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   157篇
  免费   3篇
儿科学   4篇
妇产科学   31篇
基础医学   10篇
口腔科学   2篇
临床医学   10篇
内科学   17篇
皮肤病学   3篇
神经病学   8篇
特种医学   2篇
外科学   15篇
综合类   15篇
预防医学   22篇
眼科学   1篇
药学   11篇
中国医学   6篇
肿瘤学   3篇
  2023年   1篇
  2022年   7篇
  2021年   10篇
  2020年   3篇
  2019年   6篇
  2018年   5篇
  2017年   3篇
  2016年   3篇
  2015年   6篇
  2014年   11篇
  2013年   16篇
  2012年   11篇
  2011年   14篇
  2010年   4篇
  2009年   3篇
  2008年   8篇
  2007年   8篇
  2006年   12篇
  2005年   10篇
  2004年   4篇
  2003年   6篇
  2002年   4篇
  1992年   1篇
  1991年   2篇
  1990年   1篇
  1982年   1篇
排序方式: 共有160条查询结果,搜索用时 0 毫秒
1.
2.
Nigeria faces challenges that delay progress toward the attainment of the national government''s declared goal of universal health coverage (UHC). One such challenge is system-wide inequities resulting from lack of financial protection for the health care needs of the vast majority of Nigerians. Only a small proportion of Nigerians have prepaid health care. In this paper, we draw on existing evidence to suggest steps toward reforming health care financing in Nigeria to achieve UHC through social health insurance. This article sets out to demonstrate that a viable path to UHC through expanding social health insurance exists in Nigeria. We argue that encouraging the states which are semi-autonomous federating units to setup and manage their own insurance schemes presents a unique opportunity for rapidly scaling up prepaid coverage for Nigerians. We show that Nigeria''s federal structure which prescribes a sharing of responsibilities for health care among the three tiers of government presents serious challenges for significantly extending social insurance to uncovered groups. We recommend that rather than allowing this governance structure to impair progress toward UHC, it should be leveraged to accelerate the process by supporting the states to establish and manage their own insurance funds while encouraging integration with the National Health Insurance Scheme.  相似文献   
3.
Advances in surgery, anesthesia and intensive care have led to a dramatic increase in the number of patients who spend time in our intensive care units (ICU). Gastrointestinal (GI) motility disorders are common complications in the intensive care setting and are predictors of increased mortality and length of the stay in the ICU. Several risk factors for developing GI motility problems in the ICU setting have been identified and include sepsis, being on mechanical ventilation and the use of vasopressors, opioids or anticholinergic medications. Our focus is on the most common clinical manifestations of GI motor dysfunction in the ICU patient: gastroesophageal reflux, gastroparesis, ileus and acute pseudo‐obstruction of the colon.  相似文献   
4.

Objectives:

To assess the effectiveness of appendectomy in women undergoing laparoscopy for chronic pelvic pain without identifiable pathology.

Methods:

This retrospective cohort study included women aged 15 to 50 years who underwent laparoscopic surgery for chronic pelvic pain without identifiable pathology. The cohort was divided into 2 groups: women who underwent appendectomy and women who had not undergone appendectomy at laparoscopic surgery. Postoperative pain was assessed at 6-week follow-up and by subsequent mailed questionnaire.

Results:

Women who underwent appendectomy (n = 19) were significantly more likely to report improvement in pain at 6-week follow-up than women who did not undergo appendectomy (n = 76) (93% vs 16%; P < .001). Thirty-six patients (38%) responded to the questionnaire at a median of 4.2 years after surgery, when the median change (improvement) in reported pain was greater in the appendectomy group than in the nonappendectomy group.

