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   1467篇
  免费   257篇
  国内免费   2篇
耳鼻咽喉   1篇
儿科学   601篇
妇产科学   251篇
基础医学   75篇
口腔科学   13篇
临床医学   238篇
内科学   61篇
皮肤病学   11篇
神经病学   11篇
特种医学   1篇
外科学   37篇
综合类   36篇
预防医学   333篇
眼科学   1篇
药学   35篇
  3篇
中国医学   2篇
肿瘤学   16篇
  2023年   67篇
  2022年   51篇
  2021年   111篇
  2020年   136篇
  2019年   160篇
  2018年   108篇
  2017年   93篇
  2016年   75篇
  2015年   67篇
  2014年   92篇
  2013年   119篇
  2012年   77篇
  2011年   60篇
  2010年   50篇
  2009年   54篇
  2008年   58篇
  2007年   71篇
  2006年   55篇
  2005年   37篇
  2004年   26篇
  2003年   29篇
  2002年   16篇
  2001年   19篇
  2000年   14篇
  1999年   11篇
  1998年   4篇
  1997年   8篇
  1996年   7篇
  1995年   9篇
  1994年   3篇
  1993年   4篇
  1992年   1篇
  1991年   8篇
  1990年   1篇
  1989年   3篇
  1988年   4篇
  1987年   3篇
  1986年   5篇
  1985年   2篇
  1984年   5篇
  1983年   1篇
  1979年   1篇
  1974年   1篇
排序方式: 共有1726条查询结果,搜索用时 15 毫秒
1.
2.
目的 通过实施院内外联动母乳喂养与产褥期照护支持,了解母婴产褥期健康问题,总结入户访视经验,为完善产褥期健康管理提供依据。方法由医院指导团队对社区入户指导团队4名成员进行培训和一对一对接指导,协助制订入户照护方案,由入户指导团队对102名存在母乳喂养问题的产妇行入户访视服务,包括母乳喂养与产褥期照护支持。结果共完成118人次入户访视服务。最常见的产妇问题为哺乳姿势问题,占73.7%;最常见的婴儿问题为喂养遇到的难题,占65.2%。产妇对访视服务的满意度为100%,未发生事故和投诉。结论院内外团队协作入户对产妇行母乳喂养与产褥期照护支持,能帮助产妇解决母乳喂养遇到的问题,提高产妇满意度。在实施前应构建访视团队以及相应的指导团队,加强入户指导质量把控,提高院内外联动性、对指导者进行一对一指导以提高服务质量。  相似文献   
3.
哺乳期化脓性乳腺炎多见于产后哺乳的妇女,以初产妇为多。胡新春[1]认为其发病原因为初产妇缺乏哺乳经验,易致乳汁淤积,乳头皲裂、乳头畸形、喂养含接不当、婴幼儿舌系带短、乳房外伤、哺乳期妇女的压力和疲劳等因素均可导致乳汁淤积。王颀等[2]认为急性乳腺炎初产妇占90%,感染途径是沿着输乳管先至乳汁淤积处,引起实质性乳腺炎或间质性乳腺炎[3]。已有脓肿形成者应及时切口引流或粗针穿刺抽脓,但3%~5%的病人并发乳漏,术后需长期换药,疼痛明显不仅给病人带来心理和身体的伤害,降低产妇继续哺乳信心,同时也不利于婴儿的生长发育。我院甲乳外科收治1例哺乳期化脓性乳腺炎伴乳漏病人,通过抗感染、伤口湿性愈合干预、超声波抗生素导入,硫酸镁和芒硝外敷等干预措施,患乳成功退奶促进乳漏伤口愈合,健乳继续保持母乳喂养。现报告如下。  相似文献   
4.
5.
In 2012, the Baby‐friendly Hospital Initiative for Neonatal Wards (Neo‐BFHI) began providing recommendations to improve breastfeeding support for preterm and ill infants. This cross‐sectional survey aimed to measure compliance on a global level with the Neo‐BFHI's expanded Ten Steps to successful breastfeeding and three Guiding Principles in neonatal wards. In 2017, the Neo‐BFHI Self‐Assessment questionnaire was used in 15 languages to collect data from neonatal wards of all levels of care. Answers were summarized into compliance scores ranging from 0 to 100 at the ward, country, and international levels. A total of 917 neonatal wards from 36 low‐, middle‐, and high‐income countries from all continents participated. The median international overall score was 77, and median country overall scores ranged from 52 to 91. Guiding Principle 1 (respect for mothers), Step 5 (breastfeeding initiation and support), and Step 6 (human milk use) had the highest scores, 100, 88, and 88, respectively. Step 3 (antenatal information) and Step 7 (rooming‐in) had the lowest scores, 63 and 67, respectively. High‐income countries had significantly higher scores for Guiding Principles 2 (family‐centered care), Step 4 (skin‐to‐skin contact), and Step 5. Neonatal wards in hospitals ever‐designated Baby‐friendly had significantly higher scores than those never designated. Sixty percent of managers stated they would like to obtain Neo‐BFHI designation. Currently, Neo‐BFHI recommendations are partly implemented in many countries. The high number of participating wards indicates international readiness to expand Baby‐friendly standards to neonatal settings. Hospitals and governments should increase their efforts to better support breastfeeding in neonatal wards.  相似文献   
6.
