Table 2.
Distances from sternal notch to the different points on sternum.
| Measurement (cm) | Overall (n = 39) |
Inspiratory Hold (n = 30) |
Expiratory Hold (n = 9) |
Difference | 95% CI | p-Value |
|---|---|---|---|---|---|---|
| DLVmax † | 12.6 (10.6, 13.5) |
12.4 (10.6, 13.4) |
12.7 (10.8, 15) |
NA | NA | 0.527 |
| Sternal length * | 13.8 ± 1.6 | 13.7 ± 1.5 | 14.3 ± 2 | −0.6 | −2.2 to 1 | 0.441 |
| DLH † | 10 (9.5, 11) |
9.89 (9.5, 10.8) |
10.6 (10.2, 11.7) |
NA | NA | 0.334 |
Abbreviations: DLVmax, distance from the sternal notch to the point of maximal left ventricular diameter on the sternum; Sternal length, distance from the sternal notch to the xiphisternal junction; DLH, distance from the sternal notch to the lower half of sternum; NA, not applicable; 95% CI, 95% confidence interval. * mean ± standard deviation and analyzed with unpaired t-test with unequal variance. † median (interquartile range) and analyzed with Wilcoxon rank-sum test.