A hiatal hernia that is in danger of becoming constricted or strangulated may require surgical treatment, according to WebMD. Hernia surgery is performed to reduce the hernia, or move it back into place to avoid cutting off blood supply.
A hiatal hernia is a hernia that occurs in the tissue of the diaphragm, states WebMD. Hiatal hernias come in two different forms: sliding and paraesophageal. When an individual gets a sliding hiatal hernia, the most common form of hiatal hernia, the stomach and part of the esophagus slide up the chest cavity and poke through the muscle of the hiatus, an opening in the diaphragm. In a paraesophageal hernia, the esophagus does not move, but part of the stomach shifts up and through the hiatus.