Quiz: Gastroesophageal Reflux Disease — 26 questions

1. What best defines gastroesophageal reflux?

A. Forceful expulsion of gastric contents through the mouth during nausea

B. Movement of esophageal contents into the stomach during swallowing

C. Return of bile from the intestine into the stomach after meals

D. Involuntary passage of gastric contents into the esophagus without vomiting effort

Answer: (D)

Explanation

Gastroesophageal reflux is the involuntary movement of gastric contents through the cardia into the esophagus without vomiting effort. It is not automatically pathological unless symptoms or mucosal lesions are present.

2. When does physiological gastroesophageal reflux become pathological?

A. When reflux is associated with symptoms or esophageal mucosal lesions

B. When gastric contents briefly enter the esophagus during digestion

C. When reflux occurs after a meal in a person without discomfort

D. When reflux is detected by monitoring without symptoms or tissue injury

Answer: (A)

Explanation

Reflux becomes pathological when it produces symptoms and/or esophageal mucosal lesions. Postprandial reflux without these features is generally physiological rather than pathological.

3. Which combination represents established approaches to diagnosing and treating gastroesophageal reflux?

A. Endoscopy or pH-based monitoring, with acid suppression and lifestyle measures

B. Liver biopsy, with bile-binding drugs and complete fasting

C. Colonoscopy or stool testing, with laxatives and fluid restriction

D. Abdominal radiography, with antibiotics and strict bed rest

Answer: (A)

Explanation

Clinical assessment, endoscopy, pH monitoring, and pH-impedance monitoring can support diagnosis, while proton-pump inhibitors, H2 antagonists, alginates, and lifestyle measures are treatments. Abdominal radiography and antibiotics do not represent the listed standard approach.

4. Which mechanism is most commonly involved in failure of the antireflux barrier?

A. Reduced saliva production without sphincter dysfunction

B. Continuous contraction of the upper esophageal sphincter

C. Transient relaxation of the lower esophageal sphincter

D. Permanent paralysis of the lower esophageal sphincter

Answer: (C)

Explanation

Transient lower esophageal sphincter relaxation is a common mechanism contributing to antireflux barrier incompetence. Permanent sphincter hypotonia can occur but is described as rare rather than the usual mechanism.

5. Which set of factors contributes to clearance of refluxed material from the esophagus?

A. Gastric contraction, intestinal absorption, and pancreatic enzymes

B. Gravity, esophageal peristalsis, and bicarbonate-containing saliva

C. Cough suppression, reduced swallowing, and increased acid secretion

D. Lower sphincter relaxation, acid production, and delayed gastric emptying

Answer: (B)

Explanation

Esophageal clearance relies on gravity, peristaltic movements of the esophageal body, and saliva containing bicarbonate ions. Lower sphincter relaxation and acid production promote reflux exposure rather than clearing refluxed material.

6. How can reflux contribute to esophageal injury?

A. It can improve clearance, while digestive enzymes neutralize the refluxate

B. It can accelerate peristalsis, while bicarbonate and saliva intensify acid injury

C. It can impair peristalsis, while hydrogen ions and pepsin increase refluxate aggressiveness

D. It can prevent esophagitis, while gastric mucus increases chemical damage

Answer: (C)

Explanation

Reflux may impair esophageal peristalsis either directly or through esophagitis, and hydrogen ions and pepsin contribute to the harmful properties of refluxed material. Bicarbonate-containing saliva instead supports clearance and neutralization.

7. Which factor most directly conditions whether esophagitis develops during acid reflux?

A. The duration of esophageal exposure to acidic conditions

B. The presence of intestinal enzymes in the duodenum

C. The number of swallowing movements during a single meal

D. The patient’s ability to produce gastric acid after meals

Answer: (A)

Explanation

The length of time the esophagus is exposed to acid influences the development of esophagitis. Swallowing and clearance can modify exposure, but the duration of acidic contact is the stated conditioning factor.

8. Approximately what proportion of adults is affected by gastroesophageal reflux?

A. About one in four adults

B. About one in two hundred adults

C. About three in four adults

D. About one in forty adults

Answer: (A)

Explanation

Gastroesophageal reflux affects approximately one in four adults. This estimate describes its broad occurrence in the adult population rather than the frequency of esophagitis.

9. How does the frequency of esophagitis among patients with gastroesophageal reflux vary with age?

A. It occurs in about 5–10% of patients and appears mainly in childhood

B. It occurs in about 2–5% of patients and becomes less frequent with age

C. It occurs in about 20–50% of patients and becomes more frequent with age

D. It occurs in about 60–80% of patients and remains stable across ages

Answer: (C)

Explanation

Esophagitis occurs in approximately 20–50% of patients with gastroesophageal reflux, and its frequency increases with age. The other ranges and age patterns do not match the reported epidemiology.

