The Long-term Medical Holographic program (or LMH, for short) was an attempt by Dr. Lewis Zimmerman to extend the usability of his previous work, the Emergency Medical Holographic program, for use on isolated bases and outposts where resources may be limited as a fully-fledged medical officer. Zimmerman began this project after receiving a request from Starfleet to enhance the lifespan of the EMH in mid-2373.
In designing the LMH, Zimmerman concluded that it would be necessary for the holo-doctor to interact naturally with patients for weeks at a time. In doing so, he felt it necessary for the holo-doctor to be "expected to share amusing anecdotes, extend sympathy, swap dirty jokes, and even have culinary opinions formed by experience."
To futher enhance the LMH program, Zimmerman intended to conduct in-depth interviews with Bashir's family, friends, and colleagues in order to build a more rounded pyschological profile.
- It is not clear if Zimmerman continued work on the LMH afterwards or not, though with the advances made by the Doctor's programming, it is likely that future EMH's were given a much longer life span.