High blood pressure within the arterial blood vessel that conveys blood from the proper ventricle to the lungs. The pressure within the pulmonary artery is often low compared to it within the arterial blood vessel. Pulmonic high blood pressure will irrevocably injury the lungs and cause failure of the proper ventricle. Repiratory organ hypertension is conventionally divided into primary and secondary sorts. Primary pulmonary cardiovascular disease is taken into account idiopathic (of unknown origin). It happens periodically with no case history of the disorder and in an exceedingly familial type. Secondary pulmonary cardiovascular disease could also be attributable to inherent heart condition, embolism, malignant hypertension, scleroprotein vascular disorders (such as lupus), pathology, and HIV infection. The goals of treatment for pulmonary cardiovascular disease area unit to treat the underlying cause, to scale back symptoms and improve quality of life, to slow the expansion of the sleek muscle cells and therefore the development of blood clots; and to extend the provision of blood and oxygen to the heart, whereas reducing its work. Treatments embody medications, oxygen, and respiratory organ transplant. The most medications for pneumonic high blood pressure include :

• Anticoagulants (to cut back the formation of blood clots);
• Calcium channel blockers, that relax blood vessels and increase the availability of blood and oxygen to the heart, whereas reducing its workload;
• Continuous endovenous epoprostenol (prostacyclin presently thought-about the foremost effective therapy) that widens the respiratory organ arteries and prevents grume formation;
• Treprostinil, another prostacyclin, additionally relaxes blood vessels and will increase the provision of blood to the lungs, reducing the work of the heart;
• Bosentan, a comparatively new treatment that widens the respiratory organ arteries and reduces blood pressure;
• Nitric oxide inhalation, that causes the pulmonary arteries to widen or open;
• Viagra (sildenafil) that causes the pulmonic arteries to open; and
• Diuretics which can facilitate ease symptoms and improve the heart’s performance in some patients with pulmonary hypertension.