Hi Capitol
This is a very good point. As preliminary answer, I would say it depends of the type of Medical Application you are looking for ( Portable Medical; Diagnostic and Therapy; Imaging). However, the best way to safe time would be to start by a reference design. On Freescale site (http://freescale.com/medical) which is a provider of high quality technical solutions that enable the development of breakthrough medical system, you can find an Activity Monitor Reference Design. I think this is for you a good starting point to assess/evaluate performance you need for your own Medical Application you are looking for developing.
Last point but not the least, I would encourage you to attend the Medical webinar organized by Freescale the 25th of October at the following URL (http://www.element14.com/community/events/3102)
Regards
Laurent Vassort
TI also has a wealth of Medical applications guides you can find here: http://focus.ti.com/general/docs/gencontent.tsp?contentId=70677
TI also has a wealth of Medical applications guides you can find here: http://focus.ti.com/general/docs/gencontent.tsp?contentId=70677