Right atrial appendage 5480356 216250019 2008-05-31T20:17:44Z Bob K31416 7042340 edit reflected new name for article {{Infobox Anatomy | Name = {{PAGENAME}} | Latin = auricula dextra | GraySubject = 138 | GrayPage = 529 | Image = Gray494.png | Caption = [[Heart]] seen from above. (Right auricula labeled at upper right.) | Image2 = Gray492.png | Caption2 = [[Sternocostal surface]] of [[heart]]. (Right auricula visible at upper left.) | System = | Precursor = | MeshName = | MeshNumber = | DorlandsPre = a_73 | DorlandsSuf = 12169666 | }} The '''right atrial appendage (RAA)''' (right auricular appendix, right auricula, right auricle)<ref name="pmid18453746">{{cite journal |author=Gong D, Zhang Y, Cai B, ''et al'' |title=Characterization and Comparison of Na, K(+) and Ca(2+) Currents Between Myocytes from Human Atrial Right Appendage and Atrial Septum |journal=Cell. Physiol. Biochem. |volume=21 |issue=5-6 |pages=385–394 |year=2008 |pmid=18453746 |doi=10.1159/000129631 |url=http://content.karger.com/produktedb/produkte.asp?typ=fulltext&file=000129631}}</ref> is a small conical muscular pouch attached to the [[right atrium]] of the [[heart]]. ==Anatomy== Its margins present a dentated edge. It projects from the upper and front part of the sinus forward and toward the left side, overlapping the root of the [[aorta]]. The right auricle, along with the right atrial body, is lined with pectinate muscles that form a network of hills and furrows that give it a trabeculated surface. ==Terminology== In older texts, the term "right auricle" was often used to describe the structure now known as the [[right atrium]]. ==Clinical significance== It is possible for [[tachycardia]] to emerge from this structure.<ref name="pmid18077484">{{cite journal |author=Freixa X, Berruezo A, Mont L, ''et al'' |title=Characterization of focal right atrial appendage tachycardia |journal=Europace |volume=10 |issue=1 |pages=105–9 |year=2008 |month=January |pmid=18077484 |doi=10.1093/europace/eum264 |url=http://europace.oxfordjournals.org/cgi/pmidlookup?view=long&pmid=18077484}}</ref><ref name="pmid18005038">{{cite journal |author=Zhang T, Li XB, Wang YL, ''et al'' |title=Focal atrial tachycardia arising from the right atrial appendage: electrophysiologic and electrocardiographic characteristics and catheter ablation |journal=Int. J. Clin. Pract. |volume= |issue= |pages= |year=2007 |month=November |pmid=18005038 |doi=10.1111/j.1742-1241.2007.01489.x |url=http://dx.doi.org/10.1111/j.1742-1241.2007.01489.x}}</ref> Rupture is rare.<ref name="pmid17302990">{{cite journal |author=Figueiredo AM, Poggetti RS, Quintavalle FG, ''et al'' |title=Isolated right atrial appendage (RAA) rupture in blunt trauma--a case report and an anatomic study comparing RAA and right atrium (RA) wall thickness |journal=World J Emerg Surg |volume=2 |issue= |pages=5 |year=2007 |pmid=17302990 |doi=10.1186/1749-7922-2-5 |url=http://www.wjes.org/content/2//5}}</ref> ==References== {{reflist|2}} ==See also== * [[Left atrial appendage]] {{circulatory-stub}} {{Gray's}} {{Heart}} [[pl:Prawe uszko serca]