RT Journal Article SR Electronic T1 Approach to managing undiagnosed chest pain JF Canadian Family Physician JO Can Fam Physician FD The College of Family Physicians of Canada SP 261 OP 266 VO 53 IS 2 A1 Nigel Flook A1 Peter Unge A1 Lars Agréus A1 Björn W. Karlson A1 Staffan Nilsson YR 2007 UL http://www.cfp.ca/content/53/2/261.abstract AB OBJECTIVE To highlight gastroesophageal reflux disease as a commoncause of undiagnosed chest pain. SOURCES OF INFORMATION Diagnostic considerations are based on information in peer-reviewed articles retrieved from MEDLINE. Studies had to be in English and involve at least 30 subjects. Population-based studies had to have a sample size of at least 300 and a response rate of at least 60%. Thirty-seven relevant articles were found. MAIN MESSAGE Clinical management of patients presenting with diagnostically challenging chest pain starts with a careful search for coronary artery disease and other potentially life-threatening causes. Investigations must continue until the underlying disease is identified and symptoms have been effectively controlled. Ongoing symptoms of undiagnosed chest pain cause considerable suffering, impair quality of life, and add unnecessary costs to the health care system. In more than half the patients with undiagnosed chest pain, symptoms are caused by gastroesophageal disease. Empirical acid-suppressive therapy with a proton pump inhibitor can assist clinicians in identifying patients whose symptoms are acid-related. CONCLUSION Many patients with undiagnosed chest pain can be managed in primary care, minimizing the need for referrals and costly investigations.