Conclusion:

Appendectomy is effective therapy for patients with chronic pelvic pain of unknown etiology who are undergoing laparoscopy.  相似文献   
5.
OBJECTIVE: To determine if intrapartum electronic fetal heart rate monitoring (EFM) can identify the fetal in utero systemic inflammatory response or neonatal sepsis, risk factors for the development of brain injury. STUDY DESIGN: This case-control study matched cases with both histologic chorioamnionitis and funisitis (75 preterm and 63 term) to the next delivery without placental or cord inflammation by gestational age and mode of L delivery. The last 2 hours of EFM prior to delivery were reviewed by 3 perinatologists blinded to placental pathology. RESULTS: Preterm and term cases had significantly increased baseline heart rates. Term cases had significant increases in tachycardia, total and late decelerations, and nonreactivity and also had fewer accelerations. EFM parameters had sensitivity of 29-65%, specificity of 46-93%, positive predictive value of 53-80% and negative predictive value of 54-58% in identifying fetal systemic inflammation in this matched, case-control sample. Of the preterm neonates, 9 with sepsis were compared to 141 with negative cultures and were found to have a significant increase in baseline fetal heart rate and tachycardia of longer duration. CONCLUSION: Although significant associations were found, EFM lacks precision in identifying the fetal in utero systemic inflammatory response and neonatal sepsis, predisposing conditions for the development of neonatal encephalopathy.  相似文献   
6.
7.
Hepatitis C virus genotypes have been associated with specific geographical areas and in many cases with specific mode of transmission. In developed countries, genotype determination has formed a part of the management of patients with hepatitis C virus seropositivity and liver diseases due to hepatitis C virus. The epidemiology of hepatitis C virus has been shown to be changing rapidly in many countries due to population movement and different life-styles; hence the distribution of the genotypes is being monitored closely in many countries. In the Kingdom of Saudi Arabia, there are only a handful of publications recording the hepatitis C virus genotypes in various population groups. These studies have been carried out mainly in Riyadh (Central province) and Jeddah (Western province). There are no studies emanating from the Eastern or Northern provinces. According to these studies, the most prevalent genotype in the Western Province and probably in the whole Kingdom of Saudi Arabia was genotype 4, followed by genotypes 1a and 1b. Genotypes 1, 2a,/2b, 3 and 6 are very rare in the Kingdom of Saudi Arabia. Genotype 5 was identified exclusively in the Western province and nowhere else. Genotypes 1b and 4 were associated with different histological grades of liver disease. Mixed infections with more than one genotype were observed in some studies. More detailed epidemiological studies of hepatitis C virus infections are needed in the Kingdom of Saudi Arabia to gain more insight into a possible type/subtype-specific pathogenesis of hepatitis C virus in the different regions of the Kingdom of Saudi Arabia as well as the distribution of the genotypes in the various localities.  相似文献   
8.
The first international outbreak of Neisseria meningitidis serogroup W135 occurred in 2000, in direct association with the annual Hajj in Saudi Arabia. In anticipation of the following Hajj, we conducted a survey of oropharyngeal carriage rates of N. meningitidis both pre- and post-pilgrimage in the King Khalid National Guard Hospital (KKNGH) employees preparing to attend the Hajj. These KKNGH employees were native to the Mecca-Jeddah area. Pre-Hajj throat cultures were obtained 1 week prior to Hajj, and post-Hajj cultures within 10 days after completing the Hajj pilgrimage. A total of 327 throat culture samples were collected from 218 persons. Overall meningococcal carriage rate was found to be 4.7%. Serogroup W135 accounted for 40% of all recovered pre-Hajj strains of N. meningitidis. Only one post-Hajj sample was positive for N. meningitidis W135. This high rate of colonization with N. meningitidis serogroup W135 indicates this strain predominates amongst the population indigenous to the Mecca-Jeddah area. This 'nidus' of N. meningitidis W135 is a potential reservoir for future outbreaks. More worrying, there is real risk of future W135 endemicity in this vulnerable local population. These preliminary findings warrant larger surveillance studies examining both transmission and carrier rate acquisition of N. meningitidis in the Mecca-Jeddah area. These vital data are needed to curb further epidemic outbreaks during future Hajj pilgrimages.  相似文献   
9.
10.
The use of topiramate therapy to control the neuropsychiatric and behavioral disturbances in individuals with mental and/or developmental disabilities with co-occurring psychiatric disturbances has become a standard of practice in many long-term care assisted living facilities. With increased utilization of this anticonvulsant, there has been a rise in the number documented cases of agitation and/or aggressive behavior associated with topiramate therapy. It is the purpose of this article to explore the current literature documenting the connection between topiramate utilization and the development of aggressive and/or agitated behavior.  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