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Figure 3 Selected frames from a cineradiogram obtained during an over-the-wire implantation of a fourth generation buttoned device across the atrial septum. a) and b) Postero-anterior views showing an Amplatz guide wire (AW) positioned into a left pulmonary vein. The occluder is delivered into the left atrium (a) with tip of the sheath (Sh) in the right atrium. Radiopaque buttons (B) and loading wire (LW) are seen within the sheath. b) The counter-occluder (COc) is delivered into the right atrium and buttoned. Note that the radiopaque wire of the COc is past the radiopaque buttons.
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