CVS Practice Test

What is the area of the mitral valve?

1. 2-3 cm2

2. 4-6 cm2

3. 6-8 cm2

4. 8-10 cm2

The correct answer is: 4-6 cm2

The area of the mitral valve is typically between 4 to 6 square centimeters in adults. This range is important for understanding normal cardiac function and the effectiveness of blood flow from the left atrium to the left ventricle. An optimal mitral valve area is crucial for maintaining hemodynamic stability, as it influences the pressure gradient and volume of blood passing through the valve during each heartbeat. When considering the ranges provided, the choice that states 4-6 cm² corresponds to the normal physiological range for a functioning mitral valve. Values below this range can indicate mitral stenosis, which can lead to left atrial pressure increase and subsequent complications. In contrast, significantly larger areas are typically not seen in healthy individuals, as they may suggest a dilated mitral valve or other pathological conditions. Thus, acknowledging the normal anatomical dimensions of the mitral valve is essential for medical professionals in order to assess cardiac health accurately and diagnose potential diseases.