The computer program continuously takes in data from a glucose monitor inserted into a patient's vein and calculates the dose of artificial insulin that needs to be infused through an insulin pump.
VOA: standard.2010.04.15
It takes three hours on a PC to run a patient's data through this simulation.
The doctors go online and get the patient's data (medical history, drug allergies, etc), which happens to be stored on the computer of a clinic on the other side of the world.