全文获取类型
收费全文 | 17053篇 |
免费 | 1501篇 |
国内免费 | 414篇 |
专业分类
耳鼻咽喉 | 303篇 |
儿科学 | 252篇 |
妇产科学 | 330篇 |
基础医学 | 378篇 |
口腔科学 | 417篇 |
临床医学 | 2639篇 |
内科学 | 1686篇 |
皮肤病学 | 67篇 |
神经病学 | 367篇 |
特种医学 | 499篇 |
外国民族医学 | 6篇 |
外科学 | 5600篇 |
综合类 | 2961篇 |
现状与发展 | 3篇 |
预防医学 | 557篇 |
眼科学 | 634篇 |
药学 | 794篇 |
33篇 | |
中国医学 | 502篇 |
肿瘤学 | 940篇 |
出版年
2024年 | 19篇 |
2023年 | 356篇 |
2022年 | 410篇 |
2021年 | 826篇 |
2020年 | 846篇 |
2019年 | 725篇 |
2018年 | 727篇 |
2017年 | 733篇 |
2016年 | 729篇 |
2015年 | 666篇 |
2014年 | 1127篇 |
2013年 | 1055篇 |
2012年 | 824篇 |
2011年 | 969篇 |
2010年 | 750篇 |
2009年 | 769篇 |
2008年 | 768篇 |
2007年 | 788篇 |
2006年 | 845篇 |
2005年 | 765篇 |
2004年 | 582篇 |
2003年 | 494篇 |
2002年 | 434篇 |
2001年 | 368篇 |
2000年 | 294篇 |
1999年 | 274篇 |
1998年 | 212篇 |
1997年 | 201篇 |
1996年 | 176篇 |
1995年 | 158篇 |
1994年 | 156篇 |
1993年 | 124篇 |
1992年 | 89篇 |
1991年 | 91篇 |
1990年 | 82篇 |
1989年 | 65篇 |
1988年 | 55篇 |
1987年 | 59篇 |
1986年 | 50篇 |
1985年 | 52篇 |
1984年 | 52篇 |
1983年 | 39篇 |
1982年 | 50篇 |
1981年 | 26篇 |
1980年 | 21篇 |
1979年 | 20篇 |
1978年 | 18篇 |
1977年 | 17篇 |
1976年 | 5篇 |
1975年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
Arthur L. Malkani Kevin J. Himschoot Kevin L. Ong Edmund C. Lau Doruk Baykal John R. Dimar Steven D. Glassman Daniel J. Berry 《The Journal of arthroplasty》2019,34(5):907-911
Background
Patients undergoing primary total hip arthroplasty (THA) following lumbar spine fusion have an increased incidence of dislocation compared to those without prior lumbar fusion. The purpose of this study is to determine if timing of THA prior to or after lumbar fusion would have an effect on dislocation and revision incidence in patients with both hip and lumbar spine pathology.Methods
One hundred percent Medicare inpatient claims data from 2005 to 2015 were used to compare dislocation and revision risks in patients with primary THA with pre-existing lumbar spine fusion vs THA with subsequent lumbar spine fusion within 1, 2, and 5 years after the index THA. A total of 42,300 patients met inclusion criteria, 28,668 patients of which underwent THA with pre-existing lumbar spinal fusion (LSF) and 13,632 patients who had prior THA and subsequent LSF. Patients who had THA first followed by LSF were further stratified based on the interval between index THA and subsequent LSF (1, 2, and 5 years), making 4 total groups for comparison. Multivariate cox regression analysis was performed adjusting for age, socioeconomic status, race, census region, gender, Charlson score, pre-existing conditions, discharge status, length of stay, and hospital characteristics.Results
Patients with prior LSF undergoing THA had a 106% increased risk of dislocation compared to those with LSF done 5 years after THA (P < .001). Risk of revision THA was greater in the pre-existing LSF group by 43%, 41%, and 49% at 1, 2, and 5 years post THA compared to the groups with THA done first with subsequent LSF. Dislocation was the most common etiology for revision THA in all groups, but significantly higher in the prior LSF group (26.6%).Conclusion
Results of this study demonstrate that sequence of surgical intervention for concomitant lumbar and hip pathology requiring LSF and THA respectively significantly impacts the fate of the THA performed. Patients with prior LSF undergoing THA are at significantly higher risk of dislocation and subsequent revision compared to those with THA first followed by delayed LSF.Level of Evidence
3. 相似文献34.
王智慧 《中国中医药现代远程教育》2020,(6):120-122
目的观察使用复方丁香开胃贴对胃癌术后患者减轻腹胀的临床效果及护理。方法将101例胃癌术后且均为胃大部分切除术的患者,将其随机分为对照组50例,治疗组51例,2组患者均被告知和协助术后第一天离床活动,治疗组的患者使用复方丁香开胃贴外贴于患者的脐部即神阙穴,密切观察患者的腹胀情况,比较2组患者术后腹胀的程度及肛门排气情况和住院时间。结果治疗组病例术后腹胀程度、肛门排气情况与对照组相比,差异均有统计学意义(P<0.05)。结论胃癌术后的患者使用复方丁香开胃贴可以有效的减轻腹胀,缩短肛门排气时间,减少住院时间,使患者早日康复出院。 相似文献
35.
