Traumatic haemoabdomen in the dog: when to operate?
4-year-old Greyhound hit by a car with haemoabdomen confirmed by abdominocentesis. After initial resuscitation he is stable, but the question is when surgery would be indicated.
Which situation most clearly indicates laparotomy?
chevron_right Show answer and explanation
A. The presence of free blood in the abdomen, even if the patient responds to resuscitation
Most traumatic haemoabdomens in dogs resolve with medical management. Operating on a stable patient adds risk without clear benefit.
B. Persistent or recurrent haemodynamic instability despite adequate resuscitation with fluids and blood products
Correct. If the patient does not stabilise or relapses despite fluids, blood products and a counter-pressure bandage, the bleeding is active and uncontrolled: surgery is required. Suspected hollow viscus rupture or peritonitis also indicate surgery.
C. An abdominal fluid PCV similar to that of peripheral blood
A similar PCV confirms haemorrhage but does not distinguish between bleeding that has stopped and active bleeding.
D. A slight fall in peripheral PCV in the first hours
This is expected due to haemodilution with fluids and reabsorption of interstitial fluid. It must be assessed together with perfusion and the trend, not in isolation.
lightbulb Key takeaway
In traumatic haemoabdomen, the decision to operate depends on response to resuscitation, not on the amount of blood. Monitor perfusion, blood pressure, PCV and FAST serially; persistent bleeding or contamination indicate surgery.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.