Chapter 32

Management of Iatrogenic Interatrial Septal Defect—To Close or not to Close?

Christina Tan

Christina Tan

Division of Cardiology, Kaiser Permanente, Honolulu, HI, USA

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James M. McCabe

James M. McCabe

Division of Cardiology, University of Washington, Seattle, WA, USA

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First published: 12 March 2021

Summary

Many transcatheter mitral valve replacements (TMVRs) are performed via percutaneous venous access and require crossing of the intraatrial septum, which creates an iatrogenic atrial septal defect (iASD). This chapter summarizes the relevant hemodynamic principles and known literature regarding persistence and management of iASDs. The echocardiographic evaluation of ASDs by TTE has been previously well-described in the congenital literature. Multiple hemodynamic principles need to be considered relative to iASDs, specifically atrial compliance, ventricular diastolic function, and pulmonary hypertension. Several devices are current approved for closure of atrial septal defects. These include the Amplatzer Septal Occluder, CardioSEAL/STARFlex Septal Occluder, GORE CARDIOFORM Septal Occluder, and ButtonSeal Centering on Demand devices.

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