Table 1.

Grading criteria for postoperative transthoracic echocardiograms.

Good	Visualization of the entire RV free wall, including apical, mid, and basal segments throughout the entire cardiac cycle without significant artifact. Minor or no arrhythmias present.
Fair	Visualization of two of three segments of RV free wall throughout majority of cardiac cycle. Mild to moderate imaging artifact and/or arrhythmias may be present.
Poor	Visualization of one or two segments of RV free wall during systolic cycling. Significant imaging artifact and/or presence of arrhythmias common.