全文获取类型
收费全文 | 42196篇 |
免费 | 2332篇 |
国内免费 | 146篇 |
专业分类
耳鼻咽喉 | 547篇 |
儿科学 | 2747篇 |
妇产科学 | 739篇 |
基础医学 | 5049篇 |
口腔科学 | 1176篇 |
临床医学 | 3013篇 |
内科学 | 7584篇 |
皮肤病学 | 1160篇 |
神经病学 | 2539篇 |
特种医学 | 1230篇 |
外科学 | 6472篇 |
综合类 | 1399篇 |
一般理论 | 17篇 |
预防医学 | 2153篇 |
眼科学 | 1491篇 |
药学 | 4164篇 |
1篇 | |
中国医学 | 357篇 |
肿瘤学 | 2836篇 |
出版年
2023年 | 355篇 |
2022年 | 1005篇 |
2021年 | 1698篇 |
2020年 | 921篇 |
2019年 | 1037篇 |
2018年 | 1450篇 |
2017年 | 1061篇 |
2016年 | 1395篇 |
2015年 | 1388篇 |
2014年 | 2031篇 |
2013年 | 2337篇 |
2012年 | 3309篇 |
2011年 | 3217篇 |
2010年 | 1913篇 |
2009年 | 1533篇 |
2008年 | 2180篇 |
2007年 | 2184篇 |
2006年 | 1991篇 |
2005年 | 1777篇 |
2004年 | 1622篇 |
2003年 | 1377篇 |
2002年 | 1196篇 |
2001年 | 814篇 |
2000年 | 732篇 |
1999年 | 625篇 |
1998年 | 277篇 |
1997年 | 225篇 |
1996年 | 227篇 |
1995年 | 199篇 |
1994年 | 168篇 |
1993年 | 143篇 |
1992年 | 375篇 |
1991年 | 371篇 |
1990年 | 381篇 |
1989年 | 358篇 |
1988年 | 308篇 |
1987年 | 262篇 |
1986年 | 269篇 |
1985年 | 246篇 |
1984年 | 193篇 |
1983年 | 137篇 |
1982年 | 76篇 |
1981年 | 84篇 |
1980年 | 74篇 |
1979年 | 124篇 |
1978年 | 79篇 |
1977年 | 94篇 |
1974年 | 72篇 |
1973年 | 74篇 |
1971年 | 73篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Rajendra Kumar Gokhroo Kaul Anushri M.T. Tarik C. Kailash N. Rajesh K. Ashish G. Manish C. Subhash 《Indian heart journal》2021,73(2):205-210
BackgroundSacubitril/Valsartan (ARNI) has now class 1 recommendation for treatment of heart failure with reduced ejection fraction (HFrEF). It has been shown to reduce cardiovascular morbidity & mortality in Heart failure with reduced ejection fraction (HFrEF) and significant improvement in all echocardiographic parameters besides TEI index. Tei index is a marker of inflammation, myocardial cell metabolism and its contractile function has not been evaluated as a distinctive entity so we took up this study to evaluate the effects of ARNI on the LV functions using two dimensional (2D)ECHO parameters in Indian population and to assess TEI index for myocardial function.Methods256 patients with class II, III or IV HF and EF<40% were enrolled. 171(66.8%) were males and 85(33.2%) were females. Patients were evaluated at baseline, 6 and 12 months for LVEF, LV mass &,LVMPI. Drug was discontinued in 2 patients due to angioedema, in 5 patients due to acute kidney injury and in 2 patients due to hypotension. LV mass measurement done by linear echocardiographic method and Flow Doppler method used for TEI index calculation.ResultsBaseline parameters in 247 patients were mean EF = 26.33 ± 6.28%, mean LV mass = 270.84 ± 68.94 gm, mean Tei Index = 0.852 ± 0.22. ARNI use was associated with an average gradual increase in EF, from a mean baseline of 26.33 ± 6.28% to 33.88 ± 7.73%(p = 0.000001) after 1 year of treatment. There was a significant progressive reduction of 57.97 g/m2 in mean LV mass index after 1 year of treatment (p = 0.000001).TEI index showed significant reduction from baseline mean 0.85 ± 0.22 to 0.70 ± 0.12(p = 0.000001)after 1 year of treatment.ConclusionUse of ARNI as additive adjunct to standard care of treatment resulted in significant progressive decline in LV mass and increase in TEI index. 相似文献
992.
