The way Viagra works, is to improve the stream of blood that circulates around the body by increasing the level of a protein known as phosphodiesterase 5 that is found in the penis and presses the arteries in that area. However, this protein is also located in two other areas of the human body, the lungs and the right ventricle of the heart. Pulmonary hypertension influences the blodd stream 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 extra exercise the heart must do to pump the protein around the body in the blood often leads to weariness, dyspnea and in extreme cases can cause death of the patient. Having blood hypertension is easily manageable, and with the right medication patients can increase their lifespan by approximately 20 years. However, if a patient suffers from pulmonary hypertension, their life span is greatly decreased. In the extreme cases, a patient may only have three years without the right treatment, and this has a damaging effect on their quality of life. No essential testing was done with this medical condition, as it was hard to identify. Then, in 2002 experiment was executed on a number of patients who were suffering from this state. PreviousPrior tests with other medication was focused on healthy hearts, and did not achieve successful outcome because it was hard to strengthen the right ventricle in combination with reducing blood pressure and relaxing the lungs. This study included giving patients controlled amount of Viagra, and lead to amazing results. Viagra was identified to be extremely successful in enhancing the heart function of patients who have a diseased right ventricle, and decreased the hypertension in their lungs. Because Viagra is absolutely safe and plain drug that handles the chemical imbalances in the blood run, doctors at Glasgow’s Yorkhill Children’s Hospital prescribed this drug to babies who suffered from severe pulmonary hypertension. The result was astonishing. Many of these children would not have made it without this implementation of Viagra, and the cure has provided a breakthrough with making better patient treatmentmedicine. Viagra is also useful in situations such as lung transplant surgery, where the right ventricle can often fail 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 was proved a success in therapy for pulmonary hypertension. Expanding the blood vessels and alleviating the breathing problems of the patient is a modern breakthrough. Because Viagra has no evident side effects, it can now be given to many patients of all age categories who suffer from various blood related illnesses.