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Table 1 Resting and peak values during MR-CPET

From: MR-Augmented Cardiopulmonary Exercise Testing- a proof of concept in Sickle Cell Disease (SCD)

Variable Normal Mean (range) Disease Mean (range) P-value
Resting VO2, Lmin-1 0.210 (0.17- 0.25) 0.231 (0.19-0.27) 0.38
Peak VO2, Lmin-1 1.1 (0.9- 1.3) 0.7 (0.56- 0.76) 0 < 0.001**
Resting cardiac output, Lmin-1 6.7 (5.9-7.5) 8.1 (7.1-9.2) < 0.05*
Peak cardiac output, Lmin-1 13 (12-14) 12 (11-13) < 0.05*
Resting stroke volume, mlbeat-1 98 (84-111) 109 (98-119) 0.17
Peak Stroke volume, mlbeat-1 101 (81-120) 116 (105- 27) 0.16
Resting heart rate, bpm 66 (56-77) 77 (72-81) 0.067
Max heart rate, bpm 138 (124-152) 120 (111-129) < 0.05*
Resting tissue extraction, mlO2ml-1blood 0.31 (0.26-0.35) 0.28 (0.24-0.32) 0.34
Peak tissue extraction, mlO2ml-1blood 0.90 (0.79-1.02) 0.51 (0.43- 0.59) < 0.001**