Pulmonary hypertension :
When hypertension is present in the pulmonary artery, it is called pulmonary hypertension. As a result of pulmonary hypertension, the pulmonary arteries get narrowed, resulting in the heart and lungs working harder to pump the blood. Environmental factors, exposure to certain chemicals, any underlying disease like congenital heart disease, mitral valve disease, or obstructive sleep apnea play an important role in developing pulmonary hypertension. Pulmonary hypertension should not be left untreated. Some of the symptoms of pulmonary hypertension include chest pain, dizziness, fatigue, swelling in the ankles and feet, shortness of breath during some activities. Symptoms may be worse if the disease has progressed. Diagnosis is made by careful history taking and physical examination, as pulmonary hypertension can mimic other diseases, too. Investigations like echocardiogram, right heart catheterization, CT scan, chest X-ray, polysomnogram, some basic blood investigations may be advised. Treatment for pulmonary hypertension includes diuretics, calcium channel blockers, oxygen therapy, and anticoagulants. A procedure like pulmonary endarterectomy may also be advised.