GER increases if –
**Core Concept**
Gastroesophageal reflux (GER) is the retrograde flow of gastric contents into the esophagus, causing symptoms like heartburn and regurgitation. This phenomenon is influenced by factors that affect esophageal clearance, gastric pressure, and lower esophageal sphincter (LES) function.
**Why the Correct Answer is Right**
The correct answer is related to the relaxation of the lower esophageal sphincter (LES) pressure, which allows gastric contents to reflux into the esophagus. The LES is a ring-like muscle that separates the esophagus and stomach, and its relaxation can be caused by various factors, including food intake, obesity, and hormonal changes. When the LES pressure is reduced, it facilitates the passage of gastric contents into the esophagus, leading to GER.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to GER, as it does not directly affect LES pressure or esophageal clearance.
**Option B:** While stress can exacerbate GER symptoms, it is not a direct cause of increased GER.
**Option C:** This option is incorrect, as increased LES pressure would actually reduce GER, not increase it.
**Clinical Pearl / High-Yield Fact**
A key factor in the pathogenesis of GER is the transient relaxation of the LES, which can be triggered by various stimuli, including food intake, stress, and obesity.
**Correct Answer:** C.