Right ventricle


Pumps oxygen poor blood through the pulmonary artery to the lungs for oxygenization.

Pumps blood at lower pressures than the left ventricle, with thinner walls measuring less than 0.5cm.

Shaped like a crescent and located in front of the left ventricle and directly under the sternum.

It is the most anterior heart chamber.

The ratio of the diameter of the right ventricle to that of the left ventricle of greater than 0.9 indicates strain on the right side of the heart, implying signs of overload on the right side.

The right ventricle is normally part of a low pressure system, with systolic ventricular pressures that are lower than those that the left ventricle normally encounters.

The right ventricle and left ventricle are integrated anatomically and physiologically to the interventricular septum, with the right ventricle, depending on the left ventricle for a substantial portion of its contractile function.

The helical orientation of the muscle fibers in the septum produces primarily a longitudinal contractile pattern, whereas the circumferential fibers in the right ventricular wall contribute a transverse shortening pattern.

The right ventricle cannot cope as well with higher pressures, and although right ventricular adaptations of hypertrophy and increased contractility of the heart muscle, initially help to preserve stroke volume, ultimately these compensatory mechanisms are insufficient; the right ventricular muscle cannot get enough oxygen to meet its needs and right heart failure follows.

As the blood flowing through the lungs decreases, the left side of the heart receives less blood.

This blood may also carry less oxygen than normal.

Therefore, it becomes harder and harder for the left side of the heart to pump to supply sufficient oxygen to the rest of the body, especially during physical activity.

Right ventricle dysfunction can predict mortality in heart failure patients independent of left ventricular function.

Tricuspid annular planar systolic excursion is one of the best methods to estimate right ventricular systolic function.

Tricuspid annular planar systolic excursion Is measured as the extent of movement of the tricuspid lateral annulus from M-mode echocardiographic studies through the annulus in the apical 4 chain review: A value greater than 14-15 mm and a doubling of the tricuspid annular plantar systolic excursion measurement predicts improved mortality independent of left ventricular ejection fraction.

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