Lalit Kumar Bansal Stuti Gupta Arun Kumar Gupta Poras Chaudhary 《The Indian journal of tuberculosis》2021,68(2):272-278
Thyroid tuberculosis is a rare disease. Its incidence is low even in countries where prevalence of pulmonary tuberculosis is high (0.1–0.4%). In literature, there are only a few cases which were diagnosed as thyroid tuberculosis. It can be explained by a high resistance of the thyroid gland to infectious processes. However, the prevalence of tuberculosis has increased worldwide and thyroid involvement can be a primary manifestation of the disease. The incidence of extrapulmonary tuberculosis has been showing a progressive increase in the recent years(Barnes and Weatherstone, 1979). The most frequent clinical presentation is a solitary thyroid nodule that may present as a cystic nodule. It may also present as thyroid abscess with pain, fever and other non-specific signs and symptoms. ATT results in complete cure therefore it is important to differentiate it from other form of thyroiditis. Patients are usually euthyroid, but cases of hypothyroidism and hyperthyroidism are described. For accurate diagnosis of thyroid tuberculosis, clinical and radiological features are nonspecific and histological examination is required for confirmation of diagnosis. PCR may help in diagnosis. The authors encounter 3 cases of thyroid tuberculosis in last 5 year which are described in this article. The aim of this study is to review all the cases published in literature to describe clinical presentation, appropriate diagnostic method and possible treatment options of the disease. 相似文献
993.
Subhakar Kandi Tilak Kumar K Shravika Reddy Kandi Neeta Mathur Challa Devi D Rajesham Adepu 《The Indian journal of tuberculosis》2021,68(3):379-383
BackgroundTreatment outcomes for Multidrug-Resistant Tuberculosis (MDR TB) is generally poor. The study aims to know about the treatment outcomes of MDR-TB under programmatic conditions in Hyderabad District and to analyze the factors influencing the treatment outcomes.MethodsThis is a retrospective study in which 377 patients of Hyderabad district, Telangana state who were diagnosed with MDR TB and registered at Drug Resistance TB Treatment site of Government General & Chest Hospital, Hyderabad from 4th quarter 2008 to 4th quarter 2013 were included in the study. Impact of Demographic factors (age, sex; Nutritional status (BMI); Co-morbid condition (Diabetes, HIV, Hypothyroidism); Programmatic factors (time delay in the initiation of treatment); Initial Resistance pattern on the outcomes were studied and analyzed.ResultsThe treatment outcomes of Multidrug-Resistant Tuberculosis under Programmatic Conditions were: 57% cured, 21.8% died, 19.6% defaulted, 1.1% failed and 0.5% switched to XDR. Age, Sex, BMI had a statistically significant impact on treatment outcomes. Hypothyroidism and Delay in the initiation of treatment >1 a month had an impact on the outcomes though not statistically significant. NO impact on treatment outcomes was found when Rifampicin resistance & INH sensitive patients were compared with those resistant to both INH and Rifampicin.ConclusionTo reduce MDR-TB transmission in the community, improvement of treatment outcomes, via ensuring adherence, paying special attention to elderly patients is required. The Programmatic Management of Drug Resistance Tuberculosis (PMDT) should seriously think of providing Nutritional support to patients with low BMI to improve outcomes. In the programmatic conditions if we could address the problems like delay in initiation of treatment and proper management of comorbidities like HIV, Diabetes, Hypothyroidism would definitely improve the treatment outcomes. 相似文献
994.
Asha Frederick Mrinalini Das Kedar Mehta Ganesh Kumar Srinath Satyanarayana 《The Indian journal of tuberculosis》2021,68(1):51-58
BackgroundNo Indian studies have assessed the implementation of recent policy on pharmacy based surveillance and its contribution in TB notification. So, this study was conducted with objectives to describe: a) pharmacy based TB surveillance and TB notification, and b) experiences of pharmacy based surveillance implementation from the programme managers and pharmacists perspective.MethodsA mixed methods study—quantitative (cross-sectional) and qualitative (in-depth interviews) in two selected districts Dharmapuri and Salem districts of Tamil Nadu State, India.ResultsIn 2018, 45 (11%) of 397 pharmacies in Dharmapuri and 90 (6%) of 1457 pharmacies in Salem districts reported sale of anti-TB drugs to 1307 and 1673 persons respectively. Upon validation through direct patient contact 942 (72%) persons in Dharmapuri and 863 (52%) persons were identified as previously ‘un-notified’ TB patients. These patients constituted 20% and 29% of the total TB cases notified in Dharmapuri and Salem respectively. The enablers for implementing this activity were: understanding the importance of notification, availability of resources (manpower, computers) to record, report and validate the patient data, repeated trainings and partnerships. The barriers were: patients' hesitancy to share their details to pharmacists (confidentiality), cumbersome recording and reporting process, difficulties in recording patient details during high workload busy business hours.ConclusionThis process contributed about one-fourth of the TB patients notified in these districts. Its implementation needs to be strengthened and should be scaled up in other parts of the country. 相似文献
995.
