Cadaveric Study On Normal And Variant Anatomy Of Left Coronary Artery

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dc.contributor.authorK S, Sachinen_US
dc.contributor.authorH., Mamathaen_US
dc.contributor.authorD’Souza, A S.en_US
dc.date.accessioned2020-04-23T07:31:22Z
dc.date.available2020-04-23T07:31:22Z
dc.date.issued2019-04
dc.description.abstractBackground: Human heart is supplied by coronary arteries – Right and Left coronary artery. The coronary arteriesarise from the aortic sinuses and the left coronary artery from the left posterior aortic sinus. The left coronaryartery has two branches, the anterior interventricular and circumflex arteries. The anterior interventricularbranch is the continuation of left coronary artery, gives off septal branches, right and left ventricular branches.The left ventricular branches are called diagonal arteries. The left circumflex artery gives off left atrial and leftventricular branches. One of these atrial branches supply the sinoatrial node in 35% of subjects and AV node in10-20% of the subjects.Materials and Methods: The study was carried out in the department of anatomy, Kasturba Medical College,Manipal, India. The study was performed on 50 formalin fixed human hearts of unknown sex and age. The leftcoronary artery and their branches were carefully dissected. The origin, branches & branching pattern of leftcoronary artery was observed, noted and photographed.Results: In present study, 49 samples (98%) showed the origin of left coronary artery from left posterior aorticsinus while 01 sample (02%) had no trunk of left coronary artery. Sino-atrial nodal artery was originating formcircumflex artery in 13 samples (26%) and atrio-ventricular nodal artery from the circumflex artery in 05samples (10%). The trunk of left coronary artery was bifurcating in 37 samples (74%) and trifurcating in 12samples (24%) with one sample (02%) showing absent trunk of left coronary artery. The median artery waspresent in 12 samples (24%) and posterior interventricular artery was originating from circumflex artery in 05samples (10%).Conclusion: Left coronary artery commonly originated from left posterior aortic sinus with very few variations.Sino-atrial nodal artery and atrioventricular nodal artery commonly originates from right coronary artery.Bifurcation of left coronary artery is commoner than trifurcation. The present study is useful in better understandingof the normal and variant anatomy of left coronary arteryen_US
dc.identifier.affiliationsAssistant Professor, Department of Anatomy, K S Hegde Medical Academy, Mangaluru, Karnataka, India.en_US
dc.identifier.affiliationsAssociate Professor, Department of Anatomy, Kasturba Medical College, Manipal, Karnataka, India.en_US
dc.identifier.affiliationsProfessor & Head, Department of Anatomy, Kasturba Medical College, Manipal, Karnataka, India, drsachinks63@gmail.comen_US
dc.identifier.citationK S Sachin, H. Mamatha, D’Souza A S.. Cadaveric Study On Normal And Variant Anatomy Of Left Coronary Artery. International Journal of Anatomy and Research. 2019 Apr; 2: 6601-6606en_US
dc.identifier.issn2321-4287
dc.identifier.issn2321-8967
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/198558
dc.languageenen_US
dc.publisherIMED Research Publicationsen_US
dc.relation.issuenumber2en_US
dc.relation.volume7en_US
dc.source.urihttps://dx.doi.org/10.16965/ijar.2019.179en_US
dc.subjectLeft coronary arteryen_US
dc.subjectAortic sinusen_US
dc.subjectSino-atrial nodal arteryen_US
dc.subjectAtrioventricular nodal arteryen_US
dc.subjectLeft circumflex artery.en_US
dc.titleCadaveric Study On Normal And Variant Anatomy Of Left Coronary Arteryen_US
dc.typeJournal Articleen_US
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