Common Causes of Sudden Death in Horses

reactions to a drug given to a horse can be rapid and difficult to treat. If treatment starts very soon after a reaction is noticed there may be a good chance for recovery. Despite this a severe reaction can lead to death very quickly due to anaphylactic shock 3 Fortunately this type of extreme reaction is rarely seen in horses on the farm.
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Gastrointestinal Ruptures
Distention and rupture in your horses stomach or intestines can cause acute death. The first indication of a severe gastrointestinal problem is colic symptoms. Dehydration and impaction severe parasite load a twisting or telescoping of the intestine and other blockages can cause the intestine or stomach to rupture 4 Although sometimes these symptoms occur over a period of a day or so some gut issues may occur quickly resulting in acute signs that lead to sudden death.
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Congenital Defects
Horses can be born with congenital defects that can lead to sudden death. There may be no outward sign that anything is wrong in the foal. Depending on what the congenital defect is the horse may survive until adulthood but suddenly die. Some cardiac defects manifest clinically this way.
If Your Horse Suddenly Dies
Necropsy autopsy on an animal may reveal the cause of death this requires the expertise of a veterinarian. Providing the best care possible for your horse is the best way to help your horse live a long and comfortable life.