patients who are more than 18 years old , diagnosed with pulmonary hypertension by echocardiography

All the patients will be subjected to thorough medical history and clinical examination and the results of the previous investigations will be collected aiming for reaching the diagnosis of the etiology of pulmonary hypertension. ct pulmonary angiography and then right heart catheterization will be done in case of undiagnosed etiology.

We will diagnose the cause of pulmonary hypertension in each participant. This will be done by following the diagnostic algorithm of European Society of Cardiology/ European Respiratory Society (ESC/ERS) 2015 guidelines (e.g. we will exclude that pulmonary hypertension is secondary to pulmonary disease by performing adequate assessment of the patient medical history and clinical examination, performing chest x-ray and or high resolution CT chest, spirometry...), so we will know the pattern of pulmonary hypertension etiology in patients attending of Sohag university hospital