The hollow organs, vascular structures and genito-urinary (GU) tract can also be injured and will each display their own characteristic responses to injury.
Fig 1 Onset of peritonitis
Hollow viscus
Peritoneal contamination with bowel contents will produce peritonism.
There may be accompanying blood loss but the degree of hypovolaemia is generally less significant than in solid organ injury.
Damage to the retroperitoneal portion of the bowel will not produce classical signs of peritonism as the leak will be contained.
Vascular structures
Catastrophic blood loss may occur with injury to any of the large vessels in the abdomen.
Aortic injury is usually fatal, but may be tamponaded if it occurs retroperitoneally.
Injury to the inferior vena cava is likely to be associated with more insidious blood loss unless there is a large tear.
GU tract
Bruising, haematuria or meatal blood are often the only signs of a GU injury.
Injury to the intraperitoneal portion of the bladder may result in chemical peritonitis.