{"id":800,"date":"2017-08-31T04:53:21","date_gmt":"2017-08-31T04:53:21","guid":{"rendered":"http:\/\/www.ijmhr.org\/IntJAnatRes\/?page_id=800"},"modified":"2017-08-31T05:00:09","modified_gmt":"2017-08-31T05:00:09","slug":"ijar-2017-280","status":"publish","type":"page","link":"https:\/\/www.ijmhr.org\/IntJAnatRes\/ijar-2017-280","title":{"rendered":"IJAR.2017.280"},"content":{"rendered":"
<\/i> DOWNLOAD PDF<\/span><\/a><\/div><\/div><\/div>
<\/i> Table of Contents<\/span><\/a><\/div><\/div><\/div><\/div>\n

Type of Article:<\/strong>\u00a0\u00a0Original Research<\/h3>\n

Volume 5; Issue 3.2 (August 2017)<\/strong><\/h3>\n

Page No.:<\/strong>\u00a04182-4186<\/h3>\n

DOI:\u00a0<\/strong>https:\/\/dx.doi.org\/10.16965\/ijar.2017.280<\/h3>\n

VARIATIONS IN THE ORIGIN OF ARTERY TO ATRIOVENTRICULAR NODE<\/h3>\n

Vidyashambhava Pare *1<\/sup>, Roopa Kulkarni 2<\/sup>.<\/strong><\/p>\n

*1<\/sup> Professor and Head, Department of Anatomy, K.V.G. Medical College and Hospital, Kurunjibagh, SULLIA \u2013 Dakshina Kannada, Karnataka, India.<\/p>\n

2<\/sup> Principal and Professor of Anatomy, K.V.G. Medical College and Hospital, Kurunjibagh, SULLIA \u2013 Dakshina Kannada, Karnataka, India.<\/p>\n

Address for Correspondence:<\/strong> Dr. V.S. Pare, Professor & Head of the Department of Anatomy, K.V.G. Medical College & Hospital, Sullia, D.K. , Karnataka, India. Telephone numbers: Office: 08257\u00a0\u00a0 232608 Mobile: 9448460498, 9901730398.\u00a0E-Mail:<\/strong> vs_pare@yahoo.co.in<\/a><\/p>\n

ABSTRACT: <\/strong><\/p>\n

Introduction<\/strong>: The normal functioning of the conduction system of heart is important and has increased interest in understanding their disorders. The arteries supplying the atrioventricular node have presented variations in origin.\u00a0 This node is supplied mainly by the branches of right coronary artery and in small number of cases it is supplied by the branches of left coronary artery. The branches of right coronary artery are broadly classified into atrial, ventricular and septal branches. The arterial supply to atrioventricular node is by the first posterior septal branch of the right coronary artery in about 80% of cases. There are inconstant branches of circumflex artery and this artery itself may terminate by supplying the A V node.<\/p>\n

Materials and Methods:<\/strong> Sixty human hearts were studied in the Department of Anatomy, Mysore Medical College, Mysore, for two years. They were studied by dissection method (37 hearts), corrosion cast (16 hearts), and arteriography (7 hearts).<\/p>\n

Observation:<\/strong> The origin of atrioventricular nodal artery was from an atrial branch of right coronary artery in 06 specimens, ventricular branch of right coronary artery in 02 cases and interventricular septal artery in 04 cases. The atrioventricular nodal artery was seen as a terminal branch of parent artery in 07 cases. In the remaining the atrioventricular nodal artery originated from the coronary arteries directly.<\/p>\n

Discussion<\/strong>: The coronary arteries develop in situ and later get connected with the aortic buds. The functional period of the embryo often determines the course of the blood flow and secondary changes. The arteries thus developed, pursue the shortest course to reach their destination. This explains for all known coronary artery anomalies. In the present study, in nineteen cases, the origin was from the atrial, ventricular or septal branches of the right or left coronary artery. Our observations coincided with the observations mentioned in Gray\u2019s anatomy partially.<\/p>\n

