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 .
Four valves are present in the heart to prevent blood from flowing in the wrong direction. Two of these are the atrioventricular (AV) valves between the atria and ventricles. The left AV valve is called the bicuspid (or mitral) valve, while the right AV valve is called the tricuspid valve. The other two are the semilunar valves: one between the right ventricle and the pulmonary artery and the other between the left ventricle and the aorta.