消化道术后胃肠功能紊乱影响着患者们的生活质量。张立平教授认为术后胃肠功能紊乱,证属本虚标实,临床治疗当从调理中焦-脾胃肝为切入点,强调"脾胃为本""中焦一体"的治疗思路,总结出脾胃虚弱、肝郁脾虚两个证型,临证时以培土达木为基本治疗原则,辨证论治,临床疗效显著。 相似文献
36.
目的:研究对2型糖尿病患者实施延续护理的效果。方法:选取2018年1月~2018年12月在某院治疗后出院的2型糖尿病患者120例展开研究,按护理施差异分为两组,对照组常规护理,观察组在常规护理基础上实施延续护理,对比分析护理效果、护理后并发症发生率以及生活质量改善情况。结果:经护理后观察组血糖各指标均明显低于对照组(P<0.05);观察组发生率21.6%,对照组发生率41.6%(P<0.05);护理后观察组生活质量各项评分均明显高于对照组(P<0.05)。结论:对2型糖尿病患者实施延续护理效果显著,值得推广。 相似文献
37.
目的分析多学科会诊(MDT)模式对结肠癌患者术后胃肠功能恢复及并发症的效果评价。方法将2017年1月至12月收治的50例结肠癌患者作为对照组,给予常规干预措施;将2018年1月至12月收治的50例结肠癌患者为观察组,采取MDT模式干预。比较两组患者的胃肠功能恢复情况及一般围手术期指标;干预前和干预后2周,采用世界卫生组织生存质量评估量表(WHOQOL-BREF)评估两组患者的生活质量;术后3天,采用视觉模拟评分法(VAS)评估两组患者腹胀发生情况;比较两组患者术后并发症发生情况。结果观察组患者肛门排气时间、首次排便时间、肠鸣音恢复时间、禁食时间、伤口愈合时间、住院时间、术后下床时间均短于对照组患者,差异均有统计学意义(P﹤0.05)。干预后2周,两组患者环境领域、社会领域、心理领域、生理领域及总体健康评分均高于本组干预前,且观察组患者环境领域、社会领域、心理领域、生理领域及总体健康评分均明显高于对照组患者,差异均有统计学意义(P﹤0.05)。术后3天,观察组患者的腹胀程度低于对照组患者,差异有统计学意义(P﹤0.05)。观察组患者术后并发症总发生率为6.0%,低于对照组患者的20.0%,差异有统计学意义(P﹤0.05)。结论MDT模式干预可促进患者术后胃肠功能恢复情况,缩短伤口愈合时间及住院时间,降低术后并发症发生率,并改善了患者的生活质量。 相似文献
38.
39.
《The Journal of arthroplasty》2022,37(4):652-658
BackgroundThis report seeks to clarify whether the dosage and duration of preoperative concurrent corticosteroid use influence postoperative complications after primary total joint arthroplasty (TJA).MethodsThis retrospective single institutional study enrolled 1128 primary TJA cases, including 905 total hip arthroplasties and 223 total knee arthroplasties at a minimum 6 months of follow-up. Mean follow-up period was 51.9 ± 34.1 months (range 6-146). Of all joints, 120 joints (10.6%) were associated with chronic concurrent oral corticosteroid use. Multivariate analysis was performed to identify whether chronic concurrent oral corticosteroid use elevated the risk of postoperative complications including surgical site infection/periprosthetic joint infection, delayed wound healing, periprosthetic fracture, and implant loosening. For chronic concurrent oral corticosteroid user, we determined whether the dosage and duration of preoperative concurrent corticosteroid use influenced postoperative complications and have an effective threshold for postoperative complications using receiver operating characteristic curve analysis.ResultsThe multivariate analysis revealed that American Society of Anesthesiologist Physical Status 3 was an independent risk factor for postoperative complications, while concurrent oral corticosteroid use was not an independent risk factor. When we compared joints with (n = 13) and without (n = 107) postoperative complications in chronic concurrent oral corticosteroid user, there was no statistical difference in the dosage (P = .97) and duration (P = .69) between the 2 groups. Area under the curve values for the oral corticosteroid dosages and duration were 0.482 and 0.549, respectively.ConclusionThis study revealed that neither dosage nor duration of concurrent oral corticosteroid use was predictive of postoperative complications after TJA. American Society of Anesthesiologist Physical Status 3 is a major factor in postoperative complications after TJA. 相似文献
40.
人工智能在医疗领域的应用逐步推动医疗变革,机器学习算法融入麻醉领域对于进一步提升麻醉发展意义重大。为了解机器学习算法在麻醉领域的应用现况及推动相关研究进展,本文总结了机器学习在围手术期麻醉管理和预测术后并发症方面的应用、基本概念和研究现状,指出了目前机器学习算法在医疗领域的不足之处。 相似文献