全文获取类型
收费全文 | 67612篇 |
免费 | 4456篇 |
国内免费 | 1455篇 |
专业分类
耳鼻咽喉 | 1118篇 |
儿科学 | 2296篇 |
妇产科学 | 1079篇 |
基础医学 | 7377篇 |
口腔科学 | 1112篇 |
临床医学 | 5315篇 |
内科学 | 11628篇 |
皮肤病学 | 1088篇 |
神经病学 | 14778篇 |
特种医学 | 1744篇 |
外国民族医学 | 11篇 |
外科学 | 7168篇 |
综合类 | 4169篇 |
现状与发展 | 3篇 |
一般理论 | 4篇 |
预防医学 | 3850篇 |
眼科学 | 1319篇 |
药学 | 5089篇 |
17篇 | |
中国医学 | 2143篇 |
肿瘤学 | 2215篇 |
出版年
2024年 | 184篇 |
2023年 | 1318篇 |
2022年 | 2285篇 |
2021年 | 3478篇 |
2020年 | 3078篇 |
2019年 | 3677篇 |
2018年 | 3549篇 |
2017年 | 2947篇 |
2016年 | 2331篇 |
2015年 | 2317篇 |
2014年 | 4997篇 |
2013年 | 6323篇 |
2012年 | 3940篇 |
2011年 | 4049篇 |
2010年 | 3131篇 |
2009年 | 2966篇 |
2008年 | 2797篇 |
2007年 | 2314篇 |
2006年 | 1888篇 |
2005年 | 1576篇 |
2004年 | 1574篇 |
2003年 | 1326篇 |
2002年 | 1013篇 |
2001年 | 834篇 |
2000年 | 801篇 |
1999年 | 673篇 |
1998年 | 575篇 |
1997年 | 604篇 |
1996年 | 432篇 |
1995年 | 322篇 |
1994年 | 331篇 |
1993年 | 280篇 |
1992年 | 214篇 |
1991年 | 208篇 |
1990年 | 170篇 |
1989年 | 149篇 |
1988年 | 121篇 |
1985年 | 605篇 |
1984年 | 653篇 |
1983年 | 412篇 |
1982年 | 489篇 |
1981年 | 427篇 |
1980年 | 349篇 |
1979年 | 333篇 |
1978年 | 278篇 |
1977年 | 218篇 |
1976年 | 209篇 |
1975年 | 227篇 |
1974年 | 169篇 |
1973年 | 177篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
《The surgeon》2021,19(5):e153-e167
BackgroundBiopharmaceuticals revolutionised inflammatory bowel disease (IBD) treatment. However, it is postulated they compromise immunity, collagen production and angiogenesis resulting in infective post-operative complications and altered wound/anastomotic healing. Research has failed to agree on risks associated with perioperative biologics therefore it was anticipated that a systematic review may provide a consensus and contribute recommendations for clinical practice.MethodsA systematic review conducted as per PRISMA guidelines included a methodical search of PubMed, Google Scholar, EMBASE/Ovid and Cochrane Library using MeSH and/or keywords for papers published between 01/01/1998 and 04/02/2019.The population analysed included adult ulcerative colitis, Crohn's disease, Indeterminate Colitis or IBD unclassified patients. The intervention was intra-abdominal surgery in patients treated with biological therapy in the preceding 12 weeks compared to patients who had intra-abdominal surgery without biological therapy within the defined timeframe. The primary outcome was surgical site infection (SSI) with secondary outcomes including wound dehiscence, intra-abdominal sepsis/abscess, systemic infection and anastomotic breakdown within 30 days post-procedure. Papers were evaluated by two independent reviewers and those included were assessed for quality/bias using the Newcastle–Ottowa scale.Results2064 UC, Crohn's and IC patients were analysed across 8 included studies. Several studies' multivariate analyses demonstrated corticosteroids to be independent predictors of morbidity. There are no increased complications associated with anti-TNFα exposure while vedolizumab increased SSI and small bowel obstruction.ConclusionProspective studies and randomised control trials are required to clarify study outcomes and recommendations published to date. Presently, biologics should continue to be used and considered beneficial in this population. 相似文献
992.
993.
