Comparison of the accuracy between fundamental and second harmonic imaging during dobutamine stress echocardiography for the detection of myocardial viability
| Variable |
Fundamental imaging (n (%)) | 95% CI |
Second harmonic imaging (n (%)) | 95% CI | p Value |
| Sensitivity for dysfunctional segments2-150 | 73% (144/198) | 68 to 78 | 87% (138/158) | 83 to 91 | 0.001 |
| Specificity for dysfunctional segments2-150 | 86% (113/132) | 82 to 89 | 90% (117/130) | 86 to 94 | 0.40 |
| Accuracy for dysfunctional segments2-150 | 78% (257/330) | 73 to 82 | 89% (255/288) | 85 to 92 | 0.001 |
| Sensitivity for akinetic/dyskinetic segments2-160 | 75% (60/80) | 68 to 82 | 90% (54/60) | 85 to 95 | 0.06 |
| Specificity for akinetic/dyskinetic segments2-160 | 84% (85/101) | 78 to 90 | 84% (78/93) | 78 to 90 | 0.90 |
| Accuracy for akinetic/dyskinetic segments2-160 | 80% (145/181) | 74 to 86 | 86% (132/153) | 81 to 92 | 0.20 |