Transvenous left atrial and left ventricular pacing in Ebstein's anomaly with severe interatrial conduction block

The implantation of permanent pacemakers in patients with congenital heart disease can be challenging. This report describes the complexity of pacemak er implantation in a patient with Ebstein's disease, tricuspid valve replac ement, and right atrial abnormalities like severe intra- and interatrial co nduction block that prevented dual chamber pacing from conventional sites. This case illustrates the promising possibility to circumvent the interatri al conduction block with single left atrial pacing instead of biatrial paci ng which was not suitable here.