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Echocardiographic findings in patients with left superior vena cava and dilated coronary sinus
Insights
A rare congenital anomaly, a persistent left superior vena cava (PLSVC) draining into the coronary sinus, was diagnosