全文获取类型
收费全文 | 99412篇 |
免费 | 8096篇 |
国内免费 | 4572篇 |
专业分类
耳鼻咽喉 | 320篇 |
儿科学 | 2608篇 |
妇产科学 | 586篇 |
基础医学 | 7056篇 |
口腔科学 | 712篇 |
临床医学 | 13718篇 |
内科学 | 9822篇 |
皮肤病学 | 444篇 |
神经病学 | 7464篇 |
特种医学 | 5404篇 |
外国民族医学 | 10篇 |
外科学 | 23907篇 |
综合类 | 18156篇 |
现状与发展 | 8篇 |
一般理论 | 1篇 |
预防医学 | 4600篇 |
眼科学 | 933篇 |
药学 | 9275篇 |
54篇 | |
中国医学 | 4585篇 |
肿瘤学 | 2417篇 |
出版年
2024年 | 115篇 |
2023年 | 1522篇 |
2022年 | 2147篇 |
2021年 | 3752篇 |
2020年 | 3792篇 |
2019年 | 3167篇 |
2018年 | 3179篇 |
2017年 | 3493篇 |
2016年 | 3793篇 |
2015年 | 3736篇 |
2014年 | 6563篇 |
2013年 | 8128篇 |
2012年 | 5963篇 |
2011年 | 6466篇 |
2010年 | 5512篇 |
2009年 | 5267篇 |
2008年 | 5248篇 |
2007年 | 5311篇 |
2006年 | 4995篇 |
2005年 | 4425篇 |
2004年 | 3653篇 |
2003年 | 3168篇 |
2002年 | 2697篇 |
2001年 | 2374篇 |
2000年 | 1932篇 |
1999年 | 1554篇 |
1998年 | 1265篇 |
1997年 | 1182篇 |
1996年 | 1031篇 |
1995年 | 991篇 |
1994年 | 823篇 |
1993年 | 671篇 |
1992年 | 573篇 |
1991年 | 462篇 |
1990年 | 407篇 |
1989年 | 381篇 |
1988年 | 291篇 |
1987年 | 279篇 |
1986年 | 218篇 |
1985年 | 303篇 |
1984年 | 231篇 |
1983年 | 139篇 |
1982年 | 142篇 |
1981年 | 152篇 |
1980年 | 124篇 |
1979年 | 90篇 |
1978年 | 90篇 |
1977年 | 62篇 |
1976年 | 73篇 |
1975年 | 45篇 |
排序方式: 共有10000条查询结果,搜索用时 18 毫秒
1.
2.
3.
4.
《The Journal for Nurse Practitioners》2022,18(10):1086-1090
The coronavirus disease 2019 pandemic presented challenges for urology patients to receive care in the format of a traditional clinic visit. For renal cancer patients, active surveillance and postintervention surveillance are the standard components of management. Telehealth, which was defined as a televideo encounter via the BlueJeans (Verizon) platform (a telehealth platform), was used to ensure continuity of care. Telehealth using the televideo modality was shown to be an effective model of care delivery to provide an optimal patient experience with ease of use. 相似文献
5.
《Journal of vascular and interventional radiology : JVIR》2022,33(8):895-902.e4
PurposeTo study, from a U.S. payer’s perspective, the economic consequences of drug-coated balloon (DCB) versus standard percutaneous transluminal angioplasty (PTA) use for the treatment of stenotic lesions in dysfunctional hemodialysis arteriovenous fistulae.Materials and MethodsCost differences between DCBs and PTA at year 1 and beyond were calculated via 2 methods. The first approach used the mean absolute number of trial-observed access circuit reinterventions through 12 months (0.65 ± 1.05 vs 1.05 ± 1.18 events per patient for DCBs and PTA, respectively) and projected treatment outcomes to 3 years. The second approach was based on the trial-observed access circuit primary patency rates at 12 months (53.8% vs 32.4%) and calculated the cost difference on the basis of previously published Medicare cost for patients who maintained or did not maintain primary patency. Assumptions regarding DCB device prices were tested in sensitivity analyses, and the numbers needed to treat were calculated.ResultsUsing the absolute number of access circuit reinterventions approach, the DCB strategy resulted in an estimated per-patient savings of $1,632 at 1 year and $4,263 at 3 years before considering the DCB device cost. The access circuit primary patency approach was associated with a per-patient cost savings of $2,152 at 1 year and $3,894 at 2.5 years of follow-up. At the theoretical DCB device reimbursement of $1,800, savings were $1,680 and $2,049 at 2.5 and 3 years, respectively. The one-year NNT of DCB compared to PTA was 2.48.ConclusionsEndovascular therapy for arteriovenous access stenosis with the IN.PACT AV DCB can be expected to be cost-saving if longer follow-up data confirm its clinical effectiveness. 相似文献
6.
