International Journal of Science and Research (IJSR)

International Journal of Science and Research (IJSR)
www.ijsr.net | Most Trusted Research Journal Since Year 2012

ISSN: 2319-7064



Research Paper | Anatomy Science | India | Volume 3 Issue 7, July 2014

The Study of Number of Ostia, Inner and Outer Diameters of Coronary Arteries at Their Origin in Human Heart: A Cadeveric Study

Dr. Nagaraj Mallashetty, Dr. Santosh Bhosale

Objectives: Coronary artery disease is one of the major causes of death worldwide The incidence of coronary artery disease is increasing today in developing countries, because of sedentary lifestyle, urbanization, hypertension, diabetes mellitus and increased type A personality. The increasing use of diagnostic and therapeutic interventional procedures requires a sound, basic knowledge of the coronary artery pattern. This study is undertaken to know the number of ostia, inner and outer diameters of coronary arteries at their origin. Materials and method: Heart specimens were collected from cadavers during routine dissection classes conducted by the department of anatomy and preserved in 5 % formalin. Ostia of Coronary arteries were identified carefully by underwater dissection method and inner and outer diameter of coronary arteries was measured using digital vernier caliper. Results: Among the 30 hearts studied, 27 hearts showed 2 ostia, one in anterior aortic sinus for right coronary artery and one in left posterior aortic sinus for left coronary artery. Three hearts showed 3 ostia. Two in anterior aortic sinus, one for right coronary and one for right conus artery (third coronary artery).Ostium diameter and outer diameter of left coronary artery were 2.67+/- 0.44 and 4.28+/- 0.90 respectively and ostium diameter and outer diameter of right coronary artery were 2.49+/-0.28 and 4.01+/-0.48 respectively. In all the specimens ostium for right coronary artery was below the supravalvular ridge. In 86.6 % of specimens the position of ostia for left coronary artery was present below the supravalvular ridge, in 13.3 % of specimens the ostia was at the supravalvular ridge. Interpretation and conclusion: Variations of coronary arteries are common. A thorough knowledge of coronary arteries will be helpful to the cardiologists and radiologists to predefine the abnormalities by invasive and non invasive studies.

Keywords: Coronary arteries, ostia, diameter, supravalvular ridge

Edition: Volume 3 Issue 7, July 2014

Pages: 1628 - 1630


How to Cite this Article?

Dr. Nagaraj Mallashetty, Dr. Santosh Bhosale, "The Study of Number of Ostia, Inner and Outer Diameters of Coronary Arteries at Their Origin in Human Heart: A Cadeveric Study", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=20141337, Volume 3 Issue 7, July 2014, 1628 - 1630

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Research Paper, Anatomy Science, India, Volume 3 Issue 7, July 2014

Pages: 1628 - 1630

The Study of Number of Ostia, Inner and Outer Diameters of Coronary Arteries at Their Origin in Human Heart: A Cadeveric Study

Dr. Nagaraj Mallashetty, Dr. Santosh Bhosale

Share this article
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Qualitative and quantitative presence of the pathogenic bacterium V. parahaemolyticus in extensive and modified extensive Penaeus monodon culture systems on the southwest coast of Kerala, was monitored during three shrimp culture seasons. Annual mean V. parahaemolyticus in water constituted 6.7 %. Percentage distribution of V. parahaemolyticus in sediment was the highest during premonsoon (90.6 %) and the lowest during postmonsoon (89.4 %), with monsoon registering 90.4 %. Annual mean percentage in sediment was 90.1 %. In shrimp, V. parahaemolyticus load during the three seasons were 3.8, 2.1 and 3.1 %, with an annual mean of 3.1 %. Percentage distribution of V. parahaemolyticus in water, in modified extensive system during the three seasons were 1.9, 5.4 and 13.5 %, respectively. In the present study, both in extensive and modified extensive systems, V. parahaemolyticus registered the highest load in sediment throughout the three seasons. In both extensive and modified extensive systems V. parahaemolyticus showed an increasing trend up to the end of each culture season. In the present study, in both systems distribution of V. parahaemolyticus showed an increasing trend with increase in salinity. In extensive system, in shrimp and in modified extensive system, in water and shrimp, distribution of V. parahaemolticus was significantly negatively correlated with sand content (P < 0.05) and positively correlated with silt (P < 0.05).