全文获取类型
收费全文 | 969篇 |
免费 | 65篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 20篇 |
儿科学 | 37篇 |
妇产科学 | 5篇 |
基础医学 | 82篇 |
口腔科学 | 25篇 |
临床医学 | 97篇 |
内科学 | 219篇 |
皮肤病学 | 7篇 |
神经病学 | 70篇 |
特种医学 | 41篇 |
外科学 | 198篇 |
综合类 | 11篇 |
一般理论 | 1篇 |
预防医学 | 34篇 |
眼科学 | 28篇 |
药学 | 87篇 |
中国医学 | 2篇 |
肿瘤学 | 75篇 |
出版年
2024年 | 4篇 |
2023年 | 14篇 |
2022年 | 42篇 |
2021年 | 89篇 |
2020年 | 52篇 |
2019年 | 51篇 |
2018年 | 63篇 |
2017年 | 36篇 |
2016年 | 38篇 |
2015年 | 39篇 |
2014年 | 56篇 |
2013年 | 61篇 |
2012年 | 98篇 |
2011年 | 86篇 |
2010年 | 40篇 |
2009年 | 30篇 |
2008年 | 47篇 |
2007年 | 50篇 |
2006年 | 44篇 |
2005年 | 34篇 |
2004年 | 26篇 |
2003年 | 19篇 |
2002年 | 11篇 |
2001年 | 2篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 1篇 |
排序方式: 共有1039条查询结果,搜索用时 15 毫秒
1.
Rajesh Venkataraman Karthik R. Vaidyanathan Madhu N. Sankar Kotturathu M. Cherian 《Journal of cardiac surgery》2009,24(4):443-445
Abstract Dissection of the pulmonary autograft is an extremely rare complication requiring emergent treatment as there is a chance of rupture and proximal aortic involvement. The autograft dissection can involve the aortic annulus, causing separation of leaflets from the annulus in addition to causing annular dilatation, thereby precluding resuspension of leaflets. The usual treatment in such cases is to perform the Bentall procedure, which involves placing a valved conduit (usually mechanical valve) and thereby necessitating anticoagulation. This report describes a case of successful valve-sparing aortic root replacement following the Ross procedure with dissection of autograft. 相似文献
2.
J Smith S Karthik J P A Lodge J A C Thorpe 《European journal of cardio-thoracic surgery》2004,26(3):652-654
A 63-year-old man presented with a 2 month history of intermittent right subcostal and shoulder tip pain. Preoperative imaging confirmed a locally advanced right lower lobe lung tumour involving the diaphragm and liver. Bronchoscopic biopsy confirmed squamous cell carcinoma and mediastinoscopy was negative. The patient underwent a right bilobectomy with resection of the right hemi-diaphragm and a right hemi-hepatectomy. His postoperative recovery was satisfactory and he remains well 18 months after the surgery. We believe that in selected cases, patients with locally advanced lung tumours invading the liver may have a survival advantage following resection. 相似文献
3.
4.
Beatrice C. Go Cammille C. Go Kevin Chorath Alvaro Moreira Karthik Rajasekaran 《世界耳鼻咽喉头颈外科杂志(英文)》2022,8(2):107
ObjectiveManagement of postoperative pain after head and neck cancer surgery is a complex issue, requiring a careful balance of analgesic properties and side effects. The objective of this review is to discuss the efficacy and safety of multimodal analgesia (MMA) for these patients.MethodsPubmed, Cochrane, Embase, Scopus, and clinicaltrials.gov were systematically searched for all comparative studies of patients receiving MMA (nonsteroidal anti‐inflammatory drugs (NSAIDs), acetaminophen, anticonvulsants, local anesthetics, and corticosteroids) for head and neck cancer surgeries. The primary outcome was additional postoperative opioid usage, and secondary outcomes included subjective pain scores, complications, adverse effects, and 30‐day outcomes.ResultsA total of five studies representing 592 patients (MMA, n = 275; non‐MMA, n = 317) met inclusion criteria. The most commonly used agents were gabapentin, NSAIDs, and acetaminophen (n = 221), NSAIDs (n = 221), followed by corticosteroids (n = 35), dextromethorphan (n = 40), and local nerve block (n = 19). Four studies described a significant decrease in overall postoperative narcotic usage with two studies reporting a significant decrease in hospital time. Subjective pain scores widely varied with two studies reporting reduced pain at postoperative day 3. There were no differences in surgical outcomes, medical complications, adverse effects, or 30‐day mortality and readmission rates.ConclusionMMA is an increasingly popular strategy that may reduce dependence on opioids for the treatment of postoperative pain. A variety of regimens and protocols are available for providers to utilize in the appropriate head and neck cancer patient. 相似文献
5.
