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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 due to the involuntary contraction of the diaphragm muscle. This causes you to inhale suddenly, followed by a reflex shutting of the epiglottis, which makes the hic sound. Hiccups are stopped by stimulating the vagus nerve to the diaphragm, such as by drinking water upside down.