The application present multiple-choice questions, and for each question a concise answer is given. It is highly practical, short and to the point. Another characteristic of the application is that it shifts the focus from theory to clinical applications, reflecting the growing trend to change critical appraisals into clinical action. The examples feature real case histories, providing the opportunity to simulate actual practice, where multiple problems are presented, decisions need to be taken, and the required monitoring of the patient may be influenced by the occurrence of concurrent disease states.