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Clinical Guidelines | 4 December 2012

Upper Endoscopy for Gastroesophageal Reflux Disease: Best Practice Advice From the Clinical Guidelines Committee of the American College of Physicians FREE

Nicholas J. Shaheen, MD, MPH; David S. Weinberg, MD, MSc; Thomas D. Denberg, MD, PhD; Roger Chou, MD; Amir Qaseem, MD, PhD, MHA; Paul Shekelle, MD, PhD; and for the Clinical Guidelines Committee of the American College of Physicians*

[+-] Article and Author Information

Ann Intern Med. 4 December 2012;157(11):808-816

Abstract

Abstract | GERD, Barrett Esophagus, and Esophageal Adenocarcinoma | Endoscopy as a Screening Test for Adenocarcinoma of the Esophagus | What Is the Appropriate Use of Upper Endoscopy in the Setting of Chronic GERD? | Does Practice Follow the Evidence? | What Factors May Promote Overuse of Upper Endoscopy? | Potential Harms of Endoscopy Overuse | How Can Primary Care Physicians Promote Rational Use of Upper Endoscopy in the Setting of GERD? | ACP Best Practice Advice | Conclusion | References

Also available: Consumer Reports Patient Resource on High-Value Care for GERD

Background: Upper endoscopy is commonly used in the diagnosis and management of gastroesophageal reflux disease (GERD). Evidence demonstrates that it is indicated only in certain situations, and inappropriate use generates unnecessary costs and exposes patients to harms without improving outcomes.

Methods: The Clinical Guidelines Committee of the American College of Physicians reviewed evidence regarding the indications for, and yield of, upper endoscopy in the setting of GERD, and to highlight how clinicians can increase the delivery of high-value health care.

Best Practice Advice 1: Upper endoscopy is indicated in men and women with heartburn and alarm symptoms (dysphagia, bleeding, anemia, weight loss, and recurrent vomiting).

Best Practice Advice 2: Upper endoscopy is indicated in men and women with:

Typical GERD symptoms that persist despite a therapeutic trial of 4 to 8 weeks of twice-daily proton-pump inhibitor therapy.

Severe erosive esophagitis after a 2-month course of proton-pump inhibitor therapy to assess healing and rule out Barrett esophagus. Recurrent endoscopy after this follow-up examination is not indicated in the absence of Barrett esophagus.

History of esophageal stricture who have recurrent symptoms of dysphagia.

Best Practice Advice 3: Upper endoscopy may be indicated:

In men older than 50 years with chronic GERD symptoms (symptoms for more than 5 years) and additional risk factors (nocturnal reflux symptoms, hiatal hernia, elevated body mass index, tobacco use, and intra-abdominal distribution of fat) to detect esophageal adenocarcinoma and Barrett esophagus.

For surveillance evaluation in men and women with a history of Barrett esophagus. In men and women with Barrett esophagus and no dysplasia, surveillance examinations should occur at intervals no more frequently than 3 to 5 years. More frequent intervals are indicated in patients with Barrett esophagus and dysplasia.

Also available: Consumer Reports Patient Resource on High-Value Care for GERD

Typical GERD symptoms that persist despite a therapeutic trial of 4 to 8 weeks of twice-daily proton-pump inhibitor therapy.

History of esophageal stricture who have recurrent symptoms of dysphagia.

Upper endoscopy is commonly used in the diagnosis and management of gastroesophageal reflux disease (GERD). The Clinical Guidelines Committee of the American College of Physicians reviewed evidence regarding the indications for, and yield of, upper endoscopy in the setting of GERD to highlight how clinicians can increase delivery of high-value care. This article reviews their best practice advice.

Gastroesophageal reflux disease (GERD) is among the most common conditions encountered in primary care practice. Its effect on quality of life is substantial (1 – 2). Upper endoscopy is widely available and routinely done for diagnosis and management of GERD and its complications (3). However, the indications for this procedure are incompletely defined. Overuse of upper endoscopy contributes to higher health care costs without improving patient outcomes. The purpose of this best practice advice article from the Clinical Guidelines Committee of the American College of Physicians (ACP) is to describe the indications for, and yield of, upper endoscopy in the setting of GERD and to help primary care physicians make high-value decisions about referral of patients for upper endoscopy. In formulating these recommendations, a team of general internists, gastroenterologists, and clinical epidemiologists reviewed the literature on use of upper endoscopy in the setting of GERD, as well as epidemiology of GERD and esophageal adenocarcinoma. Clinical guidelines from professional organizations recommending use of upper endoscopy in GERD were compared. This document is not based on a formal systematic review but instead seeks to provide practical advice based on the best available evidence.

