“…Careful attention is paid to left atrial pressure and the maintenance of a normal serum potassium level. If IABP is needed postoperatively, the patient is slowly weaned off IABP when the left atrial pressure can be maintained at 20 mm Hg or less and there is clinical evidence of adequate cardiac Accepted for publication April 3,1974 Figure) with ages ranging from 51 to 68 years, were seen in acute left ventricular failure 11 to 63 days following in¬ farction. In each, medical therapy was unsuccessful.…”