Synapse EMR is being ported to Linux. Alpha builds are now available to play with (Libc6). Synapse EMR is a GUI rich free EMR on Win32.
See here
Lots of things not working yet, but the basic GUI comes up. Still to work on printing, print preview etc. Only 50% thru reading Linux for Dummies so once I finish that I’ll have more ideas on how to complete this project!