A special catheter with a balloon in the tip is used to create or enlarge an opening in the atrial septum (wall between the left and right atria).
用一根顶端带有气囊的特殊的导管在房间隔(左心房和右心房之间的壁)上造一个口。
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Figure 7: Axial image from CT cisternogram demonstrates intrathecal contrast leaking into the expanded right sphenoid sinus along the septum (orange arrow).
图7：轴位CT脑池造影显示硬膜下造影剂沿着中隔渗漏到扩张的右侧蝶窦腔内。
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Objective:To compare the cardiac function impact by right ventricular septum pacing and right ventricular apex pacing.