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. 2017 Feb 20;130(4):382–391. doi: 10.4103/0366-6999.199829

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Copyright: © 2017 Chinese Medical Journal

This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.

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Survival curves of patients with CTEPH with a positive and negative response to AVT (n = 175). The curve for AVT responders is blue, whereas that for AVT-nonresponders is green. The follow-up data were analyzed using Kaplan-Meier survival curves and the log-rank test. The survival time in patients with a negative response to AVT was somewhat shorter than that in AVT-responders although the difference was not statistically significant (χ² = 3.613, P = 0.057). AVT: Acute vasoreactivity testing; CTEPH: Chronic thromboembolic pulmonary hypertension.