Inhaled nitric oxide is used -

Ans. is 'd' i.e., For reducing pulmonary hypeension According to Goodman Gilman "Inhaled nitric oxide has been approved by FDA for use in newborns with persistent pulmonary hypeension and has become the first line therapy for this disease. In this disease state NO inhalation has been shown to reduce, significantly, the necessity for extracorporeal oxygenation"