首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   265篇
  免费   11篇
  国内免费   2篇
耳鼻咽喉   1篇
儿科学   1篇
妇产科学   17篇
基础医学   18篇
口腔科学   1篇
临床医学   5篇
内科学   44篇
皮肤病学   2篇
神经病学   34篇
特种医学   2篇
外科学   45篇
一般理论   1篇
预防医学   5篇
眼科学   1篇
药学   12篇
肿瘤学   89篇
  2022年   3篇
  2021年   12篇
  2020年   3篇
  2019年   5篇
  2018年   7篇
  2017年   4篇
  2016年   8篇
  2015年   4篇
  2014年   14篇
  2013年   13篇
  2012年   21篇
  2011年   25篇
  2010年   11篇
  2009年   8篇
  2008年   23篇
  2007年   15篇
  2006年   20篇
  2005年   26篇
  2004年   16篇
  2003年   12篇
  2002年   2篇
  2001年   4篇
  2000年   3篇
  1999年   2篇
  1998年   1篇
  1996年   2篇
  1995年   3篇
  1993年   2篇
  1992年   2篇
  1991年   4篇
  1990年   1篇
  1981年   1篇
  1970年   1篇
排序方式: 共有278条查询结果,搜索用时 15 毫秒
1.
Vocal cord palsy after adult cardiac surgery is often attributed to non-surgical mechanisms as tracheal intubation and central venous catheterisation. It may also be caused by injury of the recurrent laryngeal nerves by surgical dissection. We hereby present a review of relevant clinical reports. The cumulative incidence was 1.1% (33 in 2980). Main reported surgical mechanisms of injury were harvesting of internal thoracic artery and topical cold cardioprotection. Bilateral nerve palsy has been lethal on at least one occasion. Where vocal cord injury followed harvesting of the left internal thoracic artery, it was reported ipsilateral to the conduit.  相似文献   
2.
3.
BACKGROUND: In the present phase II multicenter study, we assessed the efficacy and tolerability of the combination of gemcitabine and carboplatin in patients with advanced pancreatic cancer. PATIENTS AND METHODS: Patients with previously untreated, locally advanced or metastatic pancreatic cancer were treated with gemcitabine 800 mg/m(2) on days 1 and 8 and carboplatin at an AUC of 4 on day 8 of a 3-week cycle, for a total of six cycles. Primary end points were response rate and clinical benefit; secondary end points were, survival, time to progression (TTP) and toxicity. RESULTS: A total of 50 patients were enrolled in the study, 47 of whom were eligible for treatment. The median age was 63 years (range 34-76) and the median Karnofsky performance status (PS) was 80%. Patients received a median of six cycles (range 1-11). Among 35 patients evaluable for response, eight (17%) achieved partial response; 15 (32%) and 12 (25%) patients had stable and progressive disease, respectively. The median overall survival was 7.4 months; the median TTP was 4.4 months and the 1-year survival was 28%. The observed clinical benefit response was remarkable. After the second cycle of chemotherapy, 21 of 31 (68%) patients experienced pain improvement and reduced analgesic consumption. At the same time, 35% and 56% of our patients significantly improved their Karnofsky PS and weight, respectively. Overall, the treatment was well tolerated. The most common grade 3-4 toxicities were hematological, including 8% anemia, 6% neutropenia and 13% thrombocytopenia. CONCLUSIONS: The combination of gemcitabine plus carboplatin is a moderately active treatment for patients with locally advanced and metastatic pancreatic cancer. This regimen has an acceptable toxicity profile and provides a significant clinical benefit, and hence warrants further investigation.  相似文献   
4.
BACKGROUND: Irinotecan (IRI) and oxaliplatin (OXA) are effective in the treatment of colorectal cancer. Previously untreated patients with advanced colorectal carcinoma (CRC) were randomly assigned to receive IRI plus leucovorin (LV)/5-fluorouracil (5-FU), or OXA plus LV/5-FU in order to compare the response rates, time-to-tumor progression, overall survival rates, and toxicity profiles of these two agents. MATERIALS AND METHODS: From January 1999 to February 2002, 295 patients were randomized to receive either IRI/LV/5-FU or OXA/LV/5-FU. The treatment schedules consisted of weekly IRI 70 mg/m(2) or OXA 45 mg/m(2) plus LV 200 mg/m(2) followed immediately by intravenous bolus 5-FU 450 mg/m(2) for 6 weeks, followed by a 2-week rest period. Treatment was continued for up to four cycles or until disease progression, unacceptable toxicity or patient refusal. RESULTS: There were no significant differences between the study arms in the overall response rate (33% with IRI/LV/5-FU versus 32% with OXA/LV/5-FU based on responses demonstrated on a single evaluation; 23% with IRI/LV/5-FU versus 22.3% with OXA/LV/5-FU based on responses confirmed according to WHO criteria) median time to progression (8.9 versus 7.6 months), and median overall survival (17.6 versus 17.4 months). Toxicity profiles (grades 3 and 4) were similar in the IRI and OXA arms (diarrhea 12.3% and 9.8%, neutropenia 8.2% and 4.9%, and febrile neutropenia 1.4% and 1.4%, respectively), with the exception of grade 3 sensory neuropathy, which almost exclusively occurred in the OXA arm (0% versus 5.6%; P=0.003, Fisher's exact test). CONCLUSION: The IRI/LV/5-FU and OXA/LV/5-FU regimens demonstrated equally substantial efficacies and manageable toxicity profiles in the first-line treatment of patients with advanced CRC. However, IRI/LV/5-FU may be the preferable regimen to avoid significant neurotoxicity associated with OXA-LV/5-FU.  相似文献   
5.
