In Superficial Cardiac Dullness?

This is the area of superficial cardiac dullness. ... It is roughly triangular in shape and corresponds to the part of the sternocostal surface of the heart that is both close to the anterior chest wall and not covered by lung.

What is the cause of cardiac dullness?

Right ventricular dilation causes dullness over the sternum at the level of the fifth and sixth ribs, and extends to the left a few inches from the fourth intercostal space to the sixth. It thus encompasses the normal area of dullness and a substernal component.

What is cardiac dullness?

Absolute cardiac dullness is the projection of the anterior surface of the heart, which is not covered by the lungs onto the chest. Absolute cardiac dullness is formed by the right ventricle.