Gastroesophageal reflux disease (GERD) is known to present with various extraesophageal symptoms and complications. In contrast, several diseases affecting the motility of the esophagus and some approaches that alter the upper gastrointestinal tract anatomy may result in GERD. Certain diseases and conditions often mentioned with GERD will be briefly discussed in this section.
Systemic SclerosisEsophageal motility is impaired in 70-90% of patients with systemic sclerosis (1-3). On histological examination, smooth muscle atrophy and fibrosis causing motor activity abnormalities in two-thirds of the distal esophagus are often determined (4). Motility studies have shown that the amplitude of peristaltic contractions decreases or that there is no peristaltic contraction in this region (5-7). Abnormal peristalsis and decreased lower esophageal sphincter (LES) pressure reduce acid clearance and prolong the contact of acid with the mucosa (8). As a result, GERD develops in patients with scleroderma. In many cross-sectional studies using different methodologies, the prevalence of GERD has been reported to be at rates of up to 70% (9-15).
Diabetes MellitusFurthermore, various factors showing tendency to GERD were identified in diabetes mellitus. Among these,• Reduced salivary secretion associated with diabetic neuropathy, • Delayed gastric emptying, • Decreased acid clearance due to reduced motor activity of the esophagus/stomach related motor/autonomic neuropathy, • Increased sensory thresholds associated with sensory nerve damage of the esophagus, • Acid regurgitation caused by the increased frequency of transient LES relaxations related to neuropathy,
CholecystectomyThe reservoir function of the gallbladder disappears after cholecystectomy, and bile flow becomes continuous (20,21). Qualitative changes may appear at the levels of gastrointestinal hormones (22,23). Consequently, alterations in the qualitative bile content and more frequent transient LES relaxation may occur (24). Moreover, it was thought that reflux symptoms in these patients worsen with increased biliary symptoms after cholecystectomy due to a high-fat diet intake and weight gain. Alterations in the motility of the upper gastrointestinal tract and delayed stomach emptying caused by duodenal adhesions may also contribute to GERD (25). There was no significant increase in reflux after cholecystectomy in the limited number of studies based on these data. Uyanıkoğlu et al. (26) used the impedance method and reported increased reflux after surgery and that the pH was <4% higher than that before surgery; however, it was similar to the control group. In another study, Lin et al. (27) compared patients with hernia surgery and cholecystectomy. Reduction in the reflux symptom score was 35% in patients, while it was 39% in controls (p=0.11).
Sleeve GastrectomyMechanisms that may induce increased GERD in patients with GERD with sleeve gastrectomy include hypotensive LES (28), blunting of the angle of His (29), decreased gastric compliance (30), delayed gastric em...