RT Book, Section A1 Kory, Pierre A1 Kaplan, Adolfo E. A2 Carmody, Kristin A. A2 Moore, Christopher L. A2 Feller-Kopman, David SR Print(0) ID 56301450 T1 Chapter 15. Ultrasound for Deep Venous Thrombosis 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=56301450 RD 2024/10/10 AB Deep venous thrombosis (DVT) is typically caused by one or more of Virchow's triad: stasis, hypercoagulability, and/or endothelial damage. DVT may occur in ambulatory patients presenting to the emergency department (ED) with leg pain and/or swelling, and is also a frequent complication of critical illness due to multiple and often coexisting risk factors, including immobility, surgery, trauma, indwelling devices, malignancy, and inflammatory states. A vexing problem is the unreliability of the symptoms and signs of DVT in the critical care setting, which are often limited by obesity, edema, and surgical dressings. In the intensive care unit (ICU), 10%–100% of DVTs are clinically unsuspected, and pulmonary embolism is the most frequent incidental autopsy finding, directly contributing to death in approximately 5% of all cases.