10. What is the correct relationship between hiatal hernia and gastroesophageal reflux?

A. Hiatal hernia is neither necessary nor sufficient for gastroesophageal reflux

B. Hiatal hernia is sufficient for reflux whenever it is detected

C. Hiatal hernia prevents reflux by strengthening the antireflux barrier

D. Hiatal hernia is required for reflux and confirms its presence

Answer: (A)

Explanation

A hiatal hernia may be associated with reflux, but it is neither required for reflux to occur nor enough by itself to establish reflux. Therefore, finding or lacking a hernia does not determine the diagnosis on its own.

11. Which description best characterizes heartburn?

A. A sharp upper abdominal pain unrelated to meals or posture

B. A burning sensation reaching the mouth after waking

C. A constrictive cardiac-type pain developing behind the sternum

D. An ascending retrosternal burning pain beginning in the epigastrium

Answer: (D)

Explanation

Heartburn is an ascending retrosternal burning pain that begins in the epigastrium and often follows meals or forward bending. Constrictive cardiac-type pain describes anginal pain, which must be distinguished from heartburn.

12. Which symptom most specifically indicates regurgitation rather than heartburn?

A. A constrictive discomfort triggered by physical exertion

B. A burning pain rising behind the sternum after eating

C. A burning sensation in the mouth, often noticed on waking

D. A sharp epigastric pain worsened by lying flat

Answer: (C)

Explanation

Regurgitation is characterized by a burning sensation that reaches the mouth and may occur in the morning. Heartburn remains an ascending retrosternal burning sensation rather than reaching the mouth.

13. Approximately what proportion of patients develop atypical extra-digestive manifestations of gastroesophageal reflux?

A. About 30%, including cough, asthma, or dysphonia

B. About 70%, primarily with gastrointestinal bleeding

C. About 50%, mainly with constant retrosternal pain

D. About 10%, mainly with vomiting and diarrhea

Answer: (A)

Explanation

Atypical extra-digestive manifestations occur in about 30% of patients and include respiratory, laryngeal, dental, and pseudo-anginal features. The higher figure is associated with the approximate frequency of typical symptoms, not these atypical manifestations.

14. Which finding is an alarm sign that warrants upper gastrointestinal endoscopy in a patient with reflux symptoms?

A. Morning regurgitation without swallowing difficulty

B. Occasional heartburn after a large meal

C. Intermittent cough that improves when upright

D. Progressive dysphagia or unexplained weight loss

Answer: (D)

Explanation

Dysphagia and weight loss are alarm signs that require endoscopic evaluation because they may indicate serious structural disease. Occasional postprandial heartburn is a typical symptom but is not itself an alarm feature.

15. What can upper gastrointestinal endoscopy establish in a patient being evaluated for reflux?

A. It can diagnose reflux solely from the presence of a hiatal hernia

B. It can rule out reflux whenever the esophageal mucosa appears normal

C. It can demonstrate esophagitis, identify complications, and obtain biopsies

D. It can quantify every reflux episode without measuring acid exposure

Answer: (C)

Explanation

Endoscopy confirms reflux-related mucosal injury when esophagitis is present, detects complications and other diseases, identifies hiatal hernia, and permits biopsies. A normal examination does not exclude reflux, and a hiatal hernia alone does not establish the diagnosis.

16. How should a normal endoscopic examination be interpreted in suspected gastroesophageal reflux?

A. It rules out reflux because reflux must produce visible esophagitis

B. It does not exclude reflux because endoscopy is normal in about half of cases

C. It proves that reflux is non-acidic and requires impedance testing

D. It indicates that symptoms are caused by a gastric ulcer

Answer: (B)

Explanation

Endoscopy is normal in about 50% of reflux cases, so a normal result does not invalidate the diagnosis. Visible esophagitis documents mucosal injury, but its absence does not rule out reflux.

17. What is Barrett esophagus?

A. Replacement of distal esophageal squamous mucosa by glandular mucosa

B. A narrowing of the esophagus caused by permanent muscular contraction

C. Inflammation of the stomach lining caused by excess acid secretion

D. A backward movement of bile through the pyloric opening

Answer: (A)

Explanation

Barrett esophagus is metaplasia in which the normal squamous lining of the distal esophagus is replaced by glandular mucosa. Esophageal narrowing describes stenosis, not this mucosal transformation.

18. Which investigation is best suited to detect both acidic and non-acidic liquid or gaseous reflux?

A. Combined pH-impedance monitoring

B. Standard upper gastrointestinal endoscopy

C. Esophageal manometry performed during swallowing

D. A plain chest radiograph obtained after symptoms

Answer: (A)

Explanation

pH-impedance monitoring detects liquid and gaseous reflux, whether acidic or non-acidic, and also assesses proximal extension and bolus contact time. Conventional pH monitoring primarily detects acid reflux.

