1 INTRODUCTION
The diagnosis of leg malperfusion caused by dynamic obstruction after aortic dissection is difficult because the dissection flap remains unstable and often causes changes in symptoms. We herein report a case of leg malperfusion caused by dynamic obstruction after aortic dissection diagnosed by the exercise ankle brachial pressure index (Ex-ABPI) test. We believe that this test is more objective and useful than the methods used for making a diagnosis in previous reports.1,2 Furthermore, the present case demonstrated a unique feature of the relationship between leg malperfusion and blood pressure (BP).