The nurse is caring for a patient whose damaged ventricle is reducing left ventricular filling and causing a backup of blood into the left atrium. What valve is damaged in this patient?
A) Mitral
B) Pulmonic
C) Aortic
D) Tricuspid
A
Feedback:
The valve between the atrium and ventricle on the left side of the heart, called the mitral or bicuspid valve, is composed of two leaflets or cusps that allow the left ventricle to fill with blood and then close to prevent backflow of blood into the left atrium. If this valve is damaged, contraction of the ventricle will push blood back into the left atrium and result in inadequate cardiac output. The pulmonic valve is located between the right ventricle and pulmonary artery. The aortic valve allows blood to flow from the left ventricle into the aorta. The tricuspid valve is the valve between the right atria and ventricle.
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