Patients need to be monitored for lack of blood flow to the cardiovascular system. (dog-health-guide.org)
This is a high risk situation if the dog is in shock, and may require removal of part of the stomach if a section of stomach dies due to lack of blood supply. (www2.vet.cornell.edu)
When the heart muscle dies from lack of blood, it is replaced by scar tissue, since the heart has very little regenerative capacity. (closerlookatstemcells.org)