The study found that 24 percent of the patients had been misdiagnosed: 22 patients previously diagnosed with epilepsy were found to have nonepileptic seizures, and four patients previously diagnosed with nonepileptic seizures were found to have epileptic seizures.
The purpose of valves is to prevent back flow of blood. In other words, it ensures that blood flows only in one direction . An atrioventricular (AV) valve is a valve located in the heart between the atria and the ventricles. In the right side of the heart, the AV valve is called the tricuspid valve . On the left side of the heart, the AV valve is called the mitral valve .
The AV valves are found between the atria and the ventricles of the heart. There are two of them, one on the right side of the heart and one on the left side. Their function is to close to allow blood to flow and fill the atria from veins, and then to open when the atria contract, thereby allowing the blood to flow into the two ventricles.