全文获取类型
收费全文 | 462466篇 |
免费 | 33414篇 |
国内免费 | 9824篇 |
专业分类
耳鼻咽喉 | 5806篇 |
儿科学 | 8987篇 |
妇产科学 | 11004篇 |
基础医学 | 63105篇 |
口腔科学 | 13254篇 |
临床医学 | 42506篇 |
内科学 | 90139篇 |
皮肤病学 | 9176篇 |
神经病学 | 32181篇 |
特种医学 | 16947篇 |
外国民族医学 | 138篇 |
外科学 | 68289篇 |
综合类 | 24841篇 |
现状与发展 | 23篇 |
一般理论 | 77篇 |
预防医学 | 22825篇 |
眼科学 | 12310篇 |
药学 | 39789篇 |
100篇 | |
中国医学 | 7943篇 |
肿瘤学 | 36264篇 |
出版年
2022年 | 3863篇 |
2021年 | 7683篇 |
2020年 | 5471篇 |
2019年 | 5848篇 |
2018年 | 7819篇 |
2017年 | 6210篇 |
2016年 | 6234篇 |
2015年 | 8195篇 |
2014年 | 10813篇 |
2013年 | 11692篇 |
2012年 | 16378篇 |
2011年 | 17594篇 |
2010年 | 10637篇 |
2009年 | 9327篇 |
2008年 | 13854篇 |
2007年 | 14555篇 |
2006年 | 14693篇 |
2005年 | 13811篇 |
2004年 | 11436篇 |
2003年 | 11122篇 |
2002年 | 10347篇 |
2001年 | 29965篇 |
2000年 | 30616篇 |
1999年 | 25634篇 |
1998年 | 6503篇 |
1997年 | 5549篇 |
1996年 | 4904篇 |
1995年 | 4485篇 |
1994年 | 3935篇 |
1993年 | 3352篇 |
1992年 | 16580篇 |
1991年 | 15251篇 |
1990年 | 14561篇 |
1989年 | 14308篇 |
1988年 | 12866篇 |
1987年 | 12276篇 |
1986年 | 11262篇 |
1985年 | 10460篇 |
1984年 | 6971篇 |
1983年 | 5630篇 |
1982年 | 2747篇 |
1979年 | 5493篇 |
1978年 | 3347篇 |
1977年 | 2971篇 |
1975年 | 2636篇 |
1974年 | 3064篇 |
1973年 | 2863篇 |
1972年 | 2828篇 |
1971年 | 2773篇 |
1969年 | 2543篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
52.
53.
目的分析早发型子痫前期应用低分子肝素期待治疗的临床效果。方法回顾分析2017-01—2018-12间在郑州大学第一附属医院产科终止妊娠的95例早发型子痫前期患者的临床资料。按终止妊娠前是否应用低分子肝素分为2组。对照组(47例)给予降压、解痉等治疗;观察组(48例)在对照组基础上加用低分子肝素。结果2组分娩孕周、妊娠延长时间、妊娠并发症发生率、新生儿出生体质量、新生儿窒息及胎儿宫内窘迫发生率、新生儿Apgar评分等,差异均无统计学意义(P>0.05)。结论对早发型子痫前期患者在常规治疗基础上短期应用低分子肝素,不能延长妊娠时间,不改善母婴结局。 相似文献
54.
随着腔镜技术的进一步发展以及微创理念应用于结直肠外科疾病的诊治中,结直肠相关疾病的诊治发生了翻天覆地的变化。由传统的经腹手术到腹腔镜手术、经自然腔道手术,再到经自然腔道取标本手术(NOSES),结直肠疾病的外科诊治在微创领域取得了巨大成果。NOSES技术是目前结直肠外科在微创领域前沿的手术方式之一,它通过经直肠、阴道取标本来避免了腹壁的辅助取标本切口,从而将结直肠外科手术进一步微创化。NOSES技术集传统腹腔镜手术的优势与现代微创外科的理念于一体,它在确保手术效果的基础上集中体现了微创、加速康复外科、功能外科、"无疤"等理念的特点。本文主要就国内外各中心开展NOSES技术在结直肠外科诊治开展中的相关经验、心得和体会进行综述。 相似文献
55.
56.
舌癌患者手术及放化疗后会出现构音障碍、吞咽困难、口腔黏膜炎、口干、营养不良等并发症,使患者生存质量下降,甚至导致肿瘤的复发转移,影响生存期,单一方法往往顾此失彼。依托于中国中医科学院西苑医院肿瘤康复基地,杨宇飞教授在国内外调研考察基础上,结合中国国情,构建了一种“门诊多学科肿瘤康复模式”,在舌癌康复方面,以患者为中心,以中医肿瘤内科为主导,多学科共同参与,结合康复科、口腔科、营养科、药剂科等各科优势,形成全程个体化规范序贯康复方案,对患者及早进行康复,在放疗前进行预防性干预尤其重要,使患者能够快速缓解手术和放疗的不良反应,患者获益明显。现取两个典型案例总结其舌癌多学科康复的经验,以期为舌癌的康复提供借鉴。 相似文献
57.
