[Gnumed-devel] Medication creation requirements

[Jim Busser]

Just some things I have been thinking about....

- doctors need not always provide (or even know) the possible  
proprietary (brand or Handel) names of medications and therefore when  
inputting a medication name it must be possible to create a substance  
name while leaving blank (null) the Handelname

- when selecting a substance name it is possible that the doctor may  
know the Handelname when the substance is either uniquely available  
only under a single Handelname or because the doctor is specifying the  
desired Handelname or because we might not here be talking about a  
prescription but may instead be talking about documenting a known  
substance already being taken by this patient who is providing both  
the substance and the Handelname information

- this means that when selecting a substance name it should be  
possible for the doctor to

        - be given a list of matches for a substance name
	- and for each substance name, to be offered multiple matching  
Handelnames where these do already exist in the backend
	- where a combination of a substance name with a Handelname is  
desired, select it
	- be able to accept a substance name without having to accept a  
Handelname
	- when a substance name already existed but a suitable matching  
Handelname did not, add the Handelname

	- when a substance is one of multiple substances within a Handelname  
that is to be created, be provided some way to enter / associate the  
other components with this Handelname

I am further wondering:

- when the substance is matched, it is returned with a set of  
strengths known to exist for that substance and does the user then get  
to select whichever is the best line from among multiple lines each of  
which offers a different combination of substance with strength?

- will the user also select from among existing "plans" like 1-0-0-0  
where keyboard input of 1 will filter out 0 and 2 and further keyboard  
input of -0 will filter the choices to the matching

        1-0-0-0
        1-0-1-0
        1-0-0-0
        1-0-0-1
        1-0-1-1

and any other additional matches from what might exist in the backend?

- should the user be provided two different fields, one for substance  
and another for Handelname and will the choice determine the widget  
behaviour or will the field serve as a combo box (like the name field  
in which one can put in a name or other identifier)?