TRANSCATHETER TREATMENT OF ANGINA AFTER CORONARY SURGERY DUE TO CONCOMITANT INTERNAL MAMMARY STEAL AND RIGHT CORONARY-ARTERY STENOSIS - A NEED FOR STAGING

Unligated side branches of the internal mammary artery used as a condu it in bypass surgery can be responsible for a flow steal phenomenon, c ausing recurrent angina. In this report we describe such a case, which was treated with a transcatheter embolization technique using coils a s an alternative to surgery. However, heparin administration for simul taneous balloon dilatation of another lesion delayed successful emboli zation. Whenever balloon dilatation and embolization have to be perfor med on the same patient, both procedures should be staged to avoid hep arin administration during and after the embolization procedure. (C) 1 994 Wiley-Liss, Inc.