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{{Short description|Anatomical area located in the right atrium of human heart}} |
{{Short description|Anatomical area located in the right atrium of human heart}} |
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[[File:Triangle of Koch (large).jpg|thumb|Dissection in right anterior oblique view of the right atrium shows the borders of the triangle of Koch. In this view, the putative fast and slow pathways toward the AV node (dotted shape in yellow) are depicted. Asterisk (*): central fibrous body, CSO: coronary sinus ostium, ER: Eustachian ridge, ICV: inferior cava vein, OF: oval fossa, STV: septal leaflet of the tricuspid valve, and TT: tendon of Todaro.]] |
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'''Koch's triangle''', named after the German [[pathology|pathologist]] and [[cardiology|cardiologist]] [[Walter Karl Koch]],<ref>{{cite journal| doi =10.1532/HSF98.20101047 | volume=14 | title=Calling the Heart by Name: Distinguished Eponyms in the History of Cardiac Anatomy | year=2011 | journal=The Heart Surgery Forum | page=183 | last1 = Conti | first1 = Andrea A.| url =https://pdfs.semanticscholar.org/d1a2/47c7a80df61b8d9ada78f940be727daa6b7b.pdf | archive-url =https://web.archive.org/web/20180802040922/https://pdfs.semanticscholar.org/d1a2/47c7a80df61b8d9ada78f940be727daa6b7b.pdf | url-status =dead | archive-date =2018-08-02 }}</ref> is an anatomical area located in the [[superficial anatomy|superficial]] paraseptal [[endocardium]] of the [[right atrium]], which its boundaries are the [[Coronary circulation|coronary]] sinus orifice, [[tendon of Todaro]], and septal leaflet of the right [[atrioventricular valve]].<ref>{{Cite book|url=https://www.worldcat.org/oclc/892338420|title=Catheter ablation of cardiac arrhythmias|others=Huang, Shoei K.,, Miller, John M. (John Michael), 1954-|isbn=9780323244299|edition= Third |location=Philadelphia, PA|pages=Figure 6-6|oclc=892338420}}</ref> It is anatomically significant because the [[atrioventricular node]] is located at the apex of the triangle. Also the elements anatomically near to it are the membranous [[septum]] and the Eustachian ridge. This triangle ends at the site of the [[coronary sinus]] orifice inferiorly and, continuous with the sub-Eustachian pouch. The tendon of Todaro forms the [[hypotenuse]] of the triangle and the base is formed by the coronary sinus orifice and the vestibule of the right atrium. Variations in the size of Koch's triangle are common. |
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==References== |
==References== |
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Koch's triangle, named after the German pathologist and cardiologist Walter Karl Koch,[1] is an anatomical area located in the superficial paraseptal endocardium of the right atrium, which its boundaries are the coronary sinus orifice, tendon of Todaro, and septal leaflet of the right atrioventricular valve.[2] It is anatomically significant because the atrioventricular node is located at the apex of the triangle. Also the elements anatomically near to it are the membranous septum and the Eustachian ridge. This triangle ends at the site of the coronary sinus orifice inferiorly and, continuous with the sub-Eustachian pouch. The tendon of Todaro forms the hypotenuse of the triangle and the base is formed by the coronary sinus orifice and the vestibule of the right atrium. Variations in the size of Koch's triangle are common.
{{cite book}}: CS1 maint: others (link)
