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   9719篇
  免费   341篇
  国内免费   171篇
耳鼻咽喉   256篇
儿科学   238篇
妇产科学   252篇
基础医学   174篇
口腔科学   129篇
临床医学   859篇
内科学   1077篇
皮肤病学   50篇
神经病学   261篇
特种医学   328篇
外科学   3922篇
综合类   1253篇
预防医学   322篇
眼科学   117篇
药学   513篇
  7篇
中国医学   170篇
肿瘤学   303篇
  2024年   3篇
  2023年   156篇
  2022年   339篇
  2021年   395篇
  2020年   443篇
  2019年   298篇
  2018年   329篇
  2017年   264篇
  2016年   271篇
  2015年   316篇
  2014年   750篇
  2013年   632篇
  2012年   592篇
  2011年   598篇
  2010年   508篇
  2009年   445篇
  2008年   421篇
  2007年   413篇
  2006年   348篇
  2005年   245篇
  2004年   212篇
  2003年   161篇
  2002年   144篇
  2001年   142篇
  2000年   113篇
  1999年   136篇
  1998年   126篇
  1997年   106篇
  1996年   144篇
  1995年   116篇
  1994年   112篇
  1993年   91篇
  1992年   94篇
  1991年   99篇
  1990年   98篇
  1989年   67篇
  1988年   86篇
  1987年   80篇
  1986年   55篇
  1985年   55篇
  1984年   60篇
  1983年   44篇
  1982年   39篇
  1981年   31篇
  1980年   32篇
  1979年   8篇
  1978年   4篇
  1977年   5篇
  1976年   2篇
  1973年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
目的观察利多卡因联合庆大霉素含漱对小儿鼾症术后疼痛及8-异构前列腺素(8-iso-PG)、锰超氧化物歧化酶(MnSOD)水平的影响。方法前瞻性选取阜阳市人民医院耳鼻咽喉头颈外科于2019年3月至2020年3月收治的小儿鼾症患者100例,所有患者均择期在气管插管麻醉下行扁桃体和(或)腺样体切除术治疗。根据奇偶数分组法分为两组,其中对照组50例术后给予冰袋冰敷等常规处理,同时联合0.9%氯化钠溶液含漱作为安慰剂,观察组50例术后在常规处理基础上给予利多卡因联合庆大霉素含漱。记录两组术后疼痛程度、咽部黏膜消肿时间、首次进流食时间、住院时间和并发症情况,检测两组8-iso-PG、MnSOD的水平。结果观察组术后24、48、72 h时的疼痛视觉模拟(VAS)评分分别为(4.12±0.54)、(3.24±0.43)、(2.32±0.34)分,均明显低于对照组[(5.08±0.51)、(4.18±0.47)、(3.51±0.42)分],差异均有统计学意义(P<0.05)。观察组咽部黏膜消肿时间、首次进流食时间、住院时间为(28.89±3.64)h、(4.91±0.86)d、(5.04±0.91)d,均短于对照组[(33.05±4.51)h、(5.85±1.04)d、(5.91±1.13)d],差异均有统计学意义(P<0.05)。术后72 h,观察组8-iso-PG为(107.25±16.42)ng/L,显著低于对照组[(121.33±18.56)ng/L],MnSOD为(6.58±1.21)U/mL,显著高于对照组[(6.04±1.14)U/mL],差异均有统计学意义(P<0.05)。观察组术后发热和总并发症的发生率分别为4.00%和6.00%,低于对照组(16.00%、28.00%),但总出血、饮水反流、感染的发生率与对照组比较,差异无统计学意义(P>0.05)。结论利多卡因联合庆大霉素含漱可有效减轻小儿鼾症术后的疼痛程度,减轻机体应激反应,促进术后康复,且可降低并发症的发生。  相似文献   
2.
《Injury》2023,54(6):1702-1710
IntroductionPatients with cirrhosis are at higher risk for morbidity after injury. Acetabular fractures represent a highly morbid injury pattern. Few studies have specifically examined an effect of cirrhosis on risk of complications after acetabular fracture. We hypothesized that cirrhosis is independently associated with increased risk of inpatient complications following operative treatment of acetabular fractures.MethodsAdults patients with acetabular fracture who underwent operative treatment were identified from Trauma Quality Improvement Program data from 2015 to 2019. Patients with and without cirrhosis were matched on a propensity score predicting cirrhotic status and inpatient complications based on patient, injury, and treatment characteristics. The primary outcome was overall complication rate. Secondary outcomes included serious adverse event rate, overall infection rate, and mortality.ResultsAfter propensity score matching, 137 cirrhosis+ and 274 cirrhosis- remained. No significant differences existed in observed characteristics after matching. Compared to cirrhosis- patients, cirrhosis+ patients experienced 43.4% (83.9 vs 40.5%, p < 0.001) greater absolute risk difference of any inpatient complication, 29.9% (51.8 vs 21.9%, p < 0.001) greater absolute risk difference of serious adverse events, 28.5% (41.6 vs 13.1%, p < 0.001) greater absolute risk difference of any infection, and 2.9% (2.9% vs 0.0%, p = 0.02) greater absolute risk difference of inpatient mortality.ConclusionCirrhosis is associated with higher rates of inpatient complications, serious adverse events, infection, and mortality among patients undergoing operative repair of acetabular fracture.Level of EvidencePrognostic Level III.  相似文献   
3.
