Why the study?
Does the historical NIH equation accurately predict contemporary survival in patients with pulmonary arterial hypertension?
Does the historical NIH equation accurately predict contemporary survival in patients with pulmonary arterial hypertension?
Contemporary survival in pulmonary arterial hypertension is significantly better than predicted by the historical NIH registry equation, leading to the development of a new prognostic equation.
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Contemporary PAH survival exceeds NIH predictions; challenges historical equations and leaves open validation of updated models.
Thenappan et al. (2009) studied this question.
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