Completed atrioventricular block induced by atrial septal defect occluder unfolding: A case report

Figure 1 Transthoracic echocardiography showed secundum atrial septal defect with left to right shunt. A: Aortic root short axis view; B: Parasternal four chamber views; C: Subxiphoid biatrial view.

Figure 2 Three-dimensional transthoracic echocardiography showed the atrial septal defect rendered morphology of the atrial septal defect is oval and next to the aortic root.

Figure 3 Electrophysiological map. A: The ST duration elevated when the occluder disc unfolded; B: Completed atrioventricular block; C: The ST duration fell to normal levels, and the atrioventricular block was not recovered when the occluder retreated; D: Sinus rhythm come back about 10 min later.