Takafumi Yayama Shigeru Kobayashi Kousuke Awara Kenichi Takeno Tsuyoshi Miyazaki Masafumi Kubota Kohei Negoro Hisatoshi Baba 《Journal of orthopaedic research》2010,28(8):1022-1025
Phalen's test has been one of the most significant of clinical signs when making a clinical diagnosis of idiopathic carpal tunnel syndrome (CTS). However, it is unknown whether intraneural blood flow changes during Phalen's test in patients with CTS. In this study, an intraoperative Phalen's test was conducted in patients with CTS to observe the changes in intraneural blood flow using a laser Doppler flow meter. During Phalen's test, intraneural blood flow showed a sharp decrease, which lasted for 1 min. Intraneural blood flow decreased by 56.7%–100% (average, 78.0%) in the median nerve relative to the blood flow before the test. At 1 min after completing the test, intraneural blood flow returned to the baseline value. After carpal tunnel release, there was no marked decrease in intraneural blood flow. This study demonstrated that the blood flow in the median nerve is reduced when Phalen's test is performed in vivo. © 2010 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 28:1022–1025, 2010 相似文献
994.
Mostafa M. Baraka Hany M. Hefny Mahmoud A. Mahran Tamer A. Fayyad Haytham Abdelazim Amr Nabil 《Journal of children's orthopaedics》2021,15(1):12
PurposeSurgical treatment in advanced-stage infantile Blount’s disease with medial plateau (MP) depression is challenging. Several osteotomies and fixation methods have been described with no established benchmark. We conducted this study to evaluate the efficacy and safety of a new single-stage technique for acute medial condyle elevation and metaphyseal osteotomies with internal fixation.MethodsA prospective case series of 19 consecutive patients (21 knees) with severe infantile Blount’s disease underwent a single-stage MP elevation and metaphyseal osteotomies, with internal fixation. The mean age was 10.3 years (8.2 to 13.6) and the mean follow-up was 5.1 years (3.2 to 8.3). The outcome measures included clinical and radiological parameters and patient-reported pediatric outcomes data collection instrument (PODCI) score.ResultsThe mean PODCI score improved significantly from 50% to 88%. The mean internal tibial torsion improved from -27° to 11°. All cases maintained full knee extension, no limitation in flexion range of movement and no signs of instability or lateral thrust gait. All the radiographic parameters improved significantly; the mean tibiofemoral angle improved from -29° to 7°, the metaphyseal-diaphyseal angle improved from 33.4° to 4.7° and the angle of depressed MP improved from 38.3° to 2.4° (p < 0.001). At the latest follow-up, no cases of deformity recurrence were identified, the final limb-length discrepancy was < 1 cm in all patients.ConclusionSingle-stage MP elevation and metaphyseal osteotomies with internal fixation significantly improved the clinical and radiographic parameters and PODCI score in advanced infantile Blount’s disease and precluded the use of external immobilization, with no evidence of deformity recurrence.Level of evidenceIV 相似文献
995.
Ester Illiano Francesco Trama Vito Mancini Antonio Ruffo Giuseppe Romeo Filippo Riccardo Consuelo Fabi Giuseppe Carrieri Felice Crocetto Fabrizio Iacono Elisabetta Costantini 《Translational andrology and urology》2021,10(2):555
BackgroundPeyonie’s disease (PD) mostly affects males in the fifth decade of life, with a prevalence in the general population ranging between 0.5% and 20.3%. The pathology of PD is characterized by fibrosis of the tunic albuginea of the cavernous bodies of the penis, with the presence of pain in the erection and penile deformity. This is associated with decreased sexual function for both participants. The objective of the study was to investigate the influence of PD pathology on both male patients’ and their female partners’ sexual spheres, and analyze changes in sexual function and perception following penile correction surgery.MethodsProspective study, we included male patients with PD and their female partner sexually active. Patients underwent corporoplasty with multiple plications. The male and female sexuality was evaluated before surgery and three months after male treatment by the Female sexual Function Index (FSFI); International Index of Erectile Function (IIEF); Visual Analogical Scale (VAS).ResultsFrom January 2018 to November 2019 we included 35 couple. The female subjects before partner’s surgery presented dyspareunia, loss of sexual desire, inability to achieve orgasm, and sexual dissatisfaction. At three months after surgical treatment there was an improvement of sexual function in both male patients and female partners (desire P<0.0001, arousal P<0.0001, lubrification P<0.0001, orgasm P<0.0001, satisfaction P<0.0001, pain P<0.0001). As regarding male patients the pain decreased significantly (VAS score from 6 to 2.5), while there was no statistically significant improvement in erectile function (P=0.05).ConclusionsOur findings suggest that a viable approach to treatment of PD patients that involves their partners could lead to better functional and psychological results. 相似文献
996.
