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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.
Hiccups are caused by involuntary contractions of your diaphragm â the muscle that separates your chest from your abdomen and plays an important role in breathing. This involuntary contraction causes your vocal cords to close very briefly, which produces the characteristic sound of a hiccup.