A 37-year-old woman who was investigated for progressive shortness-of-breath is diagnosed with primary pulmonary hypertension and started on bosentan. What is the mechanism of action of bosentan?
A. Activator of soluble guanylate cyclase
B. Phosphodiesterase type 5 inhibitors
C. Endothelin receptor antagonist***
D. Prostanoid
E. Slow calcium channel blocker.
A. Activator of soluble guanylate cyclase
B. Phosphodiesterase type 5 inhibitors
C. Endothelin receptor antagonist***
D. Prostanoid
E. Slow calcium channel blocker.
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cardiology