Persistence of iASD after M-TEER
iASD has been described to persist in 27% to 35% of patients at 6 to 12 months when assessed by TTE and in 42% to 50% of cases when using TEE as a more sensitive method [The prevalence of iASD might be underestimated when using TTE imaging. Importantly the geometric characterization is only sufficiently possible with 3D TEE [