Table 4.
6MWTs divided into groups: good, medium and poor result (data presented as mean ± SD)
| Group | All N = 164 Mean PPD 74.3 ± 12.6% |
Good PPD >80% N = 51 Mean PPD 85.6 ± 5.2% |
Median PPD 60–80% N = 93 Mean PPD 73.8 ± 4.8% |
Poor PPD <60% N = 20 Mean PPD 48.1 ± 10.1% |
p |
|---|---|---|---|---|---|
| Clinical data | |||||
| Shunt | 102 (62%) | 23 (45%) | 64 (69%) | 15 (75%) | <0.01 |
| Age (years) | 13.4 ± 4.0 | 14.7 ± 3.4 | 13.5 ± 3.6 | 9.4 ± 4.6 | <0.01 |
| WHO-FC | 2.2 | 1.9 | 2.2 | 2.9 | <0.01 |
| Rest HR | 80.0 ± 17.7 | 77.2 ± 14.2 | 75.9 ± 13.6 | 106.3 ± 20.7 | <0.01 |
| Rest SAT (%HbO2) | 92.6 ± 6.3 | 93.9 ± 5.7 | 92.8 ± 5.9 | 88.9 ± 8.2 | <0.01 |
| NTproBNP (pg/ml) | 899.9 ± 1946.9 | 431.1 ± 762.2 | 666.9 ± 1952.8 | 3108.5 ± 2495.4 | <0.01 |
| Echo | |||||
| LVDd%N | 90.8 ± 11.5 | 89.5 ± 9.9 | 91.4 ± 12.3 | 90.8 ± 11.6 | NS |
| ΔRV-RA | 94.7 ± 24.7 | 88.7 ± 26.9 | 96.6 ± 25.4 | 96.2 ± 19.3 | NS |
| 6MWT | |||||
| Peak HR | 117.9 ± 24.4 | 114.0 ± 23.3 | 117.2 ± 25.0 | 131.4 ± 20.5 | 0.02 |
| HR% max | 57.1 ± 11.9% | 55.6 ± 11.4% | 56.8 ± 12.4% | 62.5 ± 10.0% | NS |
| ΔHR | 38.6 ± 25.1 | 36.8 ± 24.0 | 42.3 ± 24.1 | 25.5 ± 28.5 | 0.02 |
| Peak SAT (%HbO2) | 80.7 ± 14.6 | 85.5 ± 13.7 | 78.4 ± 14.5 | 78.7 ± 14.6 | 0.01 |
| Desaturation (%HbO2) | 11.8 ± 11 | 7.8 ± 9.7 | 14.4 ± 11.7 | 10.2 ± 9.5 | <0.01 |
Abbreviations description in the text