Coronary Sinus Ostial Obstruction in Single-Ventricle Congenital Heart Disease: Two Patients With Different Outcomes

Coronary sinus ostial obstruction is an exceedingly rare anomaly that is particularly important to diagnose in patients with single-ventricle heart disease before surgical palliation. We present 2 cases, an infant and an adult, diagnosed with coronary sinus ostial obstruction, with different clinical outcomes due to timing of diagnosis. (Level of Difficulty: Intermediate.)

Coronary Sinus Lead Placement in Patients With Coronary Sinus Ostial Atresia: An Innovative Approach

This case series demonstrates 2 innovative approaches to successful coronary sinus lead placement in the setting of coronary sinus ostial atresia. Use of venous phase coronary angiography, a computed tomography scan with venous phase, or a left-sided upper extremity venogram may help reveal a variant anatomy and guide tool selection. (Level of Difficulty: Advanced.)

Coronary sinus ostial atresia with persistent left superior caval vein in a patient with congenitally corrected transposition of the great arteries

We present a case of a 57-year-old man with congenitally corrected transposition of great vessels who was found to have coronary ostial atresia with cranial flow through left superior vena cava on CT with contrast injection in coronary tributaries. As such, he was ineligible for cardiac resynchronization therapy.