Primary pulmonary hypeension has following features on ECG except-

Primary pulmonary hypeension (PPH) is high blood pressure in the lungs. It's a rare lung disorder in which the blood vessels in the lungs narrow and the pressure in the pulmonary aery rises far above normal levels In pulmonary hypeension, the electrocardiogram (ECG) may demonstrate signs of right ventricular hyperophy, such as tall right precordial R waves, right axis detion and right ventricular strain,St segment elevation is seen Ref Davidson 23rd edition pg 453