ArticleEuropean heart journal. Case reports2025
Congenitally corrected transposition of the great arteries and coronary artery disease: a case report in an 83-year-old male.
Article in European heart journal. Case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Congenitally corrected transposition of the great arteries (CCTGA), or L-loop TGA, is a rare congenital heart defect, comprising <1% of congenital heart diseases, with an incidence of ∼1 in 33 000 births. It is characterized by atrioventricular and ventriculo-arterial discordance, where the left ventricle connects to a right atrium and pumps deoxygenated blood into the pulmonary artery, while the right ventricle (RV) connects to a left atrium and pumps oxygenated blood into the aorta. Congenitally corrected transposition of the great arteries often coexists with other cardiac anomalies, although ∼10% of cases are isolated. A case report highlights a unique instance of coronary artery disease (CAD) in CCTGA. Case summary: An 83-year-old male with CCTGA presented with persistent nausea, fatigue, poor oral intake, and epigastric pain. He had a history of hypertension, Type II diabetes, dyslipidaemia, ischaemic heart disease, and chronic atrial fibrillation. On examination, he was stable but showed signs of a urinary tract infection. A cardiac workup revealed no ischaemic changes on electrocardiography, but a cardiac computed tomography identified significant CAD involving multiple vessels. A decision was made to perform percutaneous coronary intervention on the right coronary artery, successfully placing two stents. Discussion: In patients with CCTGA, major factors contributing to morbidity and mortality include progressive decline in systemic RV function and systemic tricuspid valve regurgitation. A retrospective study showed that 25% of uncomplicated CCTGA patients develop heart failure by age 45, while approximately two-thirds of complicated cases do. Survival beyond age 70 is rare. Prompt management of CAD through angioplasty is critical to prevent further deterioration of RV function and worsening tricuspid regurgitation. However, the atypical positioning of the aorta and coronary arteries complicates selective coronary angiography, making a challenging diagnosis and treatment.
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