Occasionally, the Otolaryngologist needs to accede quickly to medical information in order to retrieve data or to solve doubts. In this way, it seems to be of interest to design a clinical guide that could be consulted as a PDA program (Pocket PC and Palm versions), in a personal computer or Internet.Clinical contents of protocols, guides, and articles, preferably based on the evidence and the clinical experience of 102 authors. Implementation of a program that allows the guide to be used in a PDA, to update it or to add notes using tools that could be downloaded from a web page.A clinical practice guide SEORL-PDA version 1.1, with thirteen ENT's topics, calculation algorithms, internal links and possibility of update the content and to add notes.SEORL-PDA is a clinical guide in PDA format, with enough information and possibilities. Its downloading and installation is easily done following the instructions of the web created with these purposes.