Skye K. Lawlor Christopher M. Low Matthew L. Carlson Karthik Rajasekaran Garret Choby 《世界耳鼻咽喉头颈外科杂志(英文)》2022,8(2):118
ObjectiveTo comprehensively review the recent published literature to characterize current trends of burnout and well‐being among otolaryngology trainees.MethodsStudy design: systematic review and meta‐analysis. A comprehensive literature review from 2000 to 2021 of studies related to otolaryngology resident burnout and well‐being, as well as the general topic of well‐being among surgical residents was completed. All included studies were summarized qualitatively. For the quantitative analysis, only articles reporting a Maslach burnout inventory (MBI), modified MBI or Mini‐Z‐ Burnout assessment were included.ResultsTwenty‐five articles were included in the qualitative summary and nine articles in the quantitative analysis. In the qualitative summary, trainees were reported to have increased levels of distress and emotional hardening compared to attending otolaryngologists. Total hours worked per week and female gender were associated with worsened well‐being. Residency program strategies to improve trainee well‐being include program‐sponsored wellness activities, dedicated wellness champions, and assistance with clerical burden. Implementation of protected nonclinical time has been shown to decrease burnout and increase well‐being among trainees. Moreover, formal trainee mentorship programs have also been shown to reduce trainee burnout and stress. In the quantitative analysis, rates of trainee burnout ranged from 29.7% to 86% with an overall trend towards reduced rates of burnout from 2006 to 2021. Utilizing a weighted average, the overall burnout among otolaryngology residents was 58.6%.ConclusionsRates of burnout remain high among otolaryngology trainees. Implementing formal mentorship programs and providing protected time during regular work hours appear to be effective tools to improve resident well‐being. 相似文献
6.
Kostandinos Sideras David W Hillman Karthik Giridhar Brenda F Ginos Richard C Tenglin Heshan Liu Beiyun Chen Winston Tan Gerald G Gross Rex B Mowat Amylou C Dueck Edith A Perez Alvaro Moreno-Aspitia 《The oncologist》2022,27(5):338
BackgroundAnthracycline use in metastatic breast cancer (MBC) is hindered by cumulative exposure limits and risk of cardiotoxicity. Pixantrone, a novel aza-anthracenedione with structural similarities to mitoxantrone and anthracyclines, is theorized to exhibit less cardiotoxicity, mainly due to lack of iron binding. We conducted a randomized phase II study to evaluate the efficacy and safety of 2 dosing schedules of pixantrone in patients with refractory HER2-negative MBC.MethodsIntravenous pixantrone was administered at 180 mg/m2 every 3 weeks (group A) versus 85 mg/m2 on days 1, 8, and 15 of a 28-day cycle (group B). Primary endpoint was objective response rate (ORR) and secondary endpoints included progression-free survival (PFS), median 6-month PFS, overall survival (OS), safety, quality of life, and serial assessment of circulating tumor cells. A 20% ORR was targeted as sufficient for further testing of pixantrone in this patient population.ResultsForty-five patients were evaluable, with 2 confirmed partial responses in group A and 1 in group B. The trial was terminated due to insufficient activity. Overall median PFS and OS were 2.8 (95% confidence interval [CI]: 2.0-4.1) and 16.8 (95% CI: 8.9-21.6) months, respectively. Notable overall grade 3-4 adverse events were the following: neutrophil count decrease (62%), fatigue (16%), and decrease in ejection fraction (EF) (4%).ConclusionPixantrone has insufficient activity in the second- and third-line MBC setting. It appears, however, to have limited cardiotoxicity. (ClinicalTrials.gov ID: ). NCT01086605相似文献
7.