GERD, Barrett Esophagus, and Esophageal Adenocarcinoma

Gastroesophageal reflux disease is a condition that develops when reflux of stomach contents into the esophagus causes troublesome symptoms, complications, or both (4). Implicit in this definition is that tissue injury is not necessary to fulfill disease criteria. Indeed, 50% to 85% of patients with GERD have nonerosive reflux disease (5). As many as 40% of U.S. adults report some symptoms of reflux disease (chiefly heartburn and regurgitation), and 10% to 20% have symptoms on a weekly or more frequent basis (6 – 8). At least 2 acid-suppressive medications have been in the top 10 list of most prescribed medications in the United States every year from 2003 to 2009 (9) and more than 110 million prescriptions for these agents are filled yearly (10). Many more patients purchase over-the-counter acid-suppressive medications.

Approximately 10% of patients with chronic heartburn symptoms have Barrett esophagus, a metaplastic change of the esophageal lining from the normal squamous to specialized columnar epithelium (11). Both GERD and Barrett esophagus are associated with an increased risk for esophageal adenocarcinoma (12 – 13). Although the absolute risk for adenocarcinoma of the esophagus in the general population remains low (26 cases per 1 million in the U.S. population), its incidence has increased more than 5-fold in the past 40 years (14). Patients with adenocarcinoma of the esophagus continue to have a poor prognosis, with a 5-year survival rate less than 20% (15). Most cases of esophageal cancer presents symptomatically, usually at a stage too advanced to allow curative intervention (16).

Adenocarcinoma of the esophagus is believed to develop from Barrett esophagus through progressive stages of dysplasia. Although progression is not inevitable, worsening dysplasia is associated with a greater risk for cancer. For example, whereas patients with Barrett esophagus and no dysplasia have a cancer risk of 0.1% to 0.5% per patient-year (13,17), patients with Barrett esophagus and high-grade dysplasia have a cancer risk of 6% to 19% per patient-year (18 – 20).

Given the rising prevalence of chronic GERD symptoms (21), it is perhaps not surprising that the use of upper endoscopy for GERD indications is also rising. At present, GERD is the most common indication for upper endoscopy in the United States (3). Assessment of data from the Centers for Medicare & Medicaid Services show that although Medicare enrollment increased by 17% over the past decade, there was a concurrent increase of greater than 40% in use of upper endoscopy among Medicare beneficiaries (www.cms.gov/NonIdentifiableDataFiles). In addition, 13% of patients older than 50 years continuously covered by Independence Blue Cross (Pennsylvania) for 5 years had upper endoscopy during that period. Thirty-four percent of these examinations had a GERD indication. These data indicate that 4.4% of covered patients had upper endoscopy for GERD over a 5-year period, or nearly 1% each year (Snyder R. Personal communication.).

Endoscopy as a Screening Test for Adenocarcinoma of the Esophagus

In an effort to promote early detection and reduce the risk for death from adenocarcinoma of the esophagus, many clinicians perform screening upper endoscopy on patients with chronic GERD symptoms. Patients who are diagnosed with Barrett esophagus are then enrolled in endoscopic surveillance programs in which biopsies of the abnormal tissue are done to identify dysplastic changes (22). Although screening and surveillance programs should theoretically allow for the early detection of cancer, several factors limit the reach and effectiveness of such programs. First, GERD symptoms have poor sensitivity and specificity as predictors of cancer risk. Approximately 40% of patients who develop adenocarcinoma of the esophagus have no heartburn (12,23 – 24), and the yearly risk for cancer among persons aged 50 years or older who have heartburn has been estimated at 0.04% (25). Second, focusing on heartburn ignores other predictors of disease. There is a striking predominance of male sex in esophageal adenocarcinoma, with approximately 80% of cancer occurring in men (26 – 27). In fact, men without GERD symptoms appear to have a higher risk for Barrett esophagus than women with GERD symptoms (28). Data suggest that the risk for esophageal adenocarcinoma in women with GERD is roughly equal to that of breast cancer in men (Figure 1) (29).

