Continuous integration is a software development principle where multiple developers integrate their changes daily. These integrations are closely monitored by a continuous integration server which builds and tests the changes upon every integration. The software projects adopting this methodology greatly increase the speed of development and the speed of identifying problems introduced by integrations. In this paper we present the continuous integration convention adopted with success in the development of WEB based software for cardiology departments. The specifics of the usage of CI in medical domain software applications are considered and analyzed.