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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.
A number of diseases may cause hiccups that can occur at any time of the day, including during sleep. Hiccups may occur with many brain disorders, including strokes, brain tumors, multiple sclerosis, Parkinson disease or brain injuries.