The goal of this clinical trial is to learn if drug Vardenafil works to treat pulmonary hypertension in newborns, It will also learn about the safety of Vardenafil. The main questions it aims to answer are: Does Vardenafil lower the pulmonary hypertension in newborns? What medical problems do participants have when taking Vardenafil? Researchers will compare drug Vardenafil to drug Sildenafil to see if drug Vardenafil works better to treat pulmonary hypertension. Participants will be divided into 2 groups , one group will take oral drug: Vardenafil and the other group will take oral drug: Sildenafil every day. Pulmonary hypertension will be measured daily until it returns to normal. Keep a diary of the symptoms and any complications
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Pulmonary Hypertension
Timeframe: Pulmonary hypertension is evaluated for each participant at time of diagnosis before taking the drug = day 0, then every 24 hours until obtaining normal measurement (up to day 4)
Pulmonary Resistance
Timeframe: Pulmonary resistance is evaluated for each participant at time of diagnosis before taking the drug = day 0, then every 24 hours until obtaining normal measurement (up to day 4)