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   14581篇
  免费   725篇
  国内免费   154篇
耳鼻咽喉   51篇
儿科学   217篇
妇产科学   1780篇
基础医学   1301篇
口腔科学   61篇
临床医学   1922篇
内科学   445篇
皮肤病学   103篇
神经病学   549篇
特种医学   261篇
外科学   1588篇
综合类   3089篇
预防医学   1860篇
眼科学   43篇
药学   1671篇
  31篇
中国医学   232篇
肿瘤学   256篇
  2024年   32篇
  2023年   130篇
  2022年   347篇
  2021年   451篇
  2020年   417篇
  2019年   384篇
  2018年   332篇
  2017年   452篇
  2016年   550篇
  2015年   504篇
  2014年   1067篇
  2013年   1099篇
  2012年   1119篇
  2011年   1111篇
  2010年   855篇
  2009年   856篇
  2008年   712篇
  2007年   690篇
  2006年   634篇
  2005年   508篇
  2004年   400篇
  2003年   321篇
  2002年   237篇
  2001年   195篇
  2000年   158篇
  1999年   136篇
  1998年   102篇
  1997年   112篇
  1996年   122篇
  1995年   229篇
  1994年   159篇
  1993年   135篇
  1992年   140篇
  1991年   133篇
  1990年   106篇
  1989年   89篇
  1988年   50篇
  1987年   26篇
  1986年   42篇
  1985年   39篇
  1984年   39篇
  1983年   23篇
  1982年   29篇
  1981年   24篇
  1980年   23篇
  1979年   18篇
  1978年   18篇
  1977年   18篇
  1976年   16篇
  1972年   16篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
ObjectiveTo compare levels of postoperative oxycodone use and incisional pain between two randomized groups—an intervention and a control.DesignMixed-methods design; quantitative data achieved via a randomized controlled trial, with qualitative data collected on binder use. The primary variable was oxycodone (in milligrams) required during the first 48 hours after birth, and the secondary variable was incisional pain levels measured on Postoperative Days 1 and 2.SettingAcute-care community hospital in Wheat Ridge, Colorado, and an acute care urban hospital in Denver, Colorado.ParticipantsA total of 220 individuals in the postpartum period after having cesarean birth.Interventions/MeasurementsParticipants were randomized to the intervention group (binder) or the control group (no binder). Data were collected on opioid usage for the first 48 hours. Participants in both groups were asked to rate their incisional pain on Postoperative Day 1 (24 hours after birth) and Postoperative Day 2 (48 hours after birth). Participants in the binder group were also asked to provide feedback on their experience wearing the binder.ResultsA total of 196 participants completed the study. The overall amount of oxycodone taken by individuals in the binder group was lower than that in the control group, but the difference was not statistically significant (p = .10). Pain scores in the binder group were significantly lower on Day 2 compared with the control group (p = .002). The majority of individuals in the binder group provided positive feedback about their experience wearing the binder.ConclusionIndividuals routinely receive medications to assist with pain management postoperatively. Because of growing concerns related to the nation’s opioid addiction crisis, there is interest in using multimodal treatments to achieve adequate pain control for individuals postoperatively. Abdominal binders are a low-cost intervention to assist with pain management and, given the results of this study, seem like a reasonable option to consider.  相似文献   
2.
目的:总结后颅窝正常和异常的胎儿小脑及小脑蚓部的矢状面的声像学特征,了解小脑细微结构的改变与胎儿畸形的关系。  相似文献   
3.
目的 探讨腹腔镜下子宫双侧动脉阻断术联合清宫术治疗剖宫产瘢痕妊娠疗效及对内分泌的影响.方法 选择2011年1月至2015年12月剖宫产瘢痕妊娠患者57例,其中A组32例患者给予超声引导下清宫术治疗,B组25例患者给予腹腔镜下子宫双侧动脉阻断术联合清宫术治疗,比较两组患者出血量、住院时间、月经复潮时间、术后人绒毛膜促性腺激素(hCG)降至正常时间,并发症情况及术前(T0)、术后第1d(T1)、第3d(T2)神经内分泌激素水平.结果 ①B组患者出血量低于A组,住院时间、月经复潮时间短于A组,比较差异有统计学意义(t出血量=31.85,k院时间=9.36,t月经复t潮时间=16.37,均P<0.05);②B组患者并发症发生率为8.00%,低于A组的15.63%,比较差异有统计学意义(x2=9.35,P<0.05);③B组T1、T2血清COR、β-EP、GLU水平低于A组(CORF交互=17.67,β-EPF交互=132.36,6LUF交互=155.38,均P<0.05).结论 腹腔镜下子宫双侧动脉阻断术联合清宫术治疗剖宫产瘢痕妊娠微创优势明显,安全性高,对内分泌影响较轻.  相似文献   
4.