目的探讨腹腔镜完全腹膜外疝修补术(TEP)中两种不同方式处理阴囊疝疝囊的临床疗效及安全性。 方法回顾性分析2017年1月至2019年12月苏州市第九人民医院行完全腹膜外疝修补术治疗阴囊疝65例患者的病例资料。按术中疝囊处理方式不同分为A组(35例)和B组(30例)。A组患者疝囊横断,B组患者疝囊完全剥离。比较2组患者手术时间、术中出血量、术后住院时间及相关并发症发生情况。 结果A组手术时间、总并发症发生率均优于B组(P<0.05);2组患者术中出血量、术后住院时间、术后并发症发生率比较,差异均无统计学意义(P>0.05)。术后随访6~24个月,2组均未复发。 结论采用TEP术治疗阴囊疝安全有效,且可行。TEP术中采用疝囊横断或疝囊剥离对术中出血量、术后住院时间、术后并发症发生率无影响,可根据患者的实际情况适合选择。疝囊横断手术难度相对较低,手术时间短,术后并发症少,更适合基层医院开展。  相似文献   
4.
5.
This study aims to describe intraoperative complications in temporomandibular joint arthroscopy in patients with Wilkes stage II, III y IV. An analytic observational retrospective study. Inclusion criteria were patients who had no improvement with conservative treatment diagnosed as Wilkes II stage to Wilkes stage IV, and no previous TMJ surgery. Exclusion criteria were disc perforation observed by arthroscopy. Data collected from 458 patients (899 arthroscopies). Of this population, 772 (85.8%) arthroscopies correspond to women, and 127 men (14.1%). Of the sample evaluated, 368 (40.9%) were arthroscopic without discopexy, and 531 (59%) were arthroscopic with discopexy using resorbable pins. In total, 330 complications (36.7%) were found, of which 293 (32.5%) were implicated with iatrogenic damage to the anatomy, and 36 (4%) were associated with some instrument failure. Of this total number of complications, 191 (51.9%) of 386 corresponded to the arthroscopy without discopexy group and 138 (25.9%) of 531 corresponded to the arthroscopy with discopexy group. These study data suggest that the main complications were irrigation fluid extravasation (p = 0.000), and intra-articular bleeding (p = 0.001) followed by pin problems (p = 0.001) in cases of arthroscopies with discopexy. Within the limitations of the study it seems that the learning curve has an important influence on the occurrence of complications. At the beginning of the learning curve, complications are more related to anatomy. Afterwards, the rate of complications decreases but they are more related to the instruments used in advanced techniques. Therefore, proper training and a wide learning curve can reduce the risk of complications and if any occur, more timely management could be given.  相似文献   
6.
Cirrhosis causes a heavy global burden. In this review, we summarized up-to-date epidemiological features of cirrhosis and its complications. Recent epidemiological studies reported an increase in the prevalence of cirrhosis in 2017 compared to in 1990 in both men and women, with 5.2 million cases of cirrhosis and chronic liver disease occurring in 2017. Cirrhosis caused 1.48 million deaths in 2019, an increase of 8.1% compared to 2017. Disability-adjusted life-years due to cirrhosis ranked 16th among all diseases and 7th in people aged 50-74 years in 2019. The global burden of hepatitis B virus and hepatitis C virus-associated cirrhosis is decreasing, while the burden of cirrhosis due to alcohol and nonalcoholic fatty liver disease (NAFLD) is increasing rapidly. We described the current epidemiology of the major complications of cirrhosis, including ascites, variceal bleeding, hepatic encephalopathy, renal disorders, and infections. We also summarized the epidemiology of hepatocellular carcinoma in patients with cirrhosis. In the future, NAFLD-related cirrhosis will likely become more common due to the prevalence of metabolic diseases such as obesity and diabetes, and the prevalence of alcohol-induced cirrhosis is increasing. This altered epidemiology should be clinically noted, and relevant interventions should be undertaken.  相似文献   
7.
8.
