Tricuspid valve

The tricuspid valve sits between right atrium and right ventricle. Read more about this heart valve!

Tricuspid valve

The tricuspid valve is one of the four heart valves. It sits between the right atrium and the right ventricle and here as an inlet valve ensures that the blood can only flow from the atrium into the ventricle. Sanitary problems with the valve can disturb the blood flow. Find out everything important about the tricuspid valve here!

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tricuspid valve

  • Tricuspid valve: Three-pointed sail flap

  • Common problems Tricuspid valve

Tricuspid valve: Three-pointed sail flap

As a tricuspid valve, doctors refer to the heart valve between the right atrium and the right ventricle (ventricle). It consists of a duplication of the inner endocardium (endocardium) and is a so-called sail flap: It consists of three corners (sails), whose free ends are connected by tendon strands with the papillary muscles. These are small protuberances of the inner wall of the ventricle. The tendon cords ensure that the valve leaflets do not strike back into the atrium during contraction of the ventricle (systole) and the resulting high pressure. Instead, at the beginning of systole, the fine edges of the valve leaflets are firmly attached to each other so that the passage to the atrium is sealed. This ensures that no blood can flow from the ventricle back into the atrium. During the following diastole (relaxation of the ventricle) the tricuspid valve opens in the direction of the ventricle and this fills with the blood from the atrium.

Read also

  • AV node
  • aorta
  • aortic valve
  • artery
  • blood vessels
  • blood circulation
  • heart
  • heart valves
  • Coronary artery
  • Heartbeat

Common problems Tricuspid valve

The tricuspid valve is less affected by valvular defects than the mitral valve located in the left heart between the atrium and the ventricle. But here, too, it can, for example, to a Klappenstenose (constriction of the flap) come, the so-called Trikuspidalstenose. The filling of the right ventricle during diastole is impaired by the narrowing. The right atrium expands (dilatation). Tricuspid stenosis is rarely isolated: it is most common with other valve defects, most commonly associated with mitral stenosis.

In tricuspid regurgitation, the valve does not close tightly during systole. This valve weakness is rarely innate. It is usually the result of an expansion (dilatation) of the right ventricle. This, in turn, can be caused by a variety of conditions, such as pulmonary hypertension (pulmonary hypertension) or left ventricular valve disease (such as mitral stenosis). Occasionally, the leakage of the tricuspid valve, for example, due to a rheumatic underlying diseases or a bacterial inflammation of the inner lining (endocarditis).

In rare cases, children come without one tricuspid valve to the world, what is called tricuspid atresia.

High blood pressure can be dangerous. See here how you can measure the values ​​yourself.


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