brother in law in car accident, has not had a bm since the day of the accident --three days ago and started to throw up a tar like substance today after a breathing treatment.  All ivs and liquid diet have been reestablished. what could be the possibe causes for this tar.
HiT his tarry black colored stools are due to internal bleeding, In his case which can be due to the blunt trauma to the abdomen. It should be evaluated by the surgeon or the gastroenterologist with an ultrasound abdomen pelvis or ct abdomen to rule out for the possible site of the bleedingTake care