Comparison of Laparoscopic Nissen Fundoplication and Hill-Snow Repair for Hiatus Hernia With Endoscopic Evaluation: Randomized Controlled Trial

Congenital hiatus hernia (CHH), though less common than acquired forms, presents a significant clinical challenge, particularly in the pediatric and young adult populations. It is characterized by a congenital defect in the phrenoesophageal membrane, allowing for herniation of gastric cardia into the mediastinum. This anatomical disruption compromises the lower esophageal sphincter (LES) mechanism, leading to severe gastroesophageal reflux disease (GERD), which can result in failure to thrive, esophagitis, recurrent aspiration pneumonia, and long-term sequelae like Barrett's esophagus.

When medical management fails or in cases of significant complications, surgical intervention is imperative. The goals of surgery are the anatomical reduction of the hernia, reconstruction of the esophagogastric junction (EGJ), and restoration of an effective anti-reflux barrier. Laparoscopic repair has become the gold standard due to its benefits of reduced postoperative pain, shorter hospital stay, and better cosmesis.

Two prominent laparoscopic techniques are:

Laparoscopic Nissen Fundoplication (LNF): A 360-degree wrap is the most common anti-reflux procedure worldwide. It is highly effective in controlling reflux but is associated with potential side effects like gas-bloat syndrome, dysphagia, and inability to belch.

Laparoscopic Hill-Snow Repair (LHS): This technique focuses on a precise anatomical restoration of the EGJ by anchoring it to the median arcuate ligament of the diaphragm. It aims to recreate the valvular mechanism without a complete wrap, potentially reducing the typical side effects of Nissen fundoplication.

Endoscopy plays a crucial but often under-standardized role in the perioperative management of CHH.

Preoperatively, it is essential for diagnosing esophagitis, Barrett's metaplasia, and ruling out other pathologies. It also helps in assessing the size and reducibility of the hernia.

Intraoperatively, endoscopy (laparoscopic-endoscopic collaboration) can guide the surgeon in assessing the tightness of the fundoplication, identifying the Z-line for accurate placement of the wrap, and ensuring no mucosal perforation has occurred.

Postoperatively, endoscopy is the primary tool for evaluating anatomical success, detecting recurrence, and managing persistent symptoms like dysphagia.

While numerous studies have compared various fundoplication techniques for GERD, there is a paucity of literature directly comparing LNF and LHS specifically in the context of congenital hiatus hernia. Furthermore, a systematic protocol defining the integral role of endoscopy in all three perioperative stages is lacking. This study aims to fill this gap by providing a comparative analysis of the functional outcomes and complications of these two techniques and by establishing a standardized perioperative endoscopic protocol.