We describe a simple and safe technique for achieving retrograde cereb
ral perfusion via a small coronary sinus type catheter placed in the s
uperior vena cava. This method is especially useful when the need for
circulatory arrest is first recognized intraoperatively and a single t
wo-stage venous cannula has already been placed for cardiopulmonary by
pass. The advantages of this technique over other currently employed m
ethods for retrograde cerebral perfusion are discussed.