Objective.--To describe a case of axillary artery embolus detected by emergency physician? performed bedside ultrasound. Case Report.--A patient presented with a possible stroke but was diagnosed correctly with acute axillary artery embolus. The axillary artery embolus was detected by the emergency physician by the use of bedside ultrasound. Results.--An acute axillary artery embolus was detected rapidly by emergency physician-performed bedside ultrasound. This led to rapid definitive vascular surgical care. Conclusion.--Rapid bedside emergency ultrasound of the upper extremity arterial system can accurately detect life- and limb-threatening pathology and expedite, as this case demonstrates, definitive limb-saving surgical care.