Abstract Arteriosclerotic aortic insufficiency was diagnosed in a series of seventeen patients averaging 67 years of age, with a history of prolonged hypertension. In thirteen the aortic diastolic murmur first appeared while under personal observation. In most instances the advent of the insufficiency had little adverse influence on the prognosis. Aortic insufficiency of arteriosclerotic origin is by no means a rare condition and should be looked for in elderly individuals with chronic hypertension exhibiting a high pulse pressure.