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Table 3 Parameters of CMR flow session

From: Cardiovascular magnetic resonance assessment of acute cardiovascular effects of voluntary apnoea in elite divers

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
  1. CCA common carotid artery; p-values for begin apnoea vs. end of apnoea, SD standard deviation, Q mean mean flow