Tricuspid valve

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"Tricuspid" redirects here. For the type of tooth, see dental anatomy.
For the semilunar valves, the other two of the three heart valves that are usually tricuspid, see pulmonary valve and aortic valve.
Tricuspid valve
Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow. (Tricuspid valve labeled at bottom left.)
Heart in motion: the anterior walls of the ventricles are removed. The action of the tricuspid valve, located in the right ventricle, is seen on the left portion of this illustration. The three leaflets with their attached chordae tendineae and papillary muscles can be seen.
Details
Identifiers
Latinvalvula tricuspidalis,
valva atrioventricularis dextra
MeSHD014261
TA98A12.1.02.003
TA23982
FMA7234
Anatomical terminology

The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian

right atrium during right ventricular contraction (systole
).

Structure

The tricuspid valve usually has three

right ventricle, respectively. Tricuspid valves may also occur with two or four leaflets; the number may change over a lifetime.[2]

Function

See also:
Heart valves

The tricuspid valve functions as a one-way valve that closes during

ventricular enlargement (dilatation),[3] which can progress to right heart failure if left uncorrected.[4]

Clinical significance

Video explanation of tricuspid valve disease

Infected valves can result in endocarditis in intravenous drug users.[5][6] Patients who inject narcotics or other drugs intravenously may introduce infection, which can travel to the right side of the heart, most often caused by the bacteria S. aureus.[7] In patients without a history of intravenous exposure, endocarditis is more frequently left-sided.[7]

The tricuspid valve can be affected by

congenital abnormalities of the tricuspid valve. Congenital apical displacement of the tricuspid valve is called Ebstein's anomaly and typically causes significant tricuspid regurgitation
.

Certain carcinoid syndromes can affect the tricuspid valve by producing fibrosis due to serotonin production by those tumors.

The first endovascular tricuspid valve implant was performed by surgeons at the Cleveland Clinic.[9]

Tricuspid regurgitation

Main article: Tricuspid regurgitation

right ventricular volume overload.[10]

Additional images

  • Tricuspid valve. Deep dissection.
    Tricuspid valve. Deep dissection.
  • Tricuspid valve marked in yellow.
    Tricuspid valve marked in yellow.
  • Diagram of tricuspid insufficiency/regurgitation. Marked in black arrow.
    Diagram of tricuspid insufficiency/regurgitation. Marked in black arrow.

See also

References

  1. ^ "Anatomy of the Tricuspid Valve". e-echocardiography.com. Retrieved 2018-03-30.
  2. ^ Richard Van Pragh: Cardiac anatomy in A. C. Chang et al.: Pediatric Cardiac Intensive Care, Philadelphia 1998.
  3. PMID 10430758
    .
  4. ^ "Enlarged heart - Symptoms and causes". Mayo Clinic. Retrieved 2018-03-30.
  5. PMID 11019526
    .
  6. S2CID 32603989
    .
  7. ^
    ISBN 978-1-4160-2973-1
    .
  8. Mount Sinai Hospital, New York
  9. ^ University Circle Inc. Archived 2008-06-17 at the Wayback Machine
  10. ^
    PMID 26358570
    .
  11. ^ Prihadi', 'Edgard A. "Tricuspid valve regurgitation: no longer the "forgotten valve"". www.escardio.org. Retrieved 2021-11-27.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Tricuspid_valve&oldid=1218010901"