Chatburn Robert L
Respiratory Institute, M-56, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
Respir Care. 2009 Oct;54(10):1360-5.
The Internet has made finding evidence for clinical practice fairly easy. Many different types of databases that can be searched for relevant key terms are available for free or for subscription. Bibliographic or library databases contain books, book chapters, reports, citations, abstracts, and either the full text of the articles indexed or links to the full text. Citation databases are specially designed so that you can track the progress of an idea or research topic by searching the published works that cite a particular author or article. Synthesized databases are pre-filtered records for particular topics. They are usually subscription-based, with relatively large fees (but you can get free access in libraries). This type of database may provide the "best" evidence without extensive searches of standard bibliographic databases. Portals are Web pages that act as a starting point for using the Web or Web-based services and links to books, journals, patient-education resources, and images. Many medical journals, including Respiratory Care, are now available online. Finally, even generalized search engines such as Google, Yahoo, Ask, and Dogpile can provide a wealth of information on medical topics.
互联网已使为临床实践寻找证据变得相当容易。有许多不同类型的数据库可供免费搜索或付费订阅，可通过搜索相关关键词来获取这些数据库。书目数据库或图书馆数据库包含书籍、章节、报告、引用文献、摘要，以及索引文章的全文或全文链接。引文数据库经过专门设计，这样你可以通过搜索引用特定作者或文章的已发表作品来追踪某个观点或研究主题的进展。综合数据库是针对特定主题预先筛选的记录。它们通常需要付费订阅，费用相对较高（但在图书馆可免费使用）。这类数据库无需广泛搜索标准书目数据库就能提供“最佳”证据。门户网站是用作使用网络或基于网络的服务的起点的网页，以及书籍、期刊、患者教育资源和图像的链接。包括《呼吸护理》在内的许多医学期刊现在都可在线获取。最后，即使是像谷歌、雅虎、Ask和Dogpile这样的通用搜索引擎也能提供大量关于医学主题的信息。
