A nurse is caring for a client who has recurring manifestations of gastroesophageal reflux disease (GERD). Which of the following statements should the nurse reinforce in the teaching plan?

Brief Introduction: Gastroesophageal reflux disease is a chronic condition where gastroduodenal contents reflux into the esophagus due to a compromised lower esophageal sphincter. This process is driven by increased intra-abdominal pressure or transient relaxations of the sphincter, leading to mucosal injury, pyrosis, and potential respiratory complications from micro-aspiration. Rationale: A. Increased adiposity, particularly in the umbilical region, significantly elevates intra-abdominal pressure. This mechanical stress overcomes the pressure of the sphincter, forcing gastric acid upward into the esophagus. Weight reduction is a primary non-pharmacological intervention to decrease the frequency of these reflux events. B. Recumbency immediately following a meal eliminates the benefits of gravitational forces in keeping gastric contents within the stomach. Staying upright for 2 to 3 hours postprandial ensures that the bolus remains below the gastroesophageal junction during the initial phases of digestion. This reduces the risk of nocturnal reflux. C. Methylxanthines, such as those found in caffeine and chocolate, induce smooth muscle relaxation of the lower esophageal sphincter. This decrease in sphincter tone facilitates the retrograde flow of acid, worsening the patient's symptoms. Patients are advised to avoid these substances to maintain a competent physiological barrier. D. Large meals cause significant gastric distention, which triggers transient relaxations of the esophageal sphincter and delays gastric emptying. Increased volume within the stomach puts excessive hydrostatic pressure on the cardiac notch, making reflux more likely. Consuming small, frequent meals is recommended to minimize gastric wall tension.