Anomalous right coronary artery: a multimodality hunt for the origin
J Gilmour1, H Kafka2, G Ropchan3
1Division of Cardiology, Queen's University, Kingston, ON, Canada K7L 3N6.
Case Reports in Cardiology
|May 15, 2014
Summary
Anomalous origin of the right coronary artery from the pulmonary artery (ARCAPA) is a rare congenital anomaly. Multimodality imaging, including CT and MRI, is crucial for diagnosing ARCAPA when initial tests are inconclusive.
Area of Science:
- Cardiology
- Medical Imaging
- Congenital Anomalies
Background:
- Anomalous origin of the right coronary artery from the pulmonary artery (ARCAPA) is a rare congenital heart defect.
- Early diagnosis is essential for timely intervention and management.
Observation:
- A 48-year-old female presented with angina and exertional shortness of breath, with initial T-wave inversions on ECG.
- Transthoracic echocardiography suggested a coronary-cameral fistula, showing unusual Doppler signals and diastolic flow patterns.
Findings:
- A multimodality imaging approach, integrating cardiac CT and MRI, confirmed the diagnosis of ARCAPA.
- Cardiac CT and MRI demonstrated high accuracy in delineating the anomalous coronary artery anatomy.
Implications:
- This case underscores the diagnostic challenges of ARCAPA.
- Multimodality imaging, particularly CT and MRI, plays a vital role in confirming ARCAPA and guiding surgical correction.
Related Concept Videos
Coronary Circulation
9.9K
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
9.9K
The Arch of Aorta
2.2K
The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
Encircling the heart, the coronary arteries form a ring-like structure before...
2.2K
Cardiac Catheterization II: Right Heart Catheterization
2.2K
Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
2.2K
Physiology of the Heart: The Cardiac Cycle
15.8K
The cardiac cycle describes the events from one heartbeat to the next. It includes three main phases: diastole, atrial systole, and ventricular systole, all driven by changes in chamber pressures and the function of heart valves.
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
Diastole: The Relaxation Phase
During diastole, all four heart chambers relax. The atrioventricular (AV) valves open, and the semilunar valves close. This phase sees the lowest chamber pressures, promoting ventricular filling. Venous blood enters the heart through the...
15.8K
Cardiac Catheterization III: Left Heart Catheterization
1.3K
Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
1.3K
Cardiomyopathy III: Hypertrophic Cardiomyopathy
804
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
804