19. Why can gastroesophageal reflux worsen during pregnancy?

A. Increased acid production combines with destruction of the esophageal lining

B. Reduced abdominal pressure combines with accelerated gastric emptying

C. Hormonal relaxation of the lower sphincter combines with mechanical factors

D. Permanent sphincter paralysis combines with absent esophageal peristalsis

Answer: (C)

Explanation

Pregnancy-related reflux is promoted by hormonal relaxation of the lower esophageal sphincter together with mechanical factors. Permanent sphincter hypotonia and absent peristalsis are characteristic of scleroderma-related reflux.

20. Which mechanism explains severe gastroesophageal reflux in scleroderma?

A. Hormonal sphincter relaxation combined with pregnancy-related compression

B. Permanent lower sphincter hypotonia with absent esophageal contractions

C. Transient lower sphincter relaxation with preserved esophageal peristalsis

D. Excessive gastric contractions combined with rapid esophageal clearance

Answer: (B)

Explanation

Scleroderma causes severe reflux through permanent lower esophageal sphincter hypotonia and absence of contractions in the esophageal body. Transient sphincter relaxation with preserved peristalsis is the usual reflux mechanism rather than the scleroderma pattern.

21. What is the usual course of reflux-related esophagitis in patients who do not develop complications?

A. It progresses to cancer in most affected patients

B. It remains non-progressive in most affected patients

C. It causes stenosis in most affected patients

D. It resolves after bleeding in most affected patients

Answer: (B)

Explanation

Most affected patients have a non-progressive course without complications, although esophagitis can complicate gastroesophageal reflux. The alternative involving frequent stenosis is incorrect because peptic stenosis occurs in a minority of cases.

22. Which finding is recognized as a complication of gastroesophageal reflux?

A. Transient lower sphincter relaxation

B. Uncomplicated heartburn

C. Normal esophageal lining

D. Barrett esophagus

Answer: (D)

Explanation

Barrett esophagus is one of the documented structural complications of reflux, occurring in about 4–10% of cases. Uncomplicated reflux symptoms and a normal lining do not represent reflux lesions, while sphincter relaxation is part of the mechanism rather than a complication.

23. A patient newly diagnosed with reflux disease asks what should generally be tried first; which recommendation is most appropriate?

A. Lifestyle measures such as weight reduction and positional changes

B. Long-term antibiotics to prevent esophageal inflammation

C. Endoscopic surveillance before symptom management

D. Antireflux surgery with immediate fundoplication

Answer: (A)

Explanation

Initial management emphasizes lifestyle measures, including postural changes, reducing obesity, and avoiding relevant foods or medications. Surgery may be used as a later strategy, but it is not the usual first treatment.

24. Which treatment pairing correctly matches a drug class with its principal action in reflux management?

A. Proton-pump inhibitors increase sphincter tone and reduce gastric emptying

B. Alginates accelerate gastric emptying and strengthen peristalsis

C. Prokinetics increase sphincter tone and promote gastrointestinal motility

D. H2 antagonists create a mechanical antireflux valve at the gastroesophageal junction

Answer: (C)

Explanation

Prokinetics act on motility by increasing lower esophageal sphincter tone, promoting peristalsis, and accelerating gastric emptying. Proton-pump inhibitors and H2 antagonists primarily suppress acid secretion, whereas alginates relieve symptoms and surgery creates an antireflux mechanism.

25. After 4–8 weeks of treatment, which healing rate is expected with proton-pump inhibitors compared with H2 antagonists?

A. About 70–85% with proton-pump inhibitors versus about 50% with H2 antagonists

B. About 50% with proton-pump inhibitors versus about 70–85% with H2 antagonists

C. About 90–100% with proton-pump inhibitors versus about 20–30% with H2 antagonists

D. About 20–30% with proton-pump inhibitors versus about 40–50% with H2 antagonists

Answer: (A)

Explanation

Proton-pump inhibitors produce healing in approximately 70–85% of patients after 4–8 weeks, compared with about 50% for H2 antagonists. The reversed comparison reflects the documented treatment-response difference.

26. A 45-year-old patient has typical reflux symptoms without alarm signs; which management approach is appropriate?

A. Manage according to symptom frequency with lifestyle and medical measures

B. Use antibiotics first and investigate only if symptoms persist

C. Perform endoscopy immediately because the patient has typical symptoms

D. Proceed directly to surgery before trying conservative treatment

Answer: (A)

Explanation

Patients younger than 50 years with typical symptoms and no alarm signs are managed according to symptom frequency using lifestyle measures and appropriate medications. Endoscopy is required when alarm signs are present or when the patient is over 50 years old.