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Direct Re-implantation of Left Coronary Artery into the Aorta in Adults with Anomalous Origin of Left Coronary Artery from the Pulmonary Artery (ALCAPA)
13:10

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Isolated anomalous origin of right coronary artery from the main pulmonary artery

Chih-Ta Yao1, Jieh-Neng Wang, Cheng-Nan Yeh

  • 1Department of Pediatrics, Sin Lau Hospital, Tainan, Taiwan.

Journal of Cardiac Surgery
|September 13, 2005
PubMed

Insights

Anomalous origin of the right coronary artery (ARCA) from the main pulmonary artery (MPA) is rare. Surgical repair of isolated ARCA from MPA in an asymptomatic child resolved myocardial ischemia.

Area of Science:

  • Cardiology
  • Congenital Heart Disease
  • Pediatric Cardiac Surgery

Background:

  • Anomalous origin of the right coronary artery from the main pulmonary artery (ARCA from MPA) is a rare congenital cardiac malformation.
  • While often asymptomatic, ARCA from MPA can lead to myocardial ischemia and sudden death, especially when associated with other cardiac anomalies.

Observation:

  • A 7-year-old asymptomatic boy presented with a heart murmur.
  • Echocardiography, cardiac catheterization, and angiography confirmed isolated ARCA from MPA.

Findings:

  • Preoperative thallium-201 myocardial perfusion imaging revealed myocardial ischemia in the anterolateral septal area following a dipyridamole stress test.
  • Surgical re-implantation of the right coronary artery into the ascending aorta successfully resolved the ischemia.

Implications:

  • This case highlights the importance of diagnosing and treating even asymptomatic ARCA from MPA to prevent potential ischemic events.
  • Surgical correction of ARCA from MPA can effectively restore normal coronary perfusion and resolve myocardial ischemia in pediatric patients.

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