What is sinus venosus?
Sinus venosus is an embryonic structure that later becomes part of the heart. Errors in creating this structure and subsequent development into cardiac tissue can cause the type of atrial septum defect (ASD) known as Sinus venosus for the structure. In patients with this type of congenital abnormality, blood passes freely between the upper chambers of the heart called the right and left atriums. This allows deoxygenated venous blood to mix with freshly oxygenated arterial blood that can cause a problem. They migrate the body of the embryo to take their positions so that they can start to grow into bones, organs and other tissues in the body. This process is extremely complex; In humans, it takes 40 weeks for the body to fully develop.
As one of the nichstructures that become part of the heart, Sinus venosus migrates into the chest area and begins to evolve. Over time, it moves slightly and the cells become more advanced. Throughout the process is fed by a series of blood vessels that supply nutrients with corresponding blood vesselsThey remove cellular waste. Missing may occur due to environmental pressures, random jokes of cell division or genetic diseases, sometimes causing a defect of sinus venosus.
Such defects are located near an area that was once Sinus Venos. They may have to be treated with surgery to close the hole and improve the patient's heart function, depending on their exact size. Some are demanding in diagnosis that can live with the patient with Sinus Venosus defect for a long time before identifying the problem, usually performing a routine heart evaluation. The diagnosis can be complicated due to the position of the defect, making it difficult to see in the heart imaging studies.
Surgical treatment tends to be the most successful when done before the patient reaches 20 years. It gives the heart time to recover and grow after surgery. After this point it is possible to repair defects, if they have just been identified, but the patient may face an increased risk of side effects and a shorter life expectancy. The untreated sinus venosus defect can lead to a shorter life expectancy overall.