《European journal of surgical oncology》2022,48(11):2346-2351
In the pelvis, anatomic complexity and difficulty in visualization and access make surgery a formidable task. Surgeons are prone to work-related musculoskeletal injuries from the frequently poor design and flow of their work environment. This is exacerbated by the strain of surgery in the pelvis. These injuries can result in alterations to a surgeons practice, inadvertent patient injury, and even early retirement. Human factors examines the relationships between the surgeon, their instruments and their environment. By bridging physiology, psychology, and ergonomics, human factors allows a better understanding of some of the challenges posed by pelvic surgery. The operative approach involved (open, laparoscopic, robotic, or perineal) plays an important role in the relevant human factors. Improved understanding of ergonomics can mitigate these risks to surgeons. Other human factors approaches such as standardization, use of checklists, and employing resiliency efforts can all improve patient safety in the operating theatre. 相似文献
7.
ObjectiveTo investigate the presence of symptoms of moral injury in obstetric and neonatal nurses.DesignA secondary qualitative analysis using an analytic expansion of three primary studies.SettingPostal mail and electronic surveys.ParticipantsI used three primary studies: participants in the first consisted of 78 labor and delivery nurses, participants in the second consisted of 75 nurse-midwives, and participants in the third consisted of 22 NICU nurses.MethodsI used Krippendorff’s content analysis method for qualitative data to reanalyze the three primary data sets. The categories I used in this analysis were the 10 symptoms of moral injury that are assessed by the Moral Injury Symptoms Scale–Health Professionals Version.ResultsWhen combining the three types of obstetric and neonatal participants, the top three most frequently cited symptoms of moral injury were moral concern, guilt, and self-condemnation. For participants in labor and delivery units and NICUs, moral concern was the most often described symptom, whereas for participants in midwifery it was guilt. None of the participants reported loss of meaning in their lives, loss of faith, or religious struggle. Participants who worked in NICUs did not describe any symptoms of shame or difficulty forgiving.ConclusionIn addition to the primary symptoms of moral injury, reported secondary consequences of moral injury can include depression, anxiety, anger, self-harm, and social problems. Interventions such as acceptance and commitment therapy are needed to help nurses address the potential for moral injury and repair its effects. Since the COVID-19 pandemic, now more than ever, moral injury needs to be recognized in obstetric and neonatal nurses and not just in the military population. 相似文献
8.
9.
目的探讨超微经皮肾镜取石术(UMP)应用于直径1.5~2.5 cm肾及输尿管上段结石患者中的安全性和有效性。方法回顾性分析2018年6月-2020年6月宿迁市第一人民医院收治的60例直径为1.5~2.5 cm肾及输尿管上段结石患者的临床资料,均采用UMP治疗,分析患者手术时间、住院时间、手术成功率、结石清除率、并发症发生率及额外镇痛药使用情况。结果60例患者均一期建立通道并顺利完成手术。所有患者均未行单通道手术,未接受输血,无毗邻脏器损伤(肠道、肝脏和脾脏等),无血气胸发生;存在尿外渗或者有明显症状的腹膜后灌注液患者3例(5.0%),均行保守治疗好转;发热(体温高于38℃)5例(8.3%),均对症治疗后好转;无感染性休克患者。手术时间为35~98 min,平均(56.1±21.3)min;术后住院天数为3~8 d,平均(4.1±1.8)d;术后立即评估结石清除率为85.0%(51/60),术后1个月评估结石清除率为91.7%(55/60);术后镇痛药使用率为15.0%(9/60)。结论UMP是治疗直径1.5~2.5 cm肾及输尿管上段结石安全、有效的治疗方法之一,值得临床推广。 相似文献
10.
《Digestive and liver disease》2022,54(11):1486-1493
BackgroundCold snare polypectomy (CSP) is a promising technique for the removal of sessile serrated polyps (SSPs) ≥ 10 mm. However, the efficacy and safety of this technique remain undetermined.AimsWe aimed to comprehensively evaluate the efficacy and safety of CSP for SSPs ≥ 10 mm.MethodsPubMed, EMBASE, Web of Science and Cochrane Library were searched up to January 2021.ResultsA total of 10 studies consisting of 1727 SSPs (range, 10–40 mm) from 1021 patients were included. The overall rates of technical success, adverse events (AEs) and residual SSPs were 100%, 0.7% and 2.9%, respectively. Subgroup analysis showed that the rates of technical success and AEs were comparable between CSP and cold endoscopic mucosal resection (EMR) (99.9% vs. 100% and 1.3% vs. 0.5%, respectively), between the proximal and distal colon (100% vs. 99.9% and 0.3% vs. 0, respectively), and between polyps of 10–19 mm and ≥20 mm (99.8% vs. 100% and 0.9% vs. 0, respectively). However, subgroup analysis showed that the rate of residual SSPs was slightly lower in CSP compared with cold EMR (1.3% vs. 3.9%), as well as in polyps of 10–19 mm compared with those ≥20 mm (3.1% vs. 4.7%).ConclusionCSP was an effective and safe technique for removing SSPs ≥ 10 mm. 相似文献