Variations in the anatomical and branching pattern of the left coronary artery: a cadaveric study

Lakshmiprabha, S; Afroze, Khizer Hussain; Ramesh, P.; Asha, K R; Shivaleela, C; Anupama, D

doi:10.18203/2320-6012.ijrms20181274

Cited by 4 publications

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“…Other variants were the trifurcation (32.7%), tetrafurcation (6.7%) and the absence of divisions in the left common coronary trunk (2.7%). These findings were repeatedly confirmed by two studies done in India using 55 cadaveric heart specimens and 100 specimens respectively and by another study done in Oman [6,10,11] .…”

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confidence: 58%

Some Anatomical Variations of the Coronary Circulation among Sri Lankan Adults

Hulathduwa

2021

ACRI

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The coronary circulation has been the centre of focus of many anatomists, pathologists, cardiologists, cardiothoracic surgeons, physiologists and even the general public especially since the introduction of coronary angiography during the 1960's. Though a large number of data regarding the coronary circulation of the Western populations are available, research about coronary circulation of the Sri Lankan population is comparatively rare. This study comprises of data from 150 autopsy specimens of adult Sri Lankans died due to non-cardiac causes. 99.3% had a tricuspid aortic valve while only in 0.7% the aortic valve was bi-cuspid. The incidence of the ectopic origin of the left and the right coronary artery was equal (1.3%), and the posterior sinus was devoid of coronary ostia. A 55.3% of the study population had a single coronary artery ostium for each main coronary artery. The corresponding figure for the left coronary artery was 91.3%. Six percent (06%) of the right coronary ostia were positioned significantly above the sinus while the corresponding figure for the left coronary ostia was higher (17.5%). The average left ventricular wall thickness for males and females were 13mm and 12mm respectively. Significant muscular bridging (in relation to at-least one coronary artery) was found in 19.3% of the study population. The study concludes that variations in the cardiac anatomy are commoner than expected. As per Kitzman chart, cardiac dimensions of the Sri Lankans are somewhat smaller compared to the dimensions of the Western populations.

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Section: Four Divisionssupporting

confidence: 58%

Some Anatomical Variations of the Coronary Circulation among Sri Lankan Adults

Hulathduwa

2021

ACRI

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An Anatomical Study of Left Coronary Artery and Its Variations :A Cadaveric Study

Ranjan

Mehta

2023

Preprint

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PURPOSE The branching pattern of the left coronary artery (LCA) presents with multitude of variance. Thus, the ischemic area due to a myocardial infarction can be different among patients, this study is done to find out what are the various anatomic variations in left coronary artery? Hence this study is done to is to study left coronary artery variations in cadaveric hearts especially in origin and branching pattern. METHODS This study utilized 30 cadaveric heart specimens. Selection of cadaveric Hearts were not based on age and sex. The location and number of orifices in the aortic cusps, branching patterns and course of the LCA and the dominant patterns wereobserved. RESULTS The LCA after arising from the left posterior aortic sinus (LPAS), its main trunk ran forwards between the pulmonary trunk and the left auricle, and then in the left atrioventricular groove in all the 30 Cadavers. Bifurcation seen in 20(66.6%), trifurcation in 8(26.6%) and quadrifurcation in 2(6.6%). Right dominance was seen in 19(64%) specimens while left dominance was seen in 11(36.6%) heart specimens. Myocardial bridging was seen in four hearts (13%) involving left anterior descending artery. CONCLUSION: The study of coronary arteries is necessary for the cardio-thoracic surgeons. Awareness of the anatomy of coronary vessels and its variations is necessary for revascularisation during coronary artery bypass grafting.

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Study of Left Coronary Artery and Its Variations: A Cadaveric Study from Gujarat Region

Bhardwaj,

Shrimankar,

Trivedi

et al. 2024

Journal of the Anatomical Society of India

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Background: A lot of variations have been analyzed in the case of the left coronary artery (LCA) which makes it a leading cause of death globally. Therefore, awareness of normal and variant anatomy of this artery in relation to its main trunk and branches is the key to physicians, cardiologists, and radiologists in the management of various cardiac pathologies. Materials and Methods: Eighty embalmed and formalin-fixed adult human cadaveric hearts of both genders with no history or signs of pathology were dissected meticulously during educational hours. Results and Conclusion: Among 80 hearts studied, 71 hearts left coronary ostia were located below the sinotubular junction. The mean distance of left coronary ostia from the supravalvular ridge lying above and below was 2.93 ± 0.39 mm and 2.72 ± 0.92 mm, respectively. The mean diameter of the left coronary ostium was 3.67 ± 0.94 mm. The mean length and diameter of the LCA main trunk (LCAMT) were 13.06 ± 2.42 mm and 4.93 ± 0.60 mm, respectively. The most common branching pattern of LCAMT was bifurcation. The most frequent range of length of left anterior descending (LAD) and circumflex (Cx) artery was 10–12 cm and 6.5–8 cm, respectively. The most common termination point of LAD was at the anterior one-third part of posterior interventricular sulcus and for Cx artery was between the crux and obtuse border of the heart. Right coronary dominance was the most common.

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Variations in the anatomical and branching pattern of the left coronary artery: a cadaveric study

Cited by 4 publications

References 6 publications

Some Anatomical Variations of the Coronary Circulation among Sri Lankan Adults

Some Anatomical Variations of the Coronary Circulation among Sri Lankan Adults

An Anatomical Study of Left Coronary Artery and Its Variations :A Cadaveric Study

Study of Left Coronary Artery and Its Variations: A Cadaveric Study from Gujarat Region

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