The most common cause of a pulmonary embolism is a blood clot (thrombus) in a large leg vein of the leg that breaks off and travels to the lungs (embolus).An embolus may be from clots in other parts of the body.Or they may be made up of other solids, liquids, or gases that travel to the lungs.he most common cause of a pulmonary embolism is a blood clot (thrombus) in a large leg vein of the leg that breaks off and travels to the lungs (embolus).
Diuretics are used in pulmonary hypertension to manage peripheral edema. The use of loop diuretics (eg, furosemide, bumetanide) requires potassium supplementation and close monitoring of serum potassium.
It may be defined as a pulmonary artery systolic pressure greater than 30 mm Hg or a pulmonary artery mean pressure greater than 20 mm Hg. The etiology of primary pulmonary hypertension is unknown. Secondary pulmonary hypertension can be a complication of many pulmonary, cardiac and extrathoracic conditions.rimary pulmonary hypertension is a rare disease of unknown etiology, whereas secondary pulmonary hypertension is a complication of many pulmonary, cardiac and extrathoracic conditions.