全文获取类型
收费全文 | 298984篇 |
免费 | 11722篇 |
国内免费 | 8217篇 |
专业分类
耳鼻咽喉 | 2143篇 |
儿科学 | 8130篇 |
妇产科学 | 5302篇 |
基础医学 | 30916篇 |
口腔科学 | 3597篇 |
临床医学 | 28708篇 |
内科学 | 50976篇 |
皮肤病学 | 2102篇 |
神经病学 | 23041篇 |
特种医学 | 13137篇 |
外国民族医学 | 70篇 |
外科学 | 41565篇 |
综合类 | 21261篇 |
现状与发展 | 24篇 |
一般理论 | 5篇 |
预防医学 | 25700篇 |
眼科学 | 6354篇 |
药学 | 22113篇 |
122篇 | |
中国医学 | 6671篇 |
肿瘤学 | 26986篇 |
出版年
2024年 | 358篇 |
2023年 | 1864篇 |
2022年 | 4753篇 |
2021年 | 5983篇 |
2020年 | 4321篇 |
2019年 | 4108篇 |
2018年 | 25659篇 |
2017年 | 20779篇 |
2016年 | 22674篇 |
2015年 | 6134篇 |
2014年 | 7357篇 |
2013年 | 6856篇 |
2012年 | 15742篇 |
2011年 | 30404篇 |
2010年 | 24470篇 |
2009年 | 16123篇 |
2008年 | 25732篇 |
2007年 | 27963篇 |
2006年 | 7024篇 |
2005年 | 8590篇 |
2004年 | 7720篇 |
2003年 | 8457篇 |
2002年 | 5979篇 |
2001年 | 3486篇 |
2000年 | 3716篇 |
1999年 | 3618篇 |
1998年 | 2444篇 |
1997年 | 2372篇 |
1996年 | 1654篇 |
1995年 | 1557篇 |
1994年 | 1358篇 |
1993年 | 880篇 |
1992年 | 1262篇 |
1991年 | 1158篇 |
1990年 | 1051篇 |
1989年 | 896篇 |
1988年 | 762篇 |
1987年 | 706篇 |
1986年 | 529篇 |
1985年 | 491篇 |
1984年 | 267篇 |
1983年 | 198篇 |
1982年 | 142篇 |
1981年 | 116篇 |
1980年 | 115篇 |
1979年 | 122篇 |
1978年 | 67篇 |
1975年 | 60篇 |
1974年 | 84篇 |
1938年 | 61篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
63.
BACKGROUND AND PURPOSE: Thyroidectomy is a common treatment for thyroid disorders in Taiwan, and constitutes a significant percentage of medical expenses. This study investigated the characteristics of thyroidectomy in Taiwan. METHODS: A total of 21 senior general surgeons from 16 medical centers and 5 regional hospitals participated. One surgeon from each hospital reviewed the hospital's medical records of thyroid operations performed in the year 2001. Medical records for 3846 thyroidectomies were retrospectively analyzed, including surgical indications and modalities, complications, pathology reports, and the use of antibiotics. RESULTS: Most of the patients were women (85%). Indications for surgery included proven malignancy (9%), suspicious malignancy (30%), evident compression symptoms (20%), hyperthyroidism (20%), and cosmetic reasons (12%). The majority of patients (78%) underwent a surgical procedure with lobectomy or bilateral thyroidectomy; 13% had unilateral partial thyroidectomy. Prophylactic antibiotics were administered in 46% of procedures, and continued postoperatively in 12%. Postoperative complications occurred in 12% of patients. Hypocalcemia was the most common complication (8%), and its incidence was significantly correlated with the frequency of total thyroidectomy (p < 0.01). Complete pathology reports for the thyroidectomized specimens were available in only 65% of the cases. The frequency of cosmetic reasons for surgery, unilateral subtotal resection, routine antibiotic administration, and incomplete pathology reports were significantly higher in regional hospitals than in medical centers. CONCLUSIONS: Reduction in the high rates of cosmetic reasons for surgery, unilateral partial thyroidectomy, incomplete pathology reports, and use of antibiotic prophylaxis are needed to improve the quality of thyroidectomy in Taiwan. 相似文献
64.
Pneumocephalus is a very rare complication of video-assisted thoracoscopic surgery (VATS). A 66-year-old man developed pneumocephalus secondary to thoracoscopic excision of a neurogenic tumor in the posterior mediastinum. Pneumocephalus was diagnosed by brain computed tomography. Neurosurgical intervention was performed after conservative therapy had failed. The patient's condition had resolved without any neurologic sequelae 2 years later. When a patient has a relatively large amount of chest tube drainage and neurologic symptoms after VATS, the possibility of pneumocephalus due to cerebrospinal fluid leakage must be considered. 相似文献
65.
66.
我们现在要尽量使这些治疗方法进入临床试验证明他们的可行性现在脊髓损伤的临床试验基金很有限,所以只有很少的这些治疗方法真正用于病人主要的制药厂开始对脊髓损伤治疗产生兴趣,我们现在还有很多工作要做,但是前景方向十分清楚,我们需要努力快速的工作。 相似文献
67.
68.
69.
Chad G. Ball Andrew W. Kirkpatrick Matthew Smith Robert H. Mulloy Leonard Tse Ian B. Anderson 《European journal of trauma and emergency surgery》2007,33(5):550-552
Abstract We report a case of SMV injury in a critically ill patient. The patient was a 19-year-old woman involved in a motor vehicle
collision. Her injuries included grade II splenic and renal lacerations, devascularized and lacerated right and transverse
colon, a transected transverse mesocolon, a massive shear injury of her abdominal wall, and two partial SMV transections.
At initial damage control laparotomy, the SMV was ligated, the devascularized bowel resected and a temporary abdominal closure
applied. At re-operation, a mesocaval shunt using saphenous vein was employed. The shunt failed and the patient required a
saphenous vein jump graft. Although visceral vascular injuries are rare, ligation of the SMV in a damage control situation
is acceptable. This case study is the first to discuss appropriate treatment when interruption to a patient's collateral visceral
venous drainage limits the surgeon’s ability to ligate. In these situations, bypass shunts may be successful. 相似文献
70.
目的联合应用经腹腹膜前腹腔镜疝修补术(transabdominal preperitoneal prosthetic,TAPP)和腹腔内网片植入术(intraperitoneal onlay mesh,IPOM),探讨理想的腹腔镜下腹股沟疝修补的方法。方法2006年1月~12月,对30例成人腹股沟疝行腹腔镜下修补。以腹壁下血管内侧缘为界,把疝薄弱区纵行分成内侧和外侧,内侧采用改进的TAPP方法,外侧仍用IPOM方法。沿腹壁下血管内侧缘纵行剪开腹膜后向内侧游离的区域内基本上是无血管区,亦无重要的神经,组织疏松极易游离,数分钟内即可分离出所需要的面积(7.5 cm×6.5 cm)。补片的材料亦分为内侧和外侧,内侧是聚丙烯材料,外侧应用Proceed补片。结果30例均在硬膜外麻醉下完成,手术时间单侧30~40 min,平均35 min,双侧50~60 min,平均55min,术中出血1~5 ml,术后第2天可离床活动,术后3~4天出院,术后2周均恢复工作。术后随访2~12个月,平均9个月,无粘连性肠梗阻,腹股沟部和全身无不良反应。结论联合应用TAPP和IPOM后,能体现微创的原则,易掌握,损伤少,手术时间短,恢复快,手术效果确切。 相似文献