E-Medicine - Clinical Patient Record Systems Architecture: An Overview

Creation of a general-purpose medical record is one of the more difficult problems in database design. In the USA, most medical institutions have much more electronic information on a patient's financial and insurance history than on the patient's medical record. Financial information, like orthodox accounting information, is far easier to computerize and maintain, because the information is fairly standardized. Clinical information, by contrast, is extremely diverse. Signal and image data-X-Rays, ECGs, -requires much storage space, and is more challenging to manage. Mainstream relational database engines developed the ability to handle image data less than a decade ago, and the mainframe-style engines that run many medical database systems have lagged technologically. One well-known system has been written in assembly language for an obsolescent class of mainframes that IBM sells only to hospitals that have elected to purchase this system.