As ed34, I do not have experience in Colombia (I am in Spain), but Medtronic people should be able to tell you what facilities have Medtronic interrogation devices in Bogota.
As per the Flecaidine, do not take chances, carry it with you.
Be aware of the high altitude of Bogota, your blood will be less oxygenated and you might suffer ischemic symptoms.
Jesus
I think this is their home page with contact number on top right
http://www.husi.org.co/default.aspx
Im in the uk so not much help but a simple google brought up this info
http://co.linkedin.com/in/juanrcorrea
Looks like they are geared up for cardiac problems.