Transthoracic echocardiogram with bubble study post-procedure. Transthoracic echocardiogram and bubble study conducted after the closure procedure showing a negative bubble study and the occluder device in the correct location.Beats per minute (BPM), Left atrium (LA), Left ventricle (LV), Patent foramen ovale (PFO), Right atrium (RA), Right ventricle (RV), Valsalva (VAL).