Chapter 46: Upper Gastrointestinal Problems

Oral health conditions receive detailed attention, including inflammatory disorders and the increasing incidence of oral and oropharyngeal malignancies associated with tobacco use, alcohol consumption, and human papillomavirus infection. The chapter extensively explores esophageal pathology, focusing on gastroesophageal reflux disease and hiatal hernia formation, while explaining how chronic acid exposure promotes metaplastic cellular transformation leading to Barrett's esophagus development. Peptic ulcer disease receives thorough examination, identifying Helicobacter pylori bacterial infection and nonsteroidal anti-inflammatory drug usage as primary causative factors, with emphasis on recognizing and managing life-threatening complications including perforation and gastric outlet obstruction. Surgical management of gastric malignancies is addressed through discussion of Billroth procedures and total gastrectomy techniques, alongside their associated long-term complications such as dumping syndrome, malabsorption disorders, and pernicious anemia development. The chapter concludes with emergency management protocols for acute upper gastrointestinal bleeding events and comprehensive review of foodborne illness prevention and treatment strategies, integrating acute care interventions with long-term patient education and community health considerations to optimize patient outcomes across diverse clinical settings.