PURPOSE: Osteonecrosis of the jaw (ONJ) has been associated recently with the use of pamidronate and zoledronic acid. We studied the incidence, characteristics, and risk factors for the development of ONJ among patients treated with bisphosphonates for bone metastases. PATIENTS AND METHODS: ONJ was assessed prospectively since July 2003. The first bisphosphonate treatment among patients with ONJ was administered in 1997. Two hundred fifty-two patients who received bisphosphonates since January 1997 were included in this analysis. RESULTS: Seventeen patients (6.7%) developed ONJ: 11 of 111 (9.9%) with multiple myeloma, two of 70 (2.9%) with breast cancer, three of 46 (6.5%) with prostate cancer, and one of 25 (4%) with other neoplasms (P = .289). The median number of treatment cycles and time of exposure to bisphosphonates were 35 infusions and 39.3 months for patients with ONJ compared with 15 infusions (P < .001) and 19 months (P = .001), respectively, for patients with no ONJ. The incidence of ONJ increased with time to exposure from 1.5% among patients treated for 4 to 12 months to 7.7% for treatment of 37 to 48 months. The cumulative hazard was significantly higher with zoledronic acid compared with pamidronate alone or pamidronate and zoledronic acid sequentially (P < .001). All but two patients with ONJ had a history of dental procedures within the last year or use of dentures. CONCLUSION: The use of bisphosphonates seems to be associated with the development of ONJ. Length of exposure seems to be the most important risk factor for this complication. The type of bisphosphonate may play a role and previous dental procedures may be a precipitating factor.  相似文献   
6.
7.
8.
Background. Although the TNM system is useful in predicting survival in resected colorectal cancer, heterogeneity within the same stages regarding prognosis exists. We are presenting a pooled analysis of prognostic factors from two randomized studies of adjuvant treatment conducted by the Hellenic Cooperative Oncology Group. Patients and Methods. Patients with stage II or III colon (n=279) or rectal (n=220) cancer were included in this analysis. Following surgery, patients received: 5-fluorouracil/leucovorin (5-FU/LV) (n=135), 5-FU/LV and interferon Alfa-2a (IFNA-2a) (n=138), 5-FU/LV and pelvic chemoradiotherapy (n=106), and pelvic chemoradiotherapy alone (n=108). Results. Median follow up was 92 mo. The number of involved lymph nodes (LNs), tumor differentiation, and the presence of regional implants were independent prognostic factors for both OS and TTP, while nerve invasion was only significant for TTP. Patients were stratified into three prognostic groups (low-risk: no LNs and grade 1/2; high-risk: >3 LNs and grade 3/4; intermediate-risk: remaining patients) with distinct differences in 5-yr survival (84.7% vs 57.6% vs 32.4%) and 5-yr TTP (81.2% vs 54.5% vs 28.6%). Conclusion. The combination of clinicopathological prognostic factors can be more informative than the traditional TNM staging system. Such stratification may be necessary in randomized trials and could be useful in deciding the most appropriate adjuvant treatment strategies.  相似文献   
9.
ObjectiveTo examine the effect of older versus younger age on change in anthropometric and metabolic measures during extended treatment of psychotic depression with sertraline plus olanzapine.MethodsTwo hundred and sixty-nine men and women aged 18–85 years with an episode of psychotic depression were treated with open-label sertraline plus olanzapine for up to 12 weeks. Participants who remained in remission following an 8-week stabilization phase were eligible to participate in a 36-week randomized controlled trial (RCT) that compared the efficacy and tolerability of sertraline plus olanzapine with sertraline plus placebo. Weight, waist circumference and plasma lipids, glucose, HbA1c, and insulin were measured at regular intervals during the acute, stabilization and randomized phases of the study. Linear mixed models were used to analyze the trajectories of anthropometric and metabolic measures.ResultsParticipants aged 60 years or older experienced less weight gain and less increase in cholesterol during the combined acute and stabilization phases of the study compared with those aged 18–59 years. At the acute-stabilization termination visit, mean weight in older participants was 6.5 lb. less than premorbid weight, whereas it was 17.9 lb. more than premorbid weight in younger participants. In the RCT, there was a significant interaction of treatment and age group for the trajectory of weight, but the post hoc tests that compared age groups within each treatment arm were not statistically significant. There were no clinically significant differences between younger and older participants in glycemic measures.ConclusionOlder patients with psychotic depression experienced less increase in weight and total cholesterol than their younger counterparts during acute and stabilization treatment with sertraline plus olanzapine. In the older group, weight gained during the acute and stabilization phases appeared to be partial restoration of weight lost during the index episode of depression, whereas weight gain in younger participants was not.  相似文献   
10.
Pouchitis occurs in up to one half of patients after restorative proctocolectomy with ileal pouch-anal anastomosis (IPAA). Cytomegalovirus (CMV) and Clostridium difficile are among the commonest secondary identifiable etiologies. A 17-year-old male with ulcerative colitis underwent IPAA due to refractory disease. Nine months later he experienced bloody diarrhea and fever. Laboratory testing and endoscopy confirmed pouch inflammation. Testing for C. difficile toxins A and B was positive. Histology revealed affluent inclusion bodies and immunohistochemistry detected reactivity against CMV protein. Treatment with metronidazole and vancomycin offered partial improvement, whereas the addition of gancyclovir led to a successful recovery. One month after completion of treatment symptoms recurred. Repeat testing precluded an identifiable infectious cause and the diagnosis of idiopathic chronic pouchitis was established. The patient is currently on maintenance treatment with the probiotic compound VSL#3.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号