Akhil Kapoor Vanita Noronha Vijay M. Patil Nandini Menon Amit Joshi George Abraham Kumar Prabhash 《Medicine》2021,100(13)
Immune checkpoint inhibitors (ICIs) are rapidly being incorporated as treatment option either alone or in combination with chemotherapy in most of the solid tumors. Since there is very limited data of ICI in patients with poor performance status (PS) from the real world settings, we performed a retrospective audit of patients who received ICI and report the analysis based on ECOG PS of these patients.This study is a retrospective audit of a prospectively collected database of patients receiving ICIs for advanced solid tumors in any line between August 2015 and November 2018 at Tata Memorial Hospital, Mumbai, India. All statistical calculations were performed using SPSS statistical software for windows version 20.0.A total of 155 patients who received ICIs during the specified period were evaluated for this study. Baseline ECOG PS 0–1 (n = 103, 66.4%) patients was associated with median OS 9.1 (95% CI [confidence interval], 4.4-NR) months when compared to ECOG 2–4 (n = 52, 33.5%) which had a median OS of 2.9 (95% CI; 1.8–5.5) months (HR, 1.7, 95% CI, 1.1–2.7, log rank P = .017). The disease control rate for the poor PS group was 34.6%. However, 27.3% patients (95% CI: 20.3–34.3) were still alive at 1 year. Median OS in patients with PS 2 was 3.7 months (95% CI: 0–11.6) as compared to 1.8 months (95% CI: 0.2–3.4) for those with PS 3–4 (HR-2.0; 95% CI: 1.0–3.9, P = .041). The tolerance to ICIs was good with no grade 3/4 toxicities in 44 (84.6%) patients.Immune checkpoint inhibitors are a safe and effective therapeutic option even in solid tumor patients with poor performance status. 相似文献
996.
997.
Digestive Diseases and Sciences - 相似文献
998.
Roongta Rashmi Mondal Sumantro Haldar Subhankar Kumar Mavidi Sunil Ghosh Alakendu 《Clinical rheumatology》2022,41(5):1591-1596
Clinical Rheumatology - We report the case of an 18-year-old male with Still’s disease for the last 3 years, in remission, who developed two flares of his disease after receiving two... 相似文献
999.
Kamyar Kalantar-Zadeh Philip Kam-Tao Li Ekamol Tantisattamo Latha Kumaraswami Vassilios Liakopoulos Siu-Fai Lui Ifeoma Ulasi Sharon Andreoli Alessandro Balducci Sophie Dupuis Tess Harris Anne Hradsky Richard Knight Sajay Kumar Maggie Ng Alice Poidevin Gamal Saadi Allison Tong 《Nefrología : publicación oficial de la Sociedad Espa?ola Nefrologia》2021,41(2):95-101
Living with chronic kidney disease (CKD) is associated with hardships for patients and their care-partners. Empowering patients and their care-partners, including family members or friends involved in their care, may help minimize the burden and consequences of CKD related symptoms to enable life participation. There is a need to broaden the focus on living well with kidney disease and re-engagement in life, including an emphasis on patients being in control. The World Kidney Day (WKD) Joint Steering Committee has declared 2021 the year of “Living Well with Kidney Disease” in an effort to increase education and awareness on the important goal of patient empowerment and life participation. This calls for the development and implementation of validated patient-reported outcome measures to assess and address areas of life participation in routine care. It could be supported by regulatory agencies as a metric for quality care or to support labelling claims for medicines and devices. Funding agencies could establish targeted calls for research that address the priorities of patients. Patients with kidney disease and their care-partners should feel supported to live well through concerted efforts by kidney care communities including during pandemics. In the overall wellness programme for kidney disease patients, the need for prevention should be reiterated. Early detection with a prolonged course of wellness despite kidney disease, after effective secondary and tertiary prevention programmes, should be promoted. WKD 2021 continues to call for increased awareness of the importance of preventive measures throughout populations, professionals, and policy makers, applicable to both developed and developing countries. 相似文献
1000.
Atiharsh Mohan Agarwal Tapas Kumar Singh 《Indian Journal of Critical Care Medicine》2015,19(5):286-288
Extracorporeal carbon dioxide removal (ECCO2R) is a valid alternative to consider in hypercapnic respiratory failure in chronic obstructive pulmonary disease (COPD) patients to avoid invasive ventilation when noninvasive ventilation fails. Here we report a similar case, after obtaining informed consent, where a patient suffering from severe hypercapnic respiratory failure due to COPD, was selected for ECCO2R and improved remarkably. 相似文献