title: Internet and cardiovascular research: the present and its future potentials and limits.
abstract: The Internet and the World Wide Web have been proposed as tools to improve medical and cardiovascular research. These new technologies have been mainly applied to large-scale clinical trials, with the development of clinical-trial websites. They include tools for the management of some aspects of clinical trials, such as the dissemination of information on trial progress; randomisation and the monitoring processes; the distribution and accountability of study drugs; and remote data-entry. Several clinical-trial websites have been developed in the cardiovascular field over the last few years, but few have been designed to conduct trials fully online. Advantages of such systems include greater interaction between the coordinating centre and investigators, availability of a clean database in a short time, and cost reduction. Website developers need to take care of security issues and to use security tools (data encryption, firewalls, passwords and electronic signatures) in order to prevent unauthorised users from accessing the system and patient data.