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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.
In some cases, persistent hiccups are caused by an underlying disease. Over 100 diseases have been reported to cause hiccups. Some are common, such as acid reflux and some are rare. You would normally have other symptoms apart from the hiccups. In some cases of persistent hiccups there is no apparent cause.