首页 | 本学科首页   官方微博 | 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   88050篇
  免费   6707篇
  国内免费   2007篇
耳鼻咽喉   3173篇
儿科学   1047篇
妇产科学   1810篇
基础医学   2792篇
口腔科学   3239篇
临床医学   9056篇
内科学   8516篇
皮肤病学   775篇
神经病学   3856篇
特种医学   2495篇
外国民族医学   21篇
外科学   27840篇
综合类   11973篇
现状与发展   6篇
一般理论   2篇
预防医学   3506篇
眼科学   4837篇
药学   4168篇
  190篇
中国医学   1631篇
肿瘤学   5831篇
  2024年   202篇
  2023年   2247篇
  2022年   2906篇
  2021年   4888篇
  2020年   4825篇
  2019年   4122篇
  2018年   3971篇
  2017年   3564篇
  2016年   3491篇
  2015年   3472篇
  2014年   6782篇
  2013年   6563篇
  2012年   5140篇
  2011年   5393篇
  2010年   4294篇
  2009年   3962篇
  2008年   3835篇
  2007年   3803篇
  2006年   3301篇
  2005年   2905篇
  2004年   2472篇
  2003年   2042篇
  2002年   1577篇
  2001年   1521篇
  2000年   1275篇
  1999年   1171篇
  1998年   955篇
  1997年   901篇
  1996年   674篇
  1995年   579篇
  1994年   500篇
  1993年   403篇
  1992年   352篇
  1991年   337篇
  1990年   252篇
  1989年   240篇
  1988年   245篇
  1987年   238篇
  1986年   192篇
  1985年   213篇
  1984年   195篇
  1983年   140篇
  1982年   146篇
  1981年   128篇
  1980年   94篇
  1979年   59篇
  1978年   51篇
  1977年   44篇
  1976年   38篇
  1975年   29篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
胃癌在全国范围内是发病率最高的恶性肿瘤之一,在癌症相关死亡原因中排名第三。目前外科手术仍然是胃癌获得根治性治疗的主要手段,但是其中有30%~40%的进展期胃癌患者在初诊时就失去了根治手术的机会,因此不可切除胃癌转化为可切除胃癌是患者获得"治愈"的最佳选择。随着近些年来新型药物的出现、治疗手段的多样化及多学科诊治模式的发展,"转化治疗"的理念应运而生,从而延长患者生存时间并提高其生活质量。本文就不可切除胃癌的治疗现状与进展、"转化治疗"的应用等进行综述。  相似文献   
92.
The Impella 5.0, a percutaneously inserted left ventricular assist device, has been used to support patients who have severe heart failure or who are undergoing high-risk percutaneous coronary intervention. We report our surgical placement of the Impella 5.0, through a graft sewn to the aorta, to unload the left ventricle of a 59-year-old man who was undergoing venoarterial extracorporeal membrane oxygenation for postcardiotomy shock. The patient underwent successful placement of a long-term left ventricular assist device before his discharge from the hospital. The versatility of the Impella 5.0 is exemplified in this patient who was successfully bridged to long-term support.  相似文献   
93.
静脉血栓栓塞症(VTE)是指各种病因(如静脉血滞缓、静脉壁血管内膜损伤或血液高凝等)导致血液在静脉系统不正常凝集的一组疾病,包括肺动脉栓塞(PE)和深静脉血栓形成(DVT)。上海市普通外科临床质量控制中心自2018年发布《上海市普通外科住院病人静脉血栓栓塞症防治管理规范》(以下简称2018版《规范》)至今已2年,推动了上海市普通外科围手术期血栓防治工作的推广,同时积累了上海在血栓防治方面的临床数据。截止至2019年9月,上海市二级以上医院已有88%建立VTE防控体系,在病史中包含了VTE风险评估表,并且大部分医院已有电子病案的嵌入或纸质病史的记录;84%的医院有VTE和PE的联合会诊团队;92%医院的普通外科已按照2018版《规范》为住院病人评估VTE风险,74%的科室在病人手术后再次评估VTE风险,38%的科室在出院前会再次为病人评估VTE风险。上海市普通外科在临床实践中防治VTE的理念和实践有了很大进步,但与先进国家和医院的防治实践相比仍有较大差距。  相似文献   
94.
Gray platelet syndrome (GPS) is a rare (<1/1 000 000) and inherited platelet function disorder characterized by macrothrombocytopenia, α-granule deficiency, and hemorrhages. Bleeding intensity does not correlate with platelet count nor with functional test results. We hereby describe the perioperative bleeding prevention and management of a patient with GPS requiring multiple redo cardiac surgeries.  相似文献   
95.
96.
目的:探讨中西医结合精准护理在日间腹腔镜胆囊切除术(laparoscopic cholecystectomy,LC)中的应用价值。方法:对2018年5月—2018年11月115例行日间LC术患者实施精准护理(观察组),并与同期住院行常规LC术患者92例(对照组)进行对比,观察组在常规护理的基础上,实施耳穴压豆联合穴位贴敷及精准护理方法,分析对比两组患者住院时间、护理满意度评分、术后疼痛评分、术后不良反应发生率等。结果:观察组住院时间、术后疼痛评分及术后不良反应发生率均明显低于对照组(P0.05),护理满意度评分明显高于对照组(P0.05)。结论:中西医结合精准护理可明显提高行日间LC术患者的护理质量,促进患者快速康复。  相似文献   
97.
A Bochdalek hernia (BH) is a congenital abnormality with incomplete closure of the diaphragm. It is usually manifested in infants but rarely in adults. Here, we report an adult patient with gastric volvulus and giant BH that were safely repaired by endoscopic reduction and elective laparoscopic surgery, respectively. A 79-year-old woman presented with left upper abdominal pain but no history of trauma. CT revealed a giant BH with gastric volvulus. After emergency endoscopic reduction of the volvulus, elective laparoscopic repair of the BH was performed. The 8 × 8-cm defect was repaired with interrupted nonabsorbable sutures and a mesh. The patient's postoperative course was uneventful, and no complications or recurrence were observed in the 6 months that followed.  相似文献   
98.
The inferior alveolar nerve and facial nerve are the two most important nerves in the dental and maxillofacial region. The injury to them is one of the major postoperative complications after alveolar surgery and orthognathic surgery. However, recovering the nerve function after injury takes a long time and the recovery effect tends to be unsatisfactory. In recent years, an intensively investigated technique, low level laser which has been applying in assisting the recovery of nerve function, has been gradually proved to be effective in clinically treating postoperative nerve injury. In this article we review in terms of the mechanisms involved in low level laser-assisted functional restoration of nerve injury and its clinical application in the recovery of nerve function in the dental and maxillofacial area as well.  相似文献   
99.
100.

