Get Both Id And Description From Single-Line Dropdownlist

Hi

I have a 'single line' dropdownlist wich obtains its $data (id and description) from my db.

The dropdownlist is 'independent' and thus does not store the selected id in a model.

I use ajax to send the selected id (obtained with 'js:this.value') to my controller.

My question is:
How can I also send the description to my controller.
Currently, in the controller, I have to use the received id to read the database again - just to get the description. But it should be possible to send both the id and description to the controller at the same time.