Grahic Jump Location

Figure 1.

Cancer incidence as a function of age.

Estimated incidence of EAC in men and women with weekly GERD symptoms as a function of age, compared with other types of cancer, including BrCa in women and men and CRC in men and women. The green horizontal line represents incidence of CRC in women aged 50 years (an age at which endoscopic screening procedures are endorsed by many organizations) as a benchmark comparison. Note that the incidences of EAC in women with GERD and BrCa in men overlap (from reference 29). BrCa = breast cancer; CRC = colorectal cancer; EAC = esophageal adenocarcinoma; GERD = gastroesophageal reflux disease.

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Endoscopy with random biopsies may not detect dysplasia or early cancer because the dysplastic lesion often involves only a small percentage of the total surface area of the Barrett segment (30). Histologic interpretation of endoscopic biopsy specimens is difficult because of small tissue samples and the somewhat subjective nature of grading dysplasia (31 – 32). Another challenge associated with endoscopic surveillance is the requirement for patient adherence to serial endoscopy sessions. Data show that a substantial number of patients eligible for surveillance may not return for recommended examinations (33).

In addition, the utility of endoscopic surveillance is limited by the low incidence of adenocarcinoma in nondysplastic Barrett esophagus. Although patients with this disorder are at higher risk for cancer than the general public, the absolute risk for this cancer in patients with Barrett esophagus but no dysplasia is still low. A recent population-based study found that less than 2% of patients with nondysplastic Barrett esophagus followed for more than 5 years developed cancer (17). Finally and most important, no direct evidence shows that screening and surveillance endoscopy programs actually decrease death from adenocarcinoma of the esophagus. Cohort and case–control studies demonstrate that cancer discovered through endoscopic screening and surveillance do present at earlier stages, with less lymph node involvement, and are associated with longer survival than cancer presenting symptomatically (34 – 37). However, lead time and length bias limit the interpretability of such data (38). Given that 1% to 5% of the U.S. adult population may have Barrett esophagus (39 – 40), the public health and financial implications of endoscopic screening and surveillance programs are substantial.

The 3 major U.S. gastroenterologic professional societies have all released guideline documents with differing recommendations, which may confuse clinicians about the most appropriate course. The American Society of Gastrointestinal Endoscopy recommends that screening upper endoscopy be considered “in selected patients with chronic, longstanding GERD” (41). They identify frequent GERD symptoms (several times per week), chronic GERD symptoms (symptoms for >5 years), age older than 50 years, white race, male sex, and nocturnal reflux symptoms as risk factors. American Gastroenterological Association guidelines recommend against screening the general population with GERD for Barrett esophagus and esophageal adenocarcinoma but say that it should be considered in patients with GERD who have several risk factors associated with esophageal adenocarcinoma (42 – 43), including age 50 years or older, male sex, white race, hiatal hernia, elevated body mass index, and intra-abdominal distribution of fat. Neither the relative importance of these risk factors nor the number of risk factors necessary to trigger screening is stated. Lastly, the American College of Gastroenterology guidelines note that “screening for Barrett’s esophagus in the general population cannot be recommended at this time. The use of screening in selective populations at higher risk remains to be established, and therefore should be individualized” (22). They, too, note GERD symptoms and body mass index as risk factors for Barrett esophagus. As acknowledged by the authors, formulation of these guidelines was hampered by the generally poor quality of data about the use of endoscopic screening and surveillance programs. In many cases, expert opinion formed the basis for specific recommendations.

What Is the Appropriate Use of Upper Endoscopy in the Setting of Chronic GERD?

Because of its high prevalence in the general population, care of patients with GERD is largely within the domain of primary care providers. In many health care systems, primary care providers refer patients for “open-access” upper endoscopy (endoscopy without antecedent specialist consultation). Given the dearth of data substantiating the clinical effectiveness of endoscopy in patients with chronic GERD symptoms and no alarm symptoms, what should the primary care provider do?

