Fig. 2From: Agitated saline test as a simple but reliable method of intraoperative diagnosis and evaluation of unroofed coronary sinusSchema showing surgical procedure of direct closure of unroofed coronary sinus fistula. The cardiac surgeon reached the left atrium through right atrial and atrial septal incisions, and the fistula was closed directly. CS, coronary sinus; URCS, unroofed coronary sinusBack to article page