于健  郭红玉  李月  常雅茹  曹虹 《骨科》2022,13(3):237-242
目的 探讨年龄校正Charlson合并症指数(age-adjusted Charlson comorbidity index,ACCI)对髋部骨折病人内科并发症的预测效果。方法 回顾性分析2015年1月至2020年12月于天津医院住院治疗的1 062例髋部骨折病人的资料,其中男317例,女745例,年龄为(69.81±13.43)岁。对病人住院病历资料进行回顾性ACCI评分,计算出每个病人的ACCI总评分,将其归类为低危0~2分,中危3~5分,高危6~8分,极高危≥9分。根据病人髋部骨折后是否出现并发症分为内科并发症组(593例)和非内科并发症组(469例)。比较两组病人年龄、骨折类型、住院时间、ACCI评分、冠心病、糖尿病、脑血管疾病、心力衰竭、贫血、低蛋白血症、脑萎缩、动脉硬化性疾病的差异,对上述差异有统计学意义的变量进一步行多因素Logistic回归分析。结果 两组年龄、骨折类型、住院时间、ACCI评分、冠心病、糖尿病、脑血管疾病、心力衰竭、贫血、低蛋白血症、动脉硬化性疾病的差异有统计学意义(P<0.05),多因素Logistic回归分析显示住院时间[OR=1.011,95% CI(1.006,1.017),P<0.001]、ACCI评分[OR=6.333,95% CI(4.949,8.103),P<0.001]、冠心病[OR=0.579,95% CI(0.409,0.872),P=0.008]和贫血[OR=1.536,95% CI(1.097,2.150),P=0.012]是髋部骨折病人发生内科并发症的独立危险因素。结论 单独使用ACCI预测髋部骨折病人的内科并发症具有一定的价值。  相似文献   
9.
ObjectivesTo describe our robotic Y intracorporeal neobladder (ICNB) technique and to report its post-operative complications and urodynamics (UD) findings.Subjectsand Methods: In this prospective study we enrolled patients affected by MIBC (T1-T4N0–N1M0) from 01/2017 to 06/2021 at our Centers. All the patients underwent robotic radical cystectomy (RARC) with Y–ICNB reconfiguration. Early and late complications were collected and classified according to Clavien-Dindo. Continence and potency at 1, 3, 6 and 12 months were evaluated. At the 3rd month of follow-up patients underwent UD. Finally, in a retrospective match paired analysis the functional outcomes of Y RARC patients were compared with a cohort of open Y radical cystectomy.Results45 patients were enrolled. Overall 30-day complications were observed in 25 (55,5%) patients and 30 to 90-days complications in 4 (8,9%). 9 patients (20%) had Clavien ≥3 complications. UDs revealed median neobladder capacity of 268 cc, with a median compliance of 13 ml/cm H20; the voiding phase showed a voiding volume and a post void residual (PVR) of 154 cc and 105 cc respectively. At 12 months of follow-up 4.4%, 15.5% and 4.4% of the patients experienced urge, stress and mix urinary incontinence respectively. The comparison between Y RARC and Y open RC revealed a higher neobladder capacity with open approach (p = 0.049) with subsequent better findings during the voiding phase in terms of maximum flow (p = 0.002), voiding volume (p = 0.001) and PVR (p = 0.01). Focusing on continence recovery, a slight trend in favor of RARC was shown without reaching the statistical significance.ConclusionsRobotic Y–ICNB is feasible and safe as shown by the low rate of postoperative complications. Satisfying UD functional outcomes are achievable, both during filling and voiding phase.  相似文献   
10.
目的分析自制中药包加压理疗裤在腹腔镜腹股沟疝修补术后并发症的防治效果。 方法收集2019年8月至2021年8月山西省中医药研究院普外科收治的腹股沟疝患者128例,按照随机数字表法,随机分为对照组和试验组,每组患者64例。2组患者均接受腹腔镜腹股沟疝修补术。对照组术后于腹股沟区沙袋加压并穿戴传统疝气带。试验组术后穿戴我科自制中药包加压理疗裤。对比2组临床指标及并发症发生情况。 结果试验组术后疼痛视觉模拟评分较对照组低,住院时间较对照组短,PZB服务质量量表评分较对照组高(P<0.05)。术后24 h及7 d,试验组血肿及血清肿发生率、阴囊肿胀及阴囊血肿发生率低于对照组(P<0.05)。术后30 d,2组血肿及血清肿发生率、阴囊肿胀及阴囊血肿发生率差异无统计学意义(P>0.05)。 结论腹腔镜腹股沟修补术后穿戴中药包加压理疗裤可减轻疼痛程度,降低血肿、血清肿及阴囊肿胀等术后并发症发生率,缩短住院时间,提高干预满意度。  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