In most patients with typical GERD symptoms, such as heartburn or regurgitation, an initial trial of empirical acid-suppressive therapy with once-daily proton-pump inhibitors (PPIs) is warranted and endoscopy is not indicated. This may be escalated to twice-daily therapy if once-daily therapy is unsuccessful. If 4 to 8 weeks of twice-daily empirical PPI therapy is unsuccessful, further investigation with endoscopy is recommended (42). Any PPI (dexlansoprazole, esomeprazole, lansoprazole, omeprazole, pantoprazole, or rabeprazole) may be used because absolute differences in efficacy for symptom control and tissue healing are small (44 – 46). For most PPIs, dosing 30 to 60 minutes before a meal may provide optimal efficacy.

In contrast to issues surrounding endoscopic screening for esophageal cancer, the value of endoscopy is well-substantiated in several clinical settings. Gastroesophageal reflux disease associated with the alarm symptoms of dysphagia, bleeding, anemia, weight loss, or recurrent vomiting merits investigation with upper endoscopy because of its yield of potentially clinically actionable findings, such as cancer of the esophagus or stomach, bleeding lesions in the foregut, or stenosis of the esophagus or pylorus. In a recent analysis of approximately 30 000 patients with dysphagia who had endoscopy, greater than 50% had important clinical findings (most commonly, esophageal stricture) (47). Also, patients with a documented history of severe erosive esophagitis (grade B or worse on a validated A-to-D scoring system 48) treated with PPIs have a substantial rate of incomplete healing with medical therapy (44,49 – 50) and may have Barrett esophagus in the areas of previously denuded esophageal epithelium (51 – 53). For these reasons, follow-up upper endoscopy is recommended after 8 weeks of PPI therapy for severe esophagitis to ensure healing and to rule out Barrett esophagus. If this examination is normal, further routine upper endoscopy is not indicated. The use of upper endoscopy in patients with esophageal stricture secondary to GERD is largely symptom-based. Because recurrence of strictures is common (54 – 55), repeated upper endoscopy with dilatation may be required. However, in patients with a history of stricture who remain asymptomatic, routine endoscopy is not necessary.

In patients with well-controlled symptoms, should screening endoscopy be done to assess for Barrett esophagus or adenocarcinoma? Although current data and the published guidelines do not allow a definitive assessment of the value of endoscopic screening, several conclusions may be drawn. First, because of the difference in cancer incidence between men and women and the low absolute risk for this cancer in women (26 – 27), routine screening of women, regardless of GERD symptoms, cannot be recommended. Similarly, given the very low incidence of esophageal adenocarcinoma in younger patients (56), routine screening of those younger than 50 years, regardless of GERD symptoms, does not seem to be warranted. If endoscopic screening of patients with GERD symptoms is to be pursued, men older than 50 years will provide the highest yield of both Barrett esophagus and early adenocarcinoma. Decision making in men older than 50 years with GERD symptoms should be individualized, but the low quality of the evidence in support of screening must be recognized. The decision making should also include an assessment of the patient’s life-limiting comorbid conditions.

Among patients who have endoscopy and are found to have Barrett esophagus, many organizations recommend endoscopic surveillance (22,41,57). Again, these recommendations rest on observational data from surveillance programs showing improved outcomes in cancer found as part of surveillance programs, compared with those presenting symptomatically (36 – 37). Although no studies have evaluated comparative benefits of various screening intervals for patients with Barrett esophagus without dysplasia, upper endoscopy at 3- to 5-year intervals has been recommended on the basis of natural history data and expert opinion (22,41,57). More frequent endoscopy is reserved for the subset of patients who develop low- or high-grade dysplasia, as they face a higher risk for progression to cancer.

Patients with chronic GERD symptoms whose screening upper endoscopy showed no Barrett esophagus may wonder about the utility of recurrent examinations. Because patients are accustomed to the paradigm of periodic cancer screening examinations, the question, “When will I need it again?” is common. In patients with chronic GERD (symptoms for more than 5 years or medical therapy for more than 5 years to avert symptoms) whose initial endoscopic screening results were negative, no additional endoscopic screening is necessary, even if the patient continues medical therapy. Observational data show that the likelihood of development of Barrett esophagus in the 5 years after a negative result in such patients is less than 2% (58), making the yield of serial examinations after an initial negative result very low. Therefore, routine serial endoscopy in patients with initially negative results for Barrett esophagus is not recommended.

