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Quick Answer. Hiccups resulting from surgery may be caused by a reaction to anesthesia or happen as a result of abdominal surgery or medical procedures such as a tracheotomy, states Healthline. Using a catheter to access the heart, bronchoscopy or using a stent in the esophagus can also result in long-term hiccups.
1 Hiccups may occur because of a nerve irritation of the diaphragm. 2  The rapid absorption of food when the dog eats fast may lead to the occurrence of hiccup. 3  A diet that contains a small quantity of liquid food may leaf to hiccups.  Overeating is also considered a cause.