PREDICTED HYPEREMIC ANGIOGRAPHY - A TECHNIQUE OF DISTAL ARTERIOGRAPHY IN THE SEVERELY ISCHEMIC LEG

Abstract

A technique of distal arteriography in the severely ischemic leg was developed by modifying hyperemic angiography. The postischemic hyperemic response can be measured for a given patient and the time of maximum flow predicted. A study of 35 patients with severe ischemia showed the maximum hyperemic response time (MHRT) to vary greatly among patients. Knowing the specific MHRT in advance enabled an injection of contrast during maximum flow periods. The resulting predicted hyperemic angiograms provided visualization of the pedal arch in 4 extremities not visualized by conventional angiography. Predicted hyperemic angiography appears to provide a means of evaluating calf and pedal circulations in severely ischemic legs prior to surgery.