Table 3.
Parameters of CMR flow session
| Vessel | Parameter | Baseline | Beginning of apnoea | End of apnoea | Mean Difference | SD of mean differences | 95% confidence interval | p-value |
|---|---|---|---|---|---|---|---|---|
| Ascending aorta | stroke volume [ml] | 72.3 ± 17.4 | 63.9 ± 21.3 | 96.3 ± 26.8 | 32.2 | 27.7 | 17.5 to 47.0 | 0.0003 |
| Qmean [ml/s] | 82.9 ± 27.8 | 74.3 ± 25.9 | 101.3 ± 31.3 | 29.5 | 32.2 | 12.3 to 46.7 | 0.0023 | |
| Descending aorta | stroke volume [ml] | 40.8 ± 15.6 | 35.7 ± 16.0 | 41.4 ± 15.2 | 6.0 | 20.4 | −5.3 to 17.2 | 0.2757 |
| Qmean [ml/s] | 45.0 ± 16.3 | 38.2 ± 10.6 | 43.4 ± 15.6 | 1.9 | 18.7 | −9.4 to 13.2 | 0.7173 | |
| Pulmonary trunk | stroke volume [ml] | 71.6 ± 31.1 | 64.6 ± 31.1 | 87.3 ± 31.8 | 38.1 | 40.5 | 10. 9 to 65.3 | 0.0109 |
| Qmean [ml/s] | 76.9 ± 26.5 | 63.5 ± 15.6 | 95.6 ± 28.4 | 45.3 | 32.6 | 21.9 to 68.6 | 0.0018 | |
| Right CCA | stroke volume [ml] | 5.3 ± 1.8 | 8.9 ± 2.4 | 12.1 ± 5.9 | 6.9 | 5.5 | 3.3 to 10.4 | 0.0013 |
| Qmean [ml/s] | 6.1 ± 1.4 | 7.8 ± 2.8 | 11.2 ± 3.5 | 3.4 | 3.1 | −5.0 to −1.8 | 0.0005 | |
| Left CCA | stroke volume [ml] | 5.4 ± 1.7 | 6.8 ± 4.0 | 12.3 ± 6.0 | 6.9 | 5.6 | −8.0 to −2.1 | 0.0022 |
| Qmean [ml/s] | 6.2 ± 1.3 | 7.7 ± 2.3 | 11.7 ± 4.0 | 4.0 | 3.8 | 6.0 to 2.0 | 0.0007 |
CCA common carotid artery; p-values for begin apnoea vs. end of apnoea, SD standard deviation, Qmean mean flow