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Coronary anatomy in congenitally corrected transposition of the great arteries.
International Journal of Cardiology 2002 December
BACKGROUND: The advent of double switch procedures for the treatment of transposition of the great arteries with L-looped ventricles, e.g. typical congenitally corrected transposition of the great arteries, has made delineation of the coronary artery anatomy in these hearts important. Previous studies have suggested a consistently inverted coronary arterial pattern.
METHODS: A morphologic study was conducted of the coronary arterial anatomy of all heart specimens in our registry of approximately 2600 hearts with segmental anatomy [S,L,L] (situs solitus of the viscera and atria, ventricular L-loop, and levoposition of the aorta), with anatomical features to permit such repair.
RESULTS: Twenty specimens collected between 1965 and 1993 ranged in age from 1 day to 23 years. Transposition of the great arteries or double outlet right ventricle was seen in 12 (60%). One had a single coronary artery that arose from the right anterior sinus and trifurcated. Another had the anterior descending artery arise from the right ventricular coronary artery while the circumflex arose alone, directly above the intercoronary commissure. Eccentric ostia were seen in another four, with one left ventricular coronary artery originating directly above the intercoronary commissure. Right ventricular aorta with pulmonary atresia was in eight of the total (40%). Three had eccentric ostia: one with both arteries from the left posterior sinus, and one with the left ventricular coronary over the intercoronary commissure. None of these specimens had additional coronary anomalies that would further complicate surgery.
CONCLUSION: Nearly half of the specimens (45%) had coronary artery abnormalities that could have complicated, but not necessarily precluded, anatomic surgical repair.
METHODS: A morphologic study was conducted of the coronary arterial anatomy of all heart specimens in our registry of approximately 2600 hearts with segmental anatomy [S,L,L] (situs solitus of the viscera and atria, ventricular L-loop, and levoposition of the aorta), with anatomical features to permit such repair.
RESULTS: Twenty specimens collected between 1965 and 1993 ranged in age from 1 day to 23 years. Transposition of the great arteries or double outlet right ventricle was seen in 12 (60%). One had a single coronary artery that arose from the right anterior sinus and trifurcated. Another had the anterior descending artery arise from the right ventricular coronary artery while the circumflex arose alone, directly above the intercoronary commissure. Eccentric ostia were seen in another four, with one left ventricular coronary artery originating directly above the intercoronary commissure. Right ventricular aorta with pulmonary atresia was in eight of the total (40%). Three had eccentric ostia: one with both arteries from the left posterior sinus, and one with the left ventricular coronary over the intercoronary commissure. None of these specimens had additional coronary anomalies that would further complicate surgery.
CONCLUSION: Nearly half of the specimens (45%) had coronary artery abnormalities that could have complicated, but not necessarily precluded, anatomic surgical repair.
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