highly significantp < 0.001
In CTEPH patients, there was a highly significant association between the PA diameter and the duration of symptoms ( r = 0.442, p < 0.001).
In CTEPH patients, there was a highly significant association between the PA diameter and the duration of symptoms ( r = 0.442, p < 0.001).
There was no correlation between PA diameter or PA ratio and symptom duration in patients with CHD‐PAH or CTD‐PAH, although there was a marginally significant correlation in IPAH patients ( r = 0.286, p < 0.001).