Mid-term prognosis and risk stratification in patients with post-operative pulmonary hypertension: Insights from the Japanese Association of Congenital Heart Disease Registry (JACPHR).

The overall log-rank test was highly significant ( p <0.001), and pairwise comparisons also demonstrated substantial differences between the low- and moderate-risk groups ( p = 0.006) and between the moderate- and high-risk groups ( p = 0.016).

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