8.
9.
Arvind Arvind Muhammad Adil Abbas Khan Karthik Srinivasan Jeremy Roberts 《Indian Journal of Plastic Surgery》2014,47(1):56-60
Introduction:
Gynaecomastia is a common problem in the male population with a reported prevalence of up to 36%. Various treatment techniques have been described but none have gained universal acceptance. We reviewed all gynaecomastia patients operated on by one consultant over a 7-year period to assess the morbidity and complication rates associated with the procedure.Materials and Methods:
Clinical notes and outpatient records of all patients who underwent gynaecomastia correction at University Hospital North Staffordshire between 01/10/2001 to 01/10/2009 were retrospectively reviewed. A modified version of the Breast Evaluation Questionnaire was used to assess patients satisfaction with the procedure.Results:
Twenty-nine patients and a total of 53 breasts were operated on during the study period. Patients underwent either liposuction alone (6 breasts - 11.3%), excision alone (37 breasts - 69.8%) or both excision and liposuction (10 breasts - 18.9%). Twelve operated breasts (22.6%) experienced some form of complication. Minor complications included seroma (2 patients), superficial wound dehiscence (2 patients) and minor bleeding not requiring theatre (3 patients). Two patients developed haematomas requiring evacuation in theatre. No cases of wound infection, major wound dehiscence or revision surgery were encountered. Twenty-six patients (89.7%) returned the patient satisfaction questionnaire. Patients scored an average 4.12 with regards comfort of their chest in different settings, 3.98 with regards chest appearance in different settings, and 4.22 with regards satisfaction levels for themselves and their partner/family. Overall complication rate was 22.6%. Grade III patients experienced the highest complication rate (35.7%), followed by grade II (22.7%) and grade I (17.6%). Overall complication rates among the excision only group was the highest (29.8%) followed by the liposuction only group (16.7%) and the liposuction and excision group (10.0%). There were high satisfaction rates amongst both patients and surgeon. Eleven patients (37.9%) had their outcome classified as ‘excellent’ by the operating surgeon, 16 patients (55.2%) as ‘good’, 1 (3.4%) as ‘satisfactory’ and 1(3.4%) as ‘poor’.Conclusion:
Gynaecomastia is a complex condition which poses a significant challenge to the plastic surgeon. Despite the possible complications our case series demonstrates that outcomes of operative correction can be favourable and yield high levels of satisfaction from both patient and surgeon.KEY WORDS: Plastic Surgery, University Hospital North Staffordshire, Correction, gynaecomastia, surgery 相似文献10.
Karthik Santhanakrishnan Nizar Yonan Paul Callan Ebrahim Karimi Mohamed Al-Aloul Rajamiyer Venkateswaran 《Clinical transplantation》2019,33(8)
Cytomegalovirus (CMV) is the most important infectious agent in solid organ transplant recipients and has a major impact on morbidity and mortality. Most cases are well managed with antiviral agents, but CMV hyperimmune globulin (CMVIg) can be used alongside antiviral therapy for prophylaxis in high‐risk thoracic organ recipients and to treat life‐threatening CMV infection or disease. CMVIg may also improve antiviral host defences when genetic resistance to antivirals or unwanted side effects occur. In this single‐center, retrospective study, we reviewed the CMVIg use to supplement antiviral therapy as a “rescue therapy” in cardiothoracic transplant recipients. These comprised 12 single lung, 11 double lung, and 12 heart transplant recipients. Patients received a median of 2 doses of CMVIg, most often in combination with ganciclovir or valganciclovir, and reduced immunosuppression. One week after rescue therapy was initiated, CMV DNA levels were significantly reduced, and after four weeks, CMV DNA was undetectable in 73% patients. Only one patient died as a result of CMV‐related disease. No significant adverse effects were observed. We conclude that CMVIg rescue therapy is safe, well tolerated, and effective at controlling viral replication in cardiothoracic transplant recipients. 相似文献