Gus M Garmel, MD, fAcEP, fAAEM, is a Senior Emergency Medicine Physician at the Santa Clara Medical Center. He is also the Co-Program Director of the Stanford/Kaiser Emergency Medicine Residency Program, and an Associate Professor of Emergency Medicine (Surgery) at Stanford University. E-mail: [email protected]. Figure 3. Compression ultrasound demonstrates a patent popliteal artery (A) in both...