Does Practice Follow the Evidence?

Limited data suggest that clinicians who care for patients with GERD symptoms often do not follow suggested practice. Using liberal criteria defined by the American Society of Gastrointestinal Endoscopy for appropriateness of upper endoscopy (59), studies demonstrate that 10% to 40% of upper endoscopies are not “generally indicated” (60 – 64). Common errors include serial upper endoscopies for patients with GERD and no Barrett esophagus, examinations for Barrett surveillance at intervals that are too short, and early endoscopy in patients without alarm symptoms or factors associated with elevated risk for Barrett esophagus or esophageal cancer. Surveys of endoscopists demonstrate that they often would do screening upper endoscopy in situations where it would be extremely low yield (65). In addition, endoscopists often recommend surveillance intervals in patients with known Barrett esophagus shorter than those merited based on the natural history (65 – 68).

What Factors May Promote Overuse of Upper Endoscopy?

An oft-cited factor that promotes overuse of upper endoscopy is fear of medicolegal liability in the event that endoscopy is not done and esophageal adenocarcinoma subsequently develops. Indeed, in 1 survey of endoscopists, a primary predictor of use of upper endoscopy in low-yield situations was previous identification as a defendant in a malpractice suit (65). Financial incentives may also play a role, given that upper endoscopy constitutes approximately one third of the case load for the average endoscopist (3). Patient and primary caregiver expectations may also promote overuse. Because patients and primary care providers anticipate serial cancer screening, they may inappropriately view no screening or a once-in-a-lifetime screening upper endoscopy for GERD symptoms as inadequate on the basis of an inflated estimate of the risk for precancerous or cancerous lesions. Similarly, patients who have Barrett esophagus and no dysplasia may be dissatisfied with a 3- to 5-year interval of surveillance examinations. Once they are given the diagnosis of a “precancerous condition,” patients (and their primary care providers) may prefer more frequent endoscopic surveillance. Patients with Barrett esophagus may grossly overestimate their risk for esophageal cancer (69).

Potential Harms of Endoscopy Overuse

Upper endoscopy is a low-risk procedure, carrying a 1-in-1000 to 1-in-10 000 risk for complications, which include perforation, cardiovascular events, or death (70 – 71). Other rare, but real, risks inherent in upper endoscopy include aspiration pneumonia, respiratory failure, hypotension, dysrhythmia, or other reactions to the anesthetic agents. Despite the uncommon nature of endoscopy complications, given the large number of patients with chronic GERD symptoms, overuse of upper endoscopy in patients with GERD symptoms implies the potential for thousands of complications (25). Costs and complications are also associated with downstream diagnostic tests or unnecessary treatment due to erroneous findings on upper endoscopy. For example, some patients with Barrett esophagus may have esophagectomy for low-grade dysplasia misdiagnosed as high-grade dysplasia or cancer. Similarly, many patients labeled as having Barrett esophagus, when examined retrospectively, do not fulfill the criteria for diagnosis and are incorrectly labeled as having the disease (72).

In addition to potential physical risks to patients’ health, overuse of upper endoscopy has substantial negative financial implications for both patients and society. On average, upper endoscopy costs more than $800 per examination (73). Even insured patients may have to bear a substantial portion of this cost in the form of copays and deductibles. The indirect costs to the patients and their families are also substantial. Because conscious sedation is generally used for these examinations, both the patient and a guardian are generally absent from work or other activities on the day of the examination. Because many patients who have upper endoscopy for GERD symptoms are aged 65 years or older, much of the direct cost of endoscopic screening and surveillance is sustained by the Medicare program.

How Can Primary Care Physicians Promote Rational Use of Upper Endoscopy in the Setting of GERD?

Figure 2 summarizes ways in which the primary care provider can promote appropriate use of upper endoscopy. Primary care providers increasingly act as the source for endoscopic referral. Once an open-access referral has been generated, it is highly likely that the examination will be done because of patient expectations and the gastroenterologist’s desire to provide the requested service.

Grahic Jump Location

Figure 2.

Summary of the ACP best practice advice: upper endoscopy in the setting of GERD.

BMI = body mass index; GERD = gastroesophageal reflux disease; PPI = proton-pump inhibitor.