The global emergency caused by the novel coronavirus (COVID‐19) pandemic has impacted access to goods and services such as health care and social supports, but the impact on infant feeding remains unclear. Thus, the objective of this study was to explore how caregivers of infants under 6 months of age perceived changes to infant feeding and other food and health‐related matters during the COVID‐19 State of Emergency in Nova Scotia, Canada. Four weeks after the State of Emergency began, between 17 April and 15 May 2020, caregivers completed this online survey, including the Perceived Stress Scale. Participants (n = 335) were 99% female and mostly White (87%). Over half (60%) were breastfeeding, and 71% had a household income over CAD$60,000. Most participants (77%) received governmental parental benefits before the emergency, and 59% experienced no COVID‐19‐related economic changes. Over three quarters of participants (77%) scored moderate levels of perceived stress. Common themes of concern included social isolation, COVID‐19 infection (both caregiver and infant), and a lack of access to goods, namely, human milk substitutes (‘infant formula’), and services, including health care, lactation support, and social supports. Most COVID‐19‐related information was sought from the internet and social media, so for broad reach, future evidence‐based information should be shared via online platforms. Although participants were experiencing moderate self‐perceived stress and shared numerous concerns, very few COVID‐19‐related changes to infant feeding were reported, and there were few differences by socio‐economic status, likely due to a strong economic safety net in this Canadian setting.  相似文献   
7.
Prenatal breastfeeding intentions impact breastfeeding practices. Racial/ethnic disparities exist in breastfeeding rates; it is unknown if prenatal intentions and meeting intentions differ by race/ethnicity. A longitudinal cohort of USDA''s Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) which enrolled participants beginning in 2013 were used to estimate prenatal intentions for breastfeeding initiation, exclusive breast milk feeds at 1 and 3 months by race/ethnicity (n = 2070). Meeting intentions were determined by reported breast milk consumption at birth, 1 month and 3 months. Multivariable logistic regression was used to determine the association of race/ethnicity with meeting intentions. There were no differences in prenatal breastfeeding intentions between non‐Hispanic White and non‐Hispanic Black women (initiation: 86.9% and 87.2%; Month 1: 52.3% and 48.3%; Month 3: 43.8% and 40.9%; respectively), but a higher percentage of Hispanic women intended to breastfeed at all time points (95.5%, 68.3% and 56.4%; respectively, P < 0.05). Among women who intended to breastfeed at Month 1, non‐Hispanic Black and Hispanic women had significantly lower odds of meeting intentions compared with non‐Hispanic White women after adjusting for covariates (aORs: 0.63 [95% CI: 0.41, 0.98]; 0.64 [95% CI: 0.44, 0.92], respectively). Similar findings were seen for Month 3. Despite no differences in breastfeeding intentions, non‐Hispanic Black women were less likely to meet their breastfeeding intentions than non‐Hispanic White women. Hispanic women were more likely to intend to breastfeed yet were less likely to meet their intentions. This suggests that non‐Hispanic Black and Hispanic women face challenges to meeting their longer breastfeeding intentions. Understanding how racism, bias and discrimination contribute to women not meeting their breastfeeding intentions may help efforts to reduce breastfeeding disparities.  相似文献   
8.
This study compared the effect of telephone and social messaging application follow-up on mothers’ self-efficacy, perceived social support, and duration of exclusive breastfeeding. Participants were randomized into 3 groups. The control group received the breastfeeding education during hospitalization, and the 2 intervention groups received education sustained postdischarge follow-up via telephone or by a social messaging application. Both intervention groups had significant differences in breastfeeding self-efficacy, perceived social support, and the duration of EBF compared with the control group, but the intervention groups were similar in these regardes. The telephone and social messaging application follow-up both promote EBF duration.  相似文献   
9.
10.
目的 探讨母乳喂养对儿童口腔不良习惯的影响,为儿童口腔不良习惯的预防提供参考。方法 检索中国知网、维普、万方及Pubmed等数据库,收集2000-2020年之间关于母乳喂养和口腔不良习惯关系的中英文研究,应用Stata14.0软件对纳入文献进行Meta分析,计算合并OR值和95%可信区间(95%CI)。结果 最终纳入文献17篇,共计调查对象7 579例,来自8个国家。Meta分析结果显示:非纯母乳喂养是儿童用口呼吸(OR=0.498,95%CI:0.364~0.681)、非营养性吮吸(OR=0.327,95%CI:0.152~0.704)、使用安慰奶嘴(OR=0.362,95%CI:0.181~0.724)的保护因素;与混合母乳喂养≥6个月相比,混合母乳喂养<6个月是儿童用口呼吸(OR=1.596,95%CI:1.298~1.962)、非营养性吮吸(OR=2.939,95%CI:1.651~5.232)、使用安慰奶嘴(OR=4.378,95%CI:2.607~7.353)的危险因素。结论 母乳喂养可预防口腔不良习惯的发生,受纳入研究数量和质量的限制,该结论需要更多前瞻性研究予以支持。  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