Clinical Research Directory

GORE® ENFORM Biomaterial Product Study

A prospective, retrospective, non-randomized, multicenter study with two independent hernia study cohorts (Ventral / Incisional Hernia Repair and Diaphragmatic / Hiatal Hernia Repair). The primary objective of this study is to collect GORE® ENFORM Biomaterial product commercial-use data on device functional performance and short-term patient experience.

TLSA Versus TBSA Surgical Approach for Hiatal Hernia With Gastroesophageal Reflux Disease

Gastroesophageal reflux disease (GERD), characterized by pathological reflux of gastric contents, affects 10%-20% of the global population with Western predominance and escalating incidence over recent decades. Anatomical and functional abnormalities of the esophagogastric junction (EGJ) such as hiatal hernia (HH) is one of the major pathophysiological mechanisms. GERD elevates risks for Barrett esophagus, esophageal adenocarcinoma and interstitial pulmonary fibrosis, while characteristic symptoms including reflux and heartburn substantially impair quality of life (QoL). Proton pump inhibitors (PPIs) are used to alleviate symptoms and prevent reflux-related esophageal mucosal damage, but may cause long-term adverse effects. Anti-reflux surgery (ARS) is a well-established therapeutic option for patients with anatomical abnormalities, chronic PPI-refractory symptoms or unwilling to take lifelong PPIs. It provides comparable or potentially superior efficacy to PPIs, especially in reconstructing anatomical structures and addressing EGJ functional deficiencies. Maximize patients' QoL while minimizing side effects is priority for ARS. Despite advancements in surgical techniques, ARS remains invasive and is associated with inherent mechanical complications, including dysphagia and potential vagus nerve injury. A growing consensus recognizes that hepatic vagus nerve injury, occurring in a significant proportion of patients following ARS, potentially contributes to postoperative dysfunctions such as delayed gastric emptying, impaired reflux control, dyspeptic symptoms, cholelithiasis, ultimately diminishing QoL. Although the traditional bilateral surgical approach (TBSA) is widely used, its requisite dissection of the lesser omentum invariably injures or severs the hepatic branch of the vagus nerve. The hepatic branch of the vagus arises from the anterior trunk and predominantly innervates the gastric antrum, pylorus, proximal duodenum and biliary tract. Functionally, it mediates a spectrum of vital physiological process including hepato-gastric reflexes that facilitate gastric motility via osmotic sensing, as well as glucose-sensitive reflexes that inhibit gastric motility and delay gastric emptying. Furthermore, hepatic branch is involved in food intake and metabolic homeostasis, and it exerts parasympathetic control over the coordinated contraction of the gallbladder and sphincter of Oddi. However, the functional preservation of the hepatic branch of the vagus nerve during ARS remains poorly understood, with limited clinical evidence and absent robust guidelines. Based on our preliminary findings, we initiated a long-term evaluation of the total left-side approach (TLSA), a nerve-sparing strategy that preserves the lesser omentum and hepatogastric ligament to safeguard the hepatic branch of the vagus nerve, with the aim of enhancing postoperative QoL.

Low Pressure Pneumoperitoneum Using AirSeal® for Reduction in Postoperative Shoulder Pain Following Robot Assisted Hiatal Hernia Repair

The goal of this clinical trial is to evaluate the incidence and severity of post-operative shoulder pain following elective robot-assisted hiatal hernia repair in hopes of reducing pain and associated costs as well as clinic and emergency department visits due to this pain. You will undergo standard robot-assisted hiatal hernia repair with the standard postoperative care. The only difference is that you may be selected for the group where lower pressures used to fill your abdomen with carbon dioxide will be used, and you will be asked to fill out logs regarding your pain postoperatively. You will have postoperative appointments that are standard following this procedure.