Table 4.
Subgroup analysis
| Idiopathic PAH | PAH- congenital heart disease | P Value | World Health Organization Classes I + II | World Health Organization Classes III + IV | P Value | |
|---|---|---|---|---|---|---|
| n | 20 | 15 | 26 | 14 | ||
| FCW(i), mm5·s−1·ml−1 | 88 (75–154) | 102 (54–165) | 0.880 | 87 (52–158) | 101 (76–152) | 0.6407 |
| BCW(i), mm5·s−1·ml−1 | 32 (25–57) | 32 (17–72) | 0.972 | 31 (17–44) | 44 (27–110) | 0.1499 |
| FDW(i), mm5·s−1·ml−1 | 35 (20–61) | 32 (21–56) | 0.413 | 29 (18–59) | 33 (21–50) | 0.2235 |
| c-MPA, m/s | 3.3 (2.0–4.5) | 3.0 (2.5–3.7) | 0.765 | 3.0 (2.0–4.3) | 3.4 (2.2–5.6) | 0.869 |
Values are medians with the corresponding interquartile ranges in parentheses; n is the number of subjects. PAH, pulmonary arterial hypertension; FCW(i), indexed forward compression wave; BCW(i), indexed backward compression wave; FDW(i), indexed forward decompression wave; c-MPA, wave speed/pulse wave velocity of the main pulmonary artery.