夹层术后患者生活质量得分(81.56±7.36)分,焦虑得分2.00(0, 3.00)分,抑郁得分2.00(0, 3.00)分,躯体症状得分5.00(2.00, 8.00)分;焦虑、抑郁、躯体症状对生活质量有直接影响,焦虑、抑郁通过躯体症状对生活质量有间接影响(均P<0.05)。结论 主动脉夹层术后患者生活质量处于中等偏上水平,应早期对主动脉夹层术后患者的心理状况与躯体症状进行动态评估与监测,及时进行心理干预和症状管理,以改善其生活质量。 相似文献
7.
9.
《Journal of vascular and interventional radiology : JVIR》2022,33(8):964-971.e2
PurposeTo assess the cost effectiveness of microwave ablation (MWA) and stereotactic body radiotherapy (SBRT) for patients with inoperable stage I non–small cell lung cancer (NSCLC).Materials and MethodsA literature search was performed in MEDLINE with broad search clusters. A decision-analytic model was constructed over a 5-year period. The model incorporated treatment-related complications and long-term recurrence. All clinical parameters were derived from the literature with preference to long-term prospective trials. A healthcare payers’ perspective was adopted. Outcomes were measured in quality-adjusted life years (QALYs) extracted from prior studies and U.S. dollars from Medicare reimbursements and prior studies. Base case calculations, probabilistic sensitivity analysis with 10,000 Monte Carlo simulations, and multiple 1- and 2-way sensitivity analyses were performed.ResultsMWA yielded a health benefit of 2.31 QALYs at a cost of $195,331, whereas SBRT yielded a health benefit of 2.33 QALYs at a cost of $225,271. The incremental cost-effectiveness ratio was $1,480,597/QALY, indicating that MWA is the more cost-effective strategy. The conclusion remains unchanged in probabilistic sensitivity analysis with MWA being the optimal cost strategy in 99.84% simulations. One-way sensitivity analyses revealed that MWA remains cost effective when its annual recurrence risk is <18.4% averaged over 5 years, when the SBRT annual recurrence risk is >1.44% averaged over 5 years, or when MWA is at least $7,500 cheaper than SBRT.ConclusionsMWA appears to be more cost effective than SBRT for patients with inoperable stage I NSCLC. 相似文献
10.
《Advances in medical sciences》2022,67(1):163-169
PurposeThe variation in the immune response to Bartonella spp. infection in humans remains unclear. The present study compares the expression of selected interleukins, cytokines and cathelicidin (LL-37) in rheumatology clinic patients suffering from musculoskeletal symptoms with healthy blood donors. The patients had previously been tested for the presence of Bartonella henselae antibodies.MethodsGene expression of LL-37, interleukin (IL)-2, IL-4, IL-6, IL-12, interferon-(IFN)-γ, and tumor necrosis factor (TNF-α)-α was determined in blood samples using quantitative Polymerase Chain Reaction (qPCR). Statistical analysis was prepared with STATISTICA.ResultsStatistically significant differences in the mRNA levels of the tested cytokines (IFN-γ, TNF-α, IL-2, IL-4, IL-6, IL-12; p<0.0001) were observed between the healthy controls and patients; however, no difference was observed for LL37 mRNA (p ?= ?0.1974). No significant differences in mRNA expression were observed between IgG in anti-Bartonella seropositive and seronegative individuals (p>0.05). The only significant differences between the Bartonella spp. DNA positive and negative patients, indicated by PCR, were observed for TNF-α and IL-12 mRNA (p ?= ?0.0045 and p ?= ?0.0255, respectively).ConclusionA broadly similar immune response to the tested cytokines was observed among the participants irrespective of anti-Bartonella spp. IgG seropositivity. However, the Bartonella DNA-positive participants demonstrated significantly lower expression of IL-12 and TNF-α mRNA; this may indicate that these bacteria have a suppressive influence on the immune system. 相似文献