A Comparison of Tei Index Versus Systolic to Diastolic Ratio to Detect Left Ventricular Dysfunction in Pediatric Patients

The overall accuracy, sensitivity, specificity, predictive values, and likelihood ratios of TX are slightly greater than those of S/D for most categories of dysfunction, although either may fail to detect dysfunction in 15% to 18% of cases. When both TX and S/D are used in combination, using the presence of either TX > 0.5 or S/D > 1.0 as indicative of dysfunction, few cases of LV dysfunction should elude detection.