Intra-atrial

[I]t was only a few years ago that the first diagnosis was made of an intra-atrial septal defect and the first successful surgery to repair the defect was done even more recently.

It took a pulmonary valvotomy and a patch closure of a ventricular septal defect, for starters, not to mention an intra-atrial baffle operation for transposition using extracorporeal circulation.

The hospital was the first in Broward and Palm Beach counties to acquire the Transesophogeal^([sic]) Echo Probe for evaluating prosthetic mitral and aortic valve for dysfunction, intra-atrial thrombi and aortic dissection.