Abstract
Unexplained fullness after eating, inability to finish a normal-sized meal (early satiety), and/or epigastric pain or burning are common symptoms. In clinical practice the likeliest explanation is functional dyspepsia, where by definition esophagogastroduodenoscopy is normal, with no other structural explanation found. Symptoms may be primarily after eating, as in postprandial distress syndrome, or may have no relationship to meals (epigastric pain syndrome). The diagnosis of functional dyspepsia requires exclusion of organic disease. The pathogenesis is incompletely understood and is likely multifactorial. In a minority, Helicobacter pylori (H. pylori) infection plays a role, but some patients have microscopic duodenal inflammation characterised by eosinophils, and sometimes mast cells. Currently, treatment involves a stepwise approach. If H. pylori infection is present, eradication therapy may be beneficial. Acid suppression is otherwise first-line therapy. An antidepressant (a low-dose tricyclic agent) or prokinetic agent is second-line therapy.
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References
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Essential Reading
Moayyedi PM, Lacy BE, Andrews CN, Enns RA, Howden CW, Vakil N. ACG and CAG clinical guideline: management of dyspepsia. Am J Gastroenterol. 2017;112:988. Evidence-based guidelines for the diagnosis and management of patients with dyspepsia.
Stanghellini V, Chan FKL, Hasler WL, Malagelada JR, Suzuki H, Tack J, et al. Gastroduodenal disorders. Gastroenterol. 2016;150(6):1380–92. Provides a detailed overview of FD and other functional disorders, with reference to the Rome IV Criteria.
Talley NJ, Ford AC. Functional dyspepsia. N Engl J Med. 2015;373(19):1853–63. Expert overview of FD with explanation of disease mechanisms and discussion of relevant clinical trials.
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Self-Test
Self-Test
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Question 1. A 45-year-old man consults regarding a 5-year history of epigastric discomfort, described as burning in nature. Early in its course, the pain was intermittent and tended to occur after meals, although he feels that it is occurring more frequently in recent times. He had a poor response to a PPI. In addition, he has noticed his stools have become increasingly loose and offensive and at times are difficult to flush. EGD with gastric and duodenal biopsies 2Â years ago on a normal diet were unremarkable.
Which of the following investigations is most likely to help establish a diagnosis?
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A.
Repeat EGD and duodenal biopsies.
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B.
Urease breath test for H. pylori
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C.
Abdominal CT scan
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D.
Glucose hydrogen breath test
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E.
Celiac serology
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A.
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Question 2. You are reviewing a 35-year-old female who has returned for follow-up after a normal EGD for symptoms of moderately severe persistent dyspepsia, with normal bowel habits. Gastric biopsies were normal, without evidence of H. pylori. Duodenal biopsies demonstrated an eosinophil count of 30/hpf, on at least 5 high-power fields. There were no typical changes of coeliac disease.
You make a diagnosis of FD, likely PDS, and discuss management options. Which of the following would you recommend as first-line based on randomised controlled trials?
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A.
Trial of PPI
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B.
Low FODMAP diet and psychotherapy
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C.
Trial of a TCA
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D.
No treatment indicated – reassurance and discharge to primary care physician
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E.
H2RA
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A.
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Question 3. The Rome IV criteria provide a symptom-based framework for the diagnosis of functional dyspepsia (FD) and its subtypes. Which of the following symptoms is least likely to occur in functional dyspepsia, and should alert clinicians to an alternative diagnosis?
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A.
Excessive belching
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B.
Heartburn less than once a week
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C.
Frequent postprandial vomiting
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D.
Nausea
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E.
Early satiety
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A.
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Talley, N.J., Cook, D.R. (2019). Functional Dyspepsia. In: Lacy, B., DiBaise, J., Pimentel, M., Ford, A. (eds) Essential Medical Disorders of the Stomach and Small Intestine. Springer, Cham. https://doi.org/10.1007/978-3-030-01117-8_8
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