<prompt> All the following operations are done for gastroesophageal reflux disease ExceptHellers cardiomyotomyBelsey operationNissen fundoplicationHill procedure  <response>: Antireflux surgery is the only effective long-term beneficial therapy. Laparoscopic fundoplication most popular, Collis - Nissen veical gastroplasty and fundoplication, resection of OG junction when metaplasia is present, Belsey Mark 4 operation technically difficult are the procedures used now. Total Nissens or paial Toupet fundoplication wherein after narrowing the crus of the diaphragm, mobilised fundus is wrapped around the area of O-G junction either totally or paially. Hills operation--Fixing O-G junction posteriorly to preaoic fascia--to an arcuate ligament. Boerema operation--Fixing O-G junction anteriorly to the abdominal wall. The Belsey-mark-4 operation is plication of the oesophagus to the diaphragm through many sutures and so as to push the lower end of oesophagus downwards and make it intra-abdominal--thoracic approach. Ref: SRB;s manual of surgery,3 rd ed, pg no 724 