Table 4.
Yield of TTE abnormalities
| TTE classification | Normal | Incidental | Abnormal: minor | Abnormal: moderate | Odds ratio (95% CI) |
|---|---|---|---|---|---|
| Overall yield | 68.6% (n = 253) | 11.7% (n = 43) | 14.9% (n = 55) | 4.9% (n = 18) | |
| TTE yield by AUC appropriateness for all encounters | 1.2 (0.7–2.0) | ||||
| Appropriate | 73.1% (n = 147) | 3.0% (n = 6) | 17.9% (n = 36) | 6.0% (n = 12) | |
| May be appropriate | 97.0% (n = 32) | 0.0% (n = 0) | 3.0% (n = 1) | 0.0% (n = 0) | |
| Rarely appropriate | 52.7% (n = 68) | 28.7% (n = 37) | 14.0% (n = 18) | 4.7% (n = 6) | |
| Unclassifiable | 100.0% (n = 6) | ||||
| TTE yield by AUC appropriateness for murmur evaluations | 3.8* (2.0–7.3) | ||||
| Appropriate | 45.7% (n = 37) | 2.5% (n = 2) | 40.7% (n = 33) | 11.1% (n = 9) | |
| Rarely appropriate | 43.0% (n = 43) | 35.0% (n = 35) | 17.0% (n = 17) | 5.0% (n = 5) | |
| TTE yield by age group for rarely appropriate murmur evaluations | 14.6* (1.9–114.2) | ||||
| Birth to 3 months | 25.4% (n = 17) | 43.3% (n = 29) | 23.9% (n = 16) | 7.5% (n = 5) | |
| 4 to 11 months | 71.4% (n = 15) | 23.8% (n = 5) | 4.8% (n = 1) | ||
| 12 months to 18 years | 91.7% (n = 11) | 8.3% (n = 1) | |||
AUC appropriate use criteria, TTE transthoracic echocardiogram
*
Statistically significant difference