RT Book, Section A1 Osborne, Michael A2 Carmody, Kristin A. A2 Moore, Christopher L. A2 Feller-Kopman, David SR Print(0) ID 56302387 T1 Chapter 27. Approach to the Patient with Undifferentiated Abdominal Pain T2 Handbook of Critical Care and Emergency Ultrasound YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-160489-5 LK accessanesthesiology.mhmedical.com/content.aspx?aid=56302387 RD 2022/05/21 AB Abdominal pain is one of the most common complaints encountered in the acute care setting. Undifferentiated abdominal pain can be one of the most challenging conditions that a physician encounters on a daily basis. The decision regarding which labs or radiological tests to order can be frustrating and often unrevealing. Particularly in elderly patients, a difficult history and often inaccurate and changing physical examination can complicate the decision-making process.