58.
Mariano E. Menendez Suleiman Y. Sudah Patrick J. Denard 《Seminars in Arthroplasty》2022,32(3):644-649
BackgroundThe growing enthusiasm for the use of reverse shoulder arthroplasty (RSA) in the treatment of primary glenohumeral osteoarthritis (GHOA) with an intact rotator cuff is based on data derived from single-center studies with limited generalizability and follow-up. This study compared patient-reported outcomes (PROs) between RSA and total shoulder arthroplasty (TSA) for the treatment of primary GHOA with up to 5-year follow-up and examined temporal trends in the treatment of GHOA between 2012 and 2021.MethodsA retrospective review was performed on patients with primary GHOA undergoing primary arthroplasty surgery from the Surgical Outcomes System global registry between 2012 and 2021. PROs including the American Shoulder and Elbow Surgeons (ASES) score, Single Assessment Numeric Evaluation (SANE) score, and visual analog scale (VAS) for pain were compared between RSA and TSA at 1, 2, and 5 years postoperatively.ResultsA total of 4451 patients were included, with 2693 (60.5%) undergoing TSA and 1758 (39.5%) undergoing RSA. Both RSA and TSA provided clinically excellent outcomes at 1 year postoperatively (ASES: 80.8 ± 17.9 vs. 85.9 ± 15.2, respectively; SANE: 74.8 ± 24.7 vs. 79.5 ± 22.9; VAS pain: 1.3 ± 2.0 vs. 1.1 ± 1.7; all P < .05) that were maintained at 2 years (ASES: 81.3 ± 19.3 vs. 87.3 ± 14.9; SANE: 74.8 ± 26.2 vs. 79.7 ± 24.7; VAS pain: 1.3 ± 2.1 vs. 1.0 ± 1.6; all P < .05) and 5 years (ASES: 81.7 ± 16.5 vs. 86.9 ± 15.3; SANE: 71.6 ± 28.5 vs. 78.2 ± 25.9; VAS pain: 1.0 ± 1.7 vs. 1.0 ± 1.7; all P < .05), with statistical significance favoring TSA. After controlling for age and sex, there was an adjusted difference of 4.5 units in the ASES score favoring TSA (P = .005) at 5 years postoperatively but no differences in adjusted SANE (P = .745) and VAS pain (P = .332) scores. The use of RSA for GHOA grew considerably over time, from representing only 17% of all replacements performed for GHOA in 2012 to nearly half (47%) in 2021 (P < .001).ConclusionRSA as a treatment for GHOA with an intact rotator cuff seems to yield PROs that are largely clinically equivalent to TSA extending to 5 years postoperatively. The observed statistical significance favoring TSA appears to be of marginal clinical benefit based on established minimal clinically important differences and may be a result of the large sample size. Further research using more granular clinical data and examining differences in range of motion and complications is warranted as it may change the value analysis. 相似文献
59.
T.-Y. Huang Y.-J. Hsia M.-Y. Sung Y.-T. Wu P.-C. Hsu 《International journal of oral and maxillofacial surgery》2021,50(8):1100-1106
Zygomatic implant treatment is widely applied for severe maxillary atrophy to help rehabilitate the maxillary dentition. This retrospective study was performed to evaluate the actual radiographic bone–implant contact (rBIC) lengths of zygomatic implants. The records of 28 patients who underwent zygomatic implant surgery and subsequent follow-up examinations between August 2013 and September 2018 in the Department of Oral and Maxillofacial Surgery, Taipei Tzu Chi Hospital were reviewed. The surgeries were performed by a single surgeon using the same treatment protocol. All patients had a computed tomography scan at 1 year after the surgery. Using three-dimensional imaging software, an investigator measured the rBIC lengths of 66 implants and documented their clinical status. The implant survival rate was 100%. The mean rBIC length was significantly longer in male patients than in female patients (20.80 ± 5.88 mm versus 17.79 ± 6.34 mm; P = 0.028). The mean rBIC length of double zygomatic implants was significantly longer when compared to that of single implants (21.11 ± 6.23 mm versus 17.75 ± 5.85 mm; P = 0.027). This article is novel in reporting the exact rBIC lengths of zygomatic implants in a clinical setting. The results showed that zygomatic implants are a viable treatment modality for full-mouth rehabilitation. 相似文献
60.