Evolution in the treatment of gastroesophageal reflux disease over the last century: from a crural-centered to a lower esophageal sphincter–centered approach and back
Bibliographic record
Abstract
The surgical management of gastroesophageal reflux disease (GERD) has evolved significantly over the past century, driven by increased understanding of the physiology of the reflux barrier, its anatomic components, and surgical innovation. Initially, emphasis was on reduction of hiatal hernias and crural closure as the etiology behind GERD was felt to be solely related to the anatomic alterations caused by hiatal hernias. With persistence of reflux-related changes in some patients despite crural closure, along with the development of what is now modern manometry and the discovery of a high-pressure zone at the distal esophagus, focus evolved to surgical augmentation of the lower esophageal sphincter (LES). With this transition to an LES-centric approach, attention shifted to reconstruction of the angle of His, ensuring sufficient intra-abdominal esophageal length, development of the now commonly employed Nissen fundoplication, and creation of devices that directly augment the LES such as magnetic sphincter augmentation. More recently, the role of crural closure in antireflux and hiatal hernia surgery has again received renewed attention due to the persistence of postoperative complications including wrap herniation and high rates of recurrences. Rather than simply preventing transthoracic herniation of the fundoplication as was originally thought, diaphragmatic crural closure has been documented to have a key role in re-establishing intra-abdominal esophageal length and contributing to the restoration of normal LES pressures. This progression from a crural-centric to a LES-centric approach and back has evolved along with our understanding of the reflux barrier and will continue to do so as more advances are made in the field. In this review, we will discuss the evolution of surgical techniques over the past century, highlighting key historical contributions that have shaped our management of GERD today.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.002 | 0.003 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.002 | 0.005 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".