All are used for the treatment of pulmonary hypeension EXCEPT:: (A) Endothelin receptor antagonists, (B) Phosphodiesterase inhibitors, (C) Calcium channel blockers, (D) Beta blockers
Answer is D. CCBs, ET antagonists are used in Pul.HTN apa from PGI2 analogues and PDE5 inhibitors No- nitric oxide - only therapeutic use is Pul. HTN in newborn betablockers- no role Ref: KD tripathi 8th ed.