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In patients being referred to a gastroenterologist or surgeon for consultation about upper gastrointestinal symptoms, as opposed to referral for the technical service of endoscopy, both the patient and the consultant should clearly understand that a cognitive service to aid in medical management, not a “referral for upper endoscopy,” is the goal of the evaluation. In addition, understanding the epidemiology and risk factors for Barrett esophagus, adenocarcinoma of the esophagus, and other complications of GERD can help primary care physicians make more rational decisions about referral for endoscopy.

ACP Best Practice Advice

Best Practice Advice 1

Upper endoscopy is indicated in men and women with heartburn and alarm symptoms (dysphagia, bleeding, anemia, weight loss, and recurrent vomiting).

Best Practice Advice 2

Upper endoscopy is indicated in men and women with:

Typical GERD symptoms that persist despite a therapeutic trial of 4 to 8 weeks of twice-daily PPI therapy.

Severe erosive esophagitis after a 2-month course of PPI therapy to assess healing and rule out Barrett esophagus. Recurrent endoscopy after this follow-up examination is not indicated in the absence of Barrett esophagus.

History of esophageal stricture who have recurrent symptoms of dysphagia.

Best Practice Advice 3

Upper endoscopy may be indicated:

The ACP has found evidence that upper endoscopy is indicated in patients with heartburn and alarm symptoms, such as dysphagia, bleeding, anemia, weight loss, and recurrent vomiting. However, upper endoscopy is not an appropriate first step in most patients with GERD symptoms and is indicated only when empirical PPI therapy for 4 to 8 weeks is unsuccessful. Upper endoscopy is not indicated in asymptomatic patients with a history of esophageal stricture but is appropriate in patients with recurrent symptoms of dysphagia.

Screening upper endoscopy should not be routinely done in women of any age or in men younger than 50 years regardless of GERD symptoms because the incidence of cancer is very low in these populations. Screening endoscopy may be indicated in men older than 50 years with several risk factors for Barrett esophagus. This screening decision should include an assessment of the patient’s life-limiting comorbid conditions. Risk factors include chronic GERD symptoms (symptoms of >5 years’ duration), nocturnal reflux symptoms, hiatal hernia, elevated body mass index, tobacco use, and intra-abdominal distribution of fat. If an initial screening examination is negative for Barrett esophagus or esophageal adenocarcinoma, recurrent periodic endoscopy is not indicated. Among patients found to have Barrett esophagus on screening upper endoscopy, endoscopic surveillance may be indicated at 3- to 5-year intervals. More frequent endoscopic examinations are reserved for patients with low- or high-grade dysplasia because of their higher risk for progression to cancer.

Unnecessary endoscopy exposes patients to preventable harms, may lead to additional unnecessary interventions, and results in unnecessary costs. Patient education strategies should be used to inform patients about current and effective standards of care.

Figure 2 summarizes ACP’s best practice advice for the upper endoscopy in the setting of GERD.

Conclusion

Endoscopy has revolutionized the diagnosis and management of gastrointestinal illness. However, inappropriate use has the potential to add cost with no benefit. Data suggest that upper endoscopy in the setting of GERD symptoms is useful only in a few, well-circumscribed situations, as previously reviewed. Avoidance of repetitive, low-yield endoscopy that has little effect on clinical management or health outcomes will improve patient care and reduce costs.

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Üst Gastroözofajeal reflü endoskopisi

ByBerk Özdemir

Upper Endoscopy for Gastroesophageal Reflux Disease: Best Practice Advice From the Clinical Guidelines Committee of the American College of Physicians FREE

Abstract

GERD, Barrett Esophagus, and Esophageal Adenocarcinoma

Endoscopy as a Screening Test for Adenocarcinoma of the Esophagus

What Is the Appropriate Use of Upper Endoscopy in the Setting of Chronic GERD?

Does Practice Follow the Evidence?

What Factors May Promote Overuse of Upper Endoscopy?

Potential Harms of Endoscopy Overuse

How Can Primary Care Physicians Promote Rational Use of Upper Endoscopy in the Setting of GERD?

ACP Best Practice Advice

Best Practice Advice 1

Best Practice Advice 2

Best Practice Advice 3

Conclusion

References

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