Key result
In mitral stenosis, 10-20% of patients evaluated by heart catheterization exhibit disproportionately increased pulmonary arterial pressure with low cardiac output (protective pulmonary hypertension).
The text describes the physiological mechanisms of pulmonary hypertension in mitral stenosis, distinguishing passive from active (protective) pulmonary hypertension.
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May warrant specific hemodynamic classification during mitral stenosis catheterization; leaves open effects on prognosis or therapy.
Söderholm et al. (1959) conducted a review in Mitral valvular disease with pulmonary hypertension. Acetylcholine was evaluated. In mitral stenosis, 10-20% of patients evaluated by heart catheterization exhibit disproportionately increased pulmonary arterial pressure with low cardiac output (protective pulmonary hypertension).
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