Background

A history of childhood maltreatment and psychopathology are common in adults with obesity.

Objectives

To report childhood maltreatment and to evaluate associations between severity and type of childhood maltreatment and lifetime history of psychopathology among adults with severe obesity awaiting bariatric surgery.

Setting

Four clinical centers of the Longitudinal Assessment of Bariatric Surgery Research Consortium.

Methods

The Childhood Trauma Questionnaire, which assesses presence/severity (i.e., none, mild, moderate, severe) of physical abuse, mental abuse, physical neglect, mental neglect, and sexual abuse, was completed by 302 female and 66 male bariatric surgery patients. Presurgery lifetime history of psychopathology and suicidal ideation/behavior were assessed with the Structured Clinical Interview for DSM-IV and the Suicidal Behavioral Questionnaire-Revised, respectively. Presurgery lifetime history of antidepressant use was self-reported.

Results

Two thirds (66.6%) of females and 47.0% of males reported at least 1 form of childhood trauma; 42.4% and 24.2%, respectively, at greater than or equal to moderate severity. Among women, presence/greater severity of childhood mental or physical abuse or neglect was associated with a higher risk of history of psychopathology (i.e., major depressive disorder, posttraumatic stress disorder, other anxiety disorder, alcohol use disorder, binge eating disorder), suicidal ideation/behavior and antidepressant use (P for all ≤ .02). These associations were independent of age, race, education, body mass index, and childhood sexual abuse. Childhood sexual abuse was independently associated with a history of suicidal ideation/behavior and antidepressant use only (P for both ≤ .05). Statistical power was limited to evaluate these associations among men.

Conclusion

Among women with obesity, presence/severity of childhood trauma was positively associated with relatively common psychiatric disorders.  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