Binu Prathap Thomas Sreekanth Raveendran Thenmozhi Mani 《Indian Journal of Orthopaedics》2021,55(2):478
BackgroundTardy ulnar nerve palsy is the development of late onset ulnar nerve dysfunction and is usually treated by open anterior transposition of ulnar nerve. Open technique is done using a longitudinal incision about 6–8 inch. in length with chances of development of medial antebrachial cutaneous nerve neuromas.PurposeIn this study, we describe the technique of Endoscopic Anterior Transposition of Ulnar Nerve (EATUN procedure) to treat tardy ulnar nerve palsy and analyze the results.MethodsSeven patients diagnosed to have tardy ulnar nerve palsy was treated by EATUN. The humerus-elbow-wrist angle (HEW), pre- and post-operative intrinsic muscle power and sensory assessment, Dellon scores, and the Q-DASH was analyzed.ResultsThe minimum follow-up was 12 months (Mean 27.4 months, Range 12–36 months). Improvement in Dellon and Q-DASH scores following EATUN procedure was statistically significant. There was objective improvement of intrinsic muscle power and sensation on follow-up, though not statistically significant. No instance of neuroma of the medial cutaneous nerve of forearm was noted.ConclusionsThe endoscopic anterior transposition of the ulnar nerve is a good option in surgical management of tardy ulnar nerve palsy.Level of evidenceTherapeutic Level IV.Supplementary InformationThe online version contains supplementary material available at 10.1007/s43465-021-00366-w. 相似文献
997.
Hashimoto T Toya Y Kihara M Yabana M Inayama Y Tanaka K Iwatsubo K Yanagi M Oshikawa J Kokuho T Kuji T Yoshida S Tamura K Umemura S 《Clinical and experimental nephrology》2008,12(3):224-227
A 65-year-old woman with a 48-year history of Behçet’s disease associated with nephrotic syndrome is described. Immunofluorescence study revealed IgA nephropathy. Following treatment with an angiotensin II type-I receptor-blocker, an anti-platelet drug, and an HMG-CoA reductase inhibitor, accompanied by dietary restrictions of protein and sodium, proteinuria was markedly decreased. This report describes our experience with a rare entity of Behçet’s disease complicated by nephrotic syndrome due to IgA nephropathy. Routine urine examination and renal biopsy are needed for the detection and diagnosis of renal problems with Behçet’s disease. 相似文献
998.
目的探讨两孔法腹腔镜辅助下小儿美克尔憩室切除术的可行性。方法2002年7月~2006年3月采用两孔法腹腔镜技术对13例小儿美克尔憩室行切除术。于脐环下缘及右下腹分别置入5mm trocar,探查找到憩室后,延长脐部切口,将憩室提出腹腔外行切除吻合。结果13例均顺利完成腹腔镜辅助手术,无中转开腹手术,手术时间40~70min,平均50min。术后24h肠功能恢复,术后3d进食流质,5~7d出院。13例随访6~48个月,平均13个月,无复发,无肠粘连、肠梗阻等远期并发症发生。结论两孔法腹腔镜辅助下小儿美克尔憩室切除术具有创伤小,术后病情恢复快,住院时间短,切口美观等诸多优点,安全可行。 相似文献
999.
目的探讨腹腔镜辅助下改良Swenson治疗婴幼儿巨结肠的可行性和有效性。方法应用腹腔镜辅助下改良Swenson法治疗婴幼儿先天性巨结肠13例,采用三孔或四孔腹腔镜法,设定CO2压力为8~10mmHg,取结肠浆肌层组织做病理诊断,Ligasure离断直肠及乙状结肠系膜,远端分离至齿状线上0.5~1.0cm,将病变狭窄段、移行段扩张肠管经直肠肛门内翻拖出切除,结肠直肠全层前高后低心形斜吻合,3例采用强生直径21mm吻合器。结果13例均在腹腔镜下顺利完成手术,手术时间85~161min,平均115min。出血量<12ml。均无术中并发症。术后3例小肠结肠炎,1例污粪,1例吻合口漏,经治疗后治愈。13例随访6~42个月,平均26个月,排便正常,无并发症发生。结论腹腔镜辅助下改良Swenson治疗婴幼儿巨结肠可行、有效。 相似文献
1000.