The way Viagra works, is to better the flow of blood that circulates around the human body by making grow the level of a protein known as phosphodiesterase 5 that is found in the phallus and restricts the arteries in that area. Nevertheless, this protein is also located in two other zones of the human body, the lungs and the right ventricle of the heart. Pulmonary hypertension affects the flow of blood to the lungs, therefore restricting the arteries and pulling the right ventricle of the heart. It is similar in diagnosis to high blood pressure, but the additional exercise the heart is obliged to do to pump the protein around the human body in the blood often leads to weariness, shortness of breath and in extreme cases can bring about death of the patient. Having blood hypertension is easily manageable, and with the right drug patients can increment their lifespan by approximately twenty years. However, if a patient suffers from pulmonary hypertension, their life span is significantly decreased. In the most serious of cases, a patient might only have three years without the adequate drugs, and this has a hurtful effect on their quality of life. No real testing was executed with this medical state, as it was difficult to determine. Then, in 2002 experiment was executed on several patients who were suffering from this state. PreviousPrior tests with other drugs was focused on healthy hearts, and did not get successful outcome because it was difficult to strengthen the right ventricle combining with reducing blood pressure and relaxing the lungs. This experiment involved giving patients measured amount of Viagra, and lead to unexpected results. Viagra was proved to be very successful in improving the heart function of patients who have a diseased right ventricle, and reduced the hypertension in their lungs. Because Viagra is a completely secure and natural drug that handles the chemical disbalance in the blood run, doctors at Glasgow’s Yorkhill Children’s Hospital gave this medication to infants who suffered from severe pulmonary hypertension. The outcome was astounding. Many of these babies would not have survived without this implementation of Viagra, and the therapy has provided a breakthrough with making better patient medication. Viagra is also helpful 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 famous and successful therapy in cases such as erectile dysfunction, and now it has been proved to be successful in therapy for pulmonary hypertension. Expanding the blood vessels and easing the breathing difficulties of the patient is a modern breakthrough. Because Viagra has no notable side effects, it can now be given to many patients of all ages who experience various blood related medical conditions.