ObjectivesThis study aimed to determine the effect of lower leg compression during cesarean section (CS) on post-spinal hypotension (PSH) and neonatal hemodynamic parameters.MethodsThis study is a nonrandomized controlled clinical trial conducted in the cesarean delivery unit of the National Medical institute, Damanhour, Egypt. The sample included 120 parturients (60 intervention and 60 control). The researchers developed three tools for data collection: sociodemographic data and reproductive history interview schedule, electronic monitoring of maternal hemodynamic parameters, and neonatal hemodynamic assessment sheet. All parturients received ordinary pre-operative care. For the intervention group, a long elastic stocking (ordinary pressure 20–30 mmHg, 1 mmHg = 0.133 kPa) was applied on both legs during cesarean section. The control group received the same care without the elastic stocking.ResultsSystolic blood pressure, diastolic blood pressure, and mean arterial blood pressure were significantly higher in the intervention group throughout the entire operation period except in the last 5–15 min. Heart rate was significantly lower in the intervention group. Only 13.3% of the intervention group took ephedrine compared with 45% of the control group. Apgar score was higher among neonates of intervention group compared with the control group at 1 min. Neonatal acidosis was significantly higher in the control group than in the contral group.ConclusionLower leg compression technique can effectively reduce PSH and neonatal acidosis.  相似文献   
5.
邵奇敏  刘虹 《全科护理》2022,20(4):530-532,535
目的:探讨园艺互动干预应用于维持性血液透析病人中的效果。方法:选择本院收治的行维持性血液透析病人157例,按照入院时间先后顺序分为对照组77例,观察组80例。对照组实施常规干预,观察组实施园艺互动干预。对比两组干预前后心理状态、应对方式、生活质量及总体幸福感变化。结果:观察组干预12周后症状自评量表(SCL-90)各维度评分低于对照组(P<0.05);观察组干预12周后积极应对评分高于对照组,消极应对评分低于对照组(P<0.05);观察组生活质量各维度评分高于对照组(P<0.05);观察组总体幸福感评分高于对照组(P<0.05)。结论:园艺互动干预应用于维持性血液透析病人可改善心理状态及应对方式,提升生活质量与总体幸福感。  相似文献   
6.
7.
A review of the literature was performed to explore the association between prenatal education and rates of primary cesarean birth for women at low risk for cesarean birth. Most women who are nulliparous with a singleton fetus of term gestational age and in the vertex position are considered to be at low risk and favorable for a vaginal birth, yet the cesarean birth rate for women at low risk was 25.6% in 2019. It has been suggested that the rise in the cesarean birth rate among low-risk women may not be due to medical indications but, rather, to nonmedical factors, such as a provider’s or woman’s preference or lack of prenatal education. Evidence from this literature review supports the premise that prenatal education classes should be routinely incorporated into maternity care in an effort to reduce cesarean birth rates for the low-risk population.  相似文献   
8.
9.
目的:探讨罗哌卡因联合舒芬太尼在剖宫产术后镇痛中的临床疗效。方法方便选取2014年3月—2015年3月该院麻醉科收诊的剖宫产产妇60例,随机法分为观察组及对照组各30例,对照组术后给予罗哌卡因联合吗啡镇痛治疗,观察组术后给予罗哌卡因联合舒芬太尼镇痛治疗,记录并分析两组产妇镇痛效果。结果观察组术后2h、8h、12 h、24 hVAS评分分别为(1.98±0.81)分、(2.28±0.78)分、(1.66±0.67)分、(1.17±0.61)分,均低于对照组(3.51±1.07)分、(3.82±1.03)分、(3.24±0.95)分、(2.16±0.55)分,且差异具有统计学意义(P<0.05);观察组术后肌力恢复正常时间和肛门排气时间分别为(7.28±1.16)h、18.49±1.71)h,均低于对照组(15.67±3.59)h、20.84±2.10)h,且差异有统计学意义(P<0.05);③观察组产妇术后不良反应发生率为6.67%,显著低于对照组26.67%,且差异具有统计学意义(P<0.05);结论罗哌卡因联合舒芬太尼在剖宫产术后镇痛中的效果优于罗哌卡因联合吗啡,不良反应低,能有效缓解孕妇术后疼痛。  相似文献   
10.
手术室新护士三年阶梯式培训模式探讨   总被引:18,自引:2,他引:16  
目的探讨手术室新护士三年培训模式和方法。方法采用三年阶梯式培养模式,建立完整的系统培训架构,包括培训对象的界定、培训原则及目的、培训目标师资队伍的培养、阶段培养计划、使用培训手册、培训考核体系的建立、培训评价体系的建立等。结果新护士培训系统、科学。结论新护士三年阶梯式培养值得深入研究和推广应用。  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