Historical biological theories tend to describe that behaviors are inherited biological tendencies passed down through evolution, and contemporary biosocial theories are explained by saying that genes and other biological features are more facilitators of human behavior instead of determinants.
Like the heart, the LVAD is a pump. One end hooks up to the left ventricle -- that's the chamber of the heart that pumps blood out of the lungs and into the body. The other end hooks up to the aorta, the body's main artery. A tube passes from the device through the skin.
Tricuspid valve regurgitation is a condition in which the valve between the two right heart chambers (right ventricle and right atrium) doesn't close properly. This situation results in blood flowing back into your heart's upper right chamber (right atrium).ricuspid valve regurgitation. In tricuspid valve regurgitation, shown in the heart on the right, the valve between the two right heart chambers (right ventricle and right atrium) doesn't close properly. This situation results in blood flowing back into your heart's upper right chamber (right atrium).