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Variant Distribution of the Obtuse Marginal Artery of the Heart (Anatomical and Multislice CT Imaging)
Author(s) -
ElMaasarany Shirley Hilal Labib,
ElTahhan Salah Mohammed,
Beiram Dalia Mahmoud
Publication year - 2013
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.27.1_supplement.525.5
Subject(s) - medicine , artery , ventricle , circumflex , multislice , multislice computed tomography , anatomy , radiology , computed tomography , cardiology
Background The obtuse marginal artery (OMA) is one or two branches from the left circumflex branch(LCx) of the left main coronary artery (LMCA). It supplies the most lateral wall of the left ventricle. Aim The aim of the present work was to study the origin, size, distribution and variations of the OMA. Material and Methods Twenty embalmed human hearts showing no gross pathological lesions in the wall of the chambers were used. The LMCA, the left anterior descending(LAD), the LCX and the OMA were dissected to study their distribution. Multislice Computed Tomography (MSCT) of forty healthy individuals with no obstructed lesions were studied retrospectively. Results Gigantic OMA was seen in 3 out of the 20 dissected specimens and in 5 out of the 40 MSCT hearts. Its diameter was bigger than the LCx itself (more than 3.4 mm in diameter). They supply not only the lateral wall of the left ventricle but also most of its anterior and inferior walls reaching to the apex. Conclusion These variant anatomical findings shoud be considered during various interventional and surgical procedures.