You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Primary pulmonary hypeension has following features on ECG except- and explain in detail?
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