When the vagus nerve which is attached to the brain stem and stomach is squeezed hard enough by straining to potty, it may send a person into cardiac distress with a much slowed heart rate, sweating, nausia and vomiting. This happens mostly with the elderly, thus the reason it is refered to as "commode code".
by Jennings Ford March 26, 2006
We responded to a heart attack yesterday, but upon arrival we called the coroner for a commode code.
by OceanSpawned July 25, 2005