The way Viagra works, is to make better the flow of blood that runs around the body by increasing the level of a protein known as phosphodiesterase 5 that is located in the phallus and restricts the arteries in that area. But, this protein is also found in two other areas of the body, the lungs and the right ventricle of the heart. Pulmonary hypertension affects the blood run to the lungs, thus constricting the arteries and pulling the right ventricle of the heart. It is similar in diagnosis to high blood pressure, but the additional work the heart must do to pump the protein around the human body in the blood often is the reason of fatigue, short-wind and in extreme cases can bring about death of the patient. Having high blood pressure is easily controlled, and with the adequate treatment patients can increment their life by more or less twenty years. Nevertheless, if a patient has pulmonary hypertension, their life is greatly decreased. In the extreme cases, a patient may only have 3 years without the adequate medicine, and this has a damaging result on their life quality. No essential test was executed with this medical state, as it was hard to identify. Then, in 2002 experiment was executed on a number of patients who sufered from this condition. PreviousPrior tests with other treatment focused on healthy hearts, and did not get successful results because it was difficult to strengthen the adequate ventricle combining with lessening blood pressure and relaxing the lungs. This experiment involved giving patients controlled dosage of Viagra, and lead to amazing outcome. Viagra was proved to be highly successful in improving the heart function of patients who have a stressed right ventricle, and reduced the hypertension in their lungs. Because Viagra is absolutely safe and plain medication that works with the chemical disbalance in the blood run, doctors at Glasgow’s Yorkhill Children’s Hospital prescribed this medication to babies who were suffering from extreme pulmonary hypertension. The result was surprising. Many of these children would not have made it without this implementation of Viagra, and the therapy has resulted in a breakthrough with improving patient medication. Viagra is also useful in situations such as lung transplant surgery, where the right ventricle can often collapse if the lung is rejected. Viagra is thought to be one of the most popular and successful therapy in states such as erectile dysfunction, and now it has been proved to be successful in treating pulmonary hypertension. Expanding the blood vessels and easing the breathing troubles of the patient is a modern breakthrough. Because Viagra has no evident side effects, it can now be prescribed to many patients of all ages who experience different blood related medical conditions.