Conclusion:<\/strong> The atrioventricular nodal artery is the nourishing channel for the atrioventricular node. The variations in the origin of atrioventricular nodal artery from, atrial, ventricular and interventricular septal arteries of right coronary artery are seen in about 19 cases. In the rest, it originated from the trunk of the coronary artery directly. This information would kindle the interest of researchers to further explore the variations in the origin of the atrioventricular nodal artery as there were no other references available.<\/p>\n

KEY WORDS: <\/strong>Atrioventricular Nodal Artery, Right Coronary Artery, Left Circumflex Artery, Atrial Branches, Interventricular Septal Branches.<\/p>\n

REFERENCES<\/strong><\/p>\n

    \n
  1. H. Anderson, S.Y.Ho and A.E. Becker, The surgical anatomy of the conduction tissues. Thorax. 1983, June;38(6):408-420.<\/li>\n
  2. James T.N., Anatomy of Coronary arteries in Health and disease. Circulation, 1965;32:1020-1033.<\/li>\n
  3. Hutchinson M.C.E., A Study of Atrial Arteries in Man; Journal of Anatomy; 1978;125:39-54.<\/li>\n
  4. Susan Standring; Gray\u2019s Anatomy, Ch. Thorax, Section 7; chapter 56, Heart and great vessels. 2008, 40th<\/sup> Elsevier Churchill Livingstone. Page no. 977-981.<\/li>\n
  5. David E. Reese, Takashi Mikawa and David M. Bader; Development of Coronary Vessel System. Circulation Research; 2002;91:761-768.<\/li>\n
  6. Adriana DM Villa, Eva Sammut, Arjun Nair, Ronak Rajani, Rodolfo Bonmini and Amedeo Chiribiri, Coronary artery anomalies overview: The normal and the abnormal. World J. Radiol. 2016 June 28;8(6):537-555<\/li>\n
  7. PITT, B. Interarterial coronary anastomoses. Occurance in normal hearts and in certain pathologic conditions. Circulation, 1959, Nov. 20;816-22.<\/li>\n
  8. Baroldi G, Mantero O, Scomazzoni G. The collaterals of the coronary arteries in normal and pathologic heart. Circulation Research. 1956;4:223-9.<\/li>\n
  9. Anderson and Becker, Cardiac anatomy \u2013 An integrated Text and Colour Atlas. London : Gower Medical Pub. ; Edinburgh ; New York : Churchill Livingstone, 1980.<\/li>\n
  10. Pejkovic B, Krajnc I, Anderhuber F, Kosutic D., Anatomical aspects of the arterial blood supply to the sinoatrial and atrioventricular nodes of the human heart. J. Int. Med. Res. 2008, July- Aug;36(4):691-8.<\/li>\n<\/ol>\n

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    \n \t Cite this article:<\/strong><\/span> Vidyashambhava Pare, Roopa Kulkarni. VARIATIONS IN THE ORIGIN OF ARTERY TO ATRIOVENTRICULAR NODE. Int J Anat Res 2017;5(3.2):4182-4186. DOI:\u00a0<\/strong>10.16965\/ijar.2017.280 \u00a0\n <\/div>\t\n\t\t\n","protected":false},"excerpt":{"rendered":"

    Type of Article:\u00a0\u00a0Original Research Volume 5; Issue 3.2 (August 2017) Page No.:\u00a04182-4186 DOI:\u00a0https:\/\/dx.doi.org\/10.16965\/ijar.2017.280 VARIATIONS IN THE ORIGIN OF ARTERY TO ATRIOVENTRICULAR NODE Vidyashambhava Pare *1, Roopa Kulkarni 2. *1 Professor and Head, Department of Anatomy, K.V.G. Medical College and Hospital, Kurunjibagh, SULLIA \u2013 Dakshina Kannada, Karnataka, India. 2 Principal and Professor of Anatomy, K.V.G. Medical
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