Abdul Aziz Rani

Second Asia–Pacific Consensus Guidelines for Helicobacter pylori infection

The Asia–Pacific Consensus Conference was convened to review and synthesize the most current information on Helicobacter pylori management so as to update the previously published regional guidelines. The group recognized that in addition to long‐established indications, such as peptic ulcer disease, early mucosa‐associated lymphoid tissue (MALT) type lymphoma and family history of gastric cancer, H. pylori eradication was also indicated for H. pylori infected patients with functional dyspepsia, in those receiving long‐term maintenance proton pump inhibitor (PPI) for gastroesophageal reflux disease, and in cases of unexplained iron deficiency anemia or idiopathic thrombocytopenic purpura. In addition, a population ‘test and treat’ strategy for H. pylori infection in communities with high incidence of gastric cancer was considered to be an effective strategy for gastric cancer prevention. It was recommended that H. pylori infection should be tested for and eradicated prior to long‐term aspirin or non‐steroidal anti‐inflammatory drug therapy in patients at high risk for ulcers and ulcer‐related complications. In Asia, the currently recommended first‐line therapy for H. pylori infection is PPI‐based triple therapy with amoxicillin/metronidazole and clarithromycin for 7 days, while bismuth‐based quadruple therapy is an effective alternative. There appears to be an increasing rate of resistance to clarithromycin and metronidazole in parts of Asia, leading to reduced efficacy of PPI‐based triple therapy. There are insufficient data to recommend sequential therapy as an alternative first‐line therapy in Asia. Salvage therapies that can be used include: (i) standard triple therapy that has not been previously used; (ii) bismuth‐based quadruple therapy; (iii) levofloxacin‐based triple therapy; and (iv) rifabutin‐based triple therapy. Both CYP2C19 genetic polymorphisms and cigarette smoking can influence future H. pylori eradication rates.

Asia-Pacific consensus guidelines on gastric cancer prevention

Background and Aim:  Gastric cancer is a major health burden in the Asia–Pacific region but consensus on prevention strategies has been lacking. We aimed to critically evaluate strategies for preventing gastric cancer.

Asia-Pacific consensus on the management of gastroesophageal reflux disease: update.

Background and Aims:  Since the publication of the Asia‐Pacific GERD consensus in 2004, more data concerning the epidemiology and management of gastroesophageal reflux disease (GERD) have emerged. An evidence based review and update was needed.

Asia-Pacific consensus on the management of gastro-oesophageal reflux disease: an update focusing on refractory reflux disease and Barrett's oesophagus

Objective Since the publication of the Asia-Pacific consensus on gastro-oesophageal reflux disease in 2008, there has been further scientific advancement in this field. This updated consensus focuses on proton pump inhibitor-refractory reflux disease and Barretts oesophagus. Methods A steering committee identified three areas to address: (1) burden of disease and diagnosis of reflux disease; (2) proton pump inhibitor-refractory reflux disease; (3) Barretts oesophagus. Three working groups formulated draft statements with supporting evidence. Discussions were done via email before a final face-to-face discussion. We used a Delphi consensus process, with a 70% agreement threshold, using Grading of Recommendations Assessment, Development and Evaluation (GRADE) criteria to categorise the quality of evidence and strength of recommendations. Results A total of 32 statements were proposed and 31 were accepted by consensus. A rise in the prevalence rates of gastro-oesophageal reflux disease in Asia was noted, with the majority being non-erosive reflux disease. Overweight and obesity contributed to the rise. Proton pump inhibitor-refractory reflux disease was recognised to be common. A distinction was made between refractory symptoms and refractory reflux disease, with clarification of the roles of endoscopy and functional testing summarised in two algorithms. The definition of Barretts oesophagus was revised such that a minimum length of 1 cm was required and the presence of intestinal metaplasia no longer necessary. We recommended the use of standardised endoscopic reporting and advocated endoscopic therapy for confirmed dysplasia and early cancer. Conclusions These guidelines standardise the management of patients with refractory gastro-oesophageal reflux disease and Barretts oesophagus in the Asia-Pacific region.

A 2008 Questionnaire-Based Survey of Gastroesophageal Reflux Disease and Related Diseases by Physicians in East Asian Countries

Background/Aims: Gastroesophageal reflux disease (GERD) is a common gastrointestinal disease. This study was designed to examine current epidemiology, diagnosis, management, and treatment of patients diagnosed with GERD by surveying physicians in several East Asian countries. Methods: A questionnaire-based survey was completed in six countries including China, Indonesia, Japan, Korea, the Philippines, and Thailand between July 2008 and December 2008. Results: In total, 876 physicians participated in the study. Most physicians in all countries, except Japan, frequently used international guidelines for the care of GERD patients, whereas approximately half of Japanese physicians did not use such guidelines. GERD was common among many patients, but Barrett’s esophagus, particularly the long-segmental type, was rare. The incidence of esophageal cancer, particularly adenocarcinoma, was high in China, but low in other countries. Most physicians diagnosed GERD based on symptoms, followed by endoscopy in Japan and Korea, or in other countries, by the proton-pump inhibitor (PPI) test. Heartburn was recognized as the chief complaint in all countries except Korea. Most physicians in all countries used PPI as the first-line of treatment for GERD. Increasing the PPI dose was the treatment of choice for PPI-refractory erosive esophagitis in Korea, the Philippines, and Thailand. In contrast, in other countries, physicians used a combination of PPI and other drugs to treat PPI-refractory erosive esophagitis. Prescription of antidepressant drugs increased for PPI-refractory nonerosive reflux disease compared with PPI-refractory erosive esophagitis. Conclusion: The findings in the present survey are useful to understand the current epidemiology, diagnosis, and treatment of GERD in East Asian countries.

A questionnaire-based survey on the prescription of non-steroidal anti-inflammatory drugs by physicians in East Asian countries in 2007.

Background: Nonsteroidal anti-inflammatory drugs (NSAIDs) and aspirin are widely used clinically but increase the risk of gastrointestinal (GI) complications. Aim: To examine the current prescription of NSAIDs and comedication to prevent GI complications from NSAIDs within East Asia by means of a questionnaire survey. Methods: Representative members of the Committee of the International Gastrointestinal Consensus Symposium provided a questionnaire to physicians in 6 East Asian countries. Results: A total of 1,568 physicians participated in this survey. Most physicians prescribed nonselective NSAIDs, cyclooxygenase-2 inhibitors (COXIBs) or aspirin for more than 5 patients per week in all countries, with the exception of the prescription of COXIBs in Japan. Of the nonselective NSAIDs, the drug most frequently prescribed as a first choice was loxoprofen (34%), which was mainly prescribed in Japan, followed by diclofenac (30%). The frequency of prescription of comedication with nonselective NSAIDs was higher compared with that for selective COXIBs or aspirin. Physicians in the northern region (China, Japan and Korea) preferred mucoprotective drugs for comedication with NSAIDs or aspirin, while those in southern region (Indonesia, Philippines and Thailand) frequently used proton-pump inhibitors. Conclusion: Among East Asian countries, there are both similarities and differences in the prescription of NSAIDs and of comedication to prevent GI complications.

Unmet treatment needs of gastroesophageal reflux disease in Asia: gastroesophageal reflux disease in Asia Pacific survey.

Data on patient satisfaction with proton pump inhibitor (PPI) therapy for gastroesophageal reflux disease (GERD) are scarce in Asia. The perspectives of Asian patients with GERD and their satisfaction with PPI therapy were investigated.

Questionnaire-Based Survey Conducted in 2011 concerning Endoscopic Management of Barrett’s Esophagus in East Asian Countries

Background/Aims: Endoscopic definitions and management of Barrett’s esophagus vary widely among countries. To examine the current situation regarding diagnosis, epidemiology, management and treatment of Barrett’s esophagus in East Asian countries using a questionnaire-based survey. Methods: Representative members of the Committee of the International Gastrointestinal Consensus Symposium developed and sent a questionnaire to major institutions in China, South Korea, Japan, Thailand, Indonesia, and the Philippines. Results: A total of 56 institutions in the 6 countries participated in the survey. We found that the presence of specialized columnar metaplasia is considered to be important for diagnosing Barrett’s esophagus in East Asian countries except for Japan. C&M criteria have not been well accepted in East Asia. The palisade vessels are mainly used as a landmark for the esophagogastric junction in Japan. The prevalence of long segment Barrett’s esophagus is extremely low in East Asia, while the prevalence of short segment Barrett’s esophagus is very high only in Japan, likely due to different diagnostic criteria. Conclusion: Among East Asian countries, we found both similarities and differences regarding diagnosis and management of Barrett’s esophagus. The findings in the present survey are helpful to understand the current situation of Barrett’s esophagus in East Asian countries.

Survey of Clinical Practice for Irritable Bowel Syndrome in East Asian Countries

Aim: Sociocultural factors are important because their different effects on the features of irritable bowel syndrome (IBS) between countries will provide clues towards solving this problem. The aims of this study were to depict the clinical realities of IBS in East Asian countries and test the hypothesis that the diagnosis and treatment of IBS differ between countries. Subjects and Methods: Study participants were 251 physicians involved in the clinical practice of IBS at major institutions in Japan, South Korea, China, the Philippines, Indonesia and Singapore. The questionnaire contained 45 questions focused on the clinical practice of IBS. Results: Subjects in Japan, South Korea, China, Indonesia, the Philippines and Singapore accounted for 55.4, 17.9, 8.8, 8.0, 6.4 and 3.6% of the study cohort, respectively. Amongst East Asian physicians, the most important symptom was considered to be abdominal pain by 33.4%, whilst 24.3% regarded alternating diarrhea and constipation to be the most important symptoms. Total colonoscopy and histopathology use showed no difference among countries. Prescriptions given for mild (p < 0.0001), moderate (p < 0.0001), severe (p < 0.0001), intractable (p = 0.002), diarrheal (p < 0.0001) and constipating (p < 0.0001) patients with IBS significantly differed between the countries. Except for several minor points, IBS specialists showed no significant difference in their diagnosis and treatment of IBS when compared to nonspecialists. Conclusion: This survey provided data on the clinical treatment of IBS among East Asian countries. The results supported the hypothesis that the diagnosis and treatment of IBS differs between countries.

The Causes of Upper Gastrointestinal Bleeding in the National Referral Hospital: Evaluation on Upper Gastrointestinal Tract Endoscopic Result in Five Years Period

Backgrounds: Gastrointestinal bleeding such as hematemesis or melena are common conditions in clinical practice and endoscopic service. The mortality rate due to gastrointestinal bleeding is relatively high. In this study, we evaluate the causes of hematemesis melena for the last 5 years and the factors associated with the bleeding. Methods: The study was done retrospectively. We obtained data from medical record of patients that performed endoscopy of upper gastrointestinal tract in Division of Gastroenterology, Department of Internal medicine, Cipto Mangunkusumo hospital (Jakarta, Indonesia) during the period of 2001 to 2005. Results: Of 4.154 patients who underwent upper gastrointestinal tract endoscopy from 2001 to 2005, we found that 837 patients (20.1%) were due to upper gastrointestinal bleeding. They were 552 male (65.9%) and 285 female patients (34.1%). Mean age of male patients was 52.7 ± 15.82 years, while for female patients was 54.46 ± 17.6 years. Of 837 patients who came due to hematemesis were 150 patients (17.9%), melena were 310 patients (37.8%), both melena and hematemesis were 371 patients (44.3%), 557 cases (66.5 %) due to non varices. Endoscopic results showed that 280 cases (33.4%) were due to esophageal varices. In general, this study had demonstrated that esophageal varices was the most frequent cause of upper gastrointestinal bleeding. We found 229 cases of esophageal varices were coincidence with portal hypertensive gastropathy. While ulcer was found in 225 cases (26.9%) and most of them were gastric ulcer (51.1%). Of gastrointestinal bleeding caused by esophageal varices, most were grade III in 138 cases (49.3%). The incidence of bleeding of bleeding were found more frequently in patients age group of 40 - 60 years (389 cases; 46.5%), > 60 years (305 cases; 36.2%), 60 years, most were caused by ulcer (37.4%). In this study, we also found that cancer as the cause of gastrointestinal bleeding in 26 cases (3.1%). Gastrointestinal cancer comprised of gastric cancer in 15 cases (57.7%), duodenal cancer in 7 cases (26.9%), and esophageal cancer in 4 patients (15.4%). Conclusion: The most frequent cause of upper gastrointestinal bleeding was esophageal varices and usually had reached stage III. The non variceal cause of bleeding was gastric cancer. Upper gastrointestinal malignancy was also found to be the etiology of bleeding in this study. Keywords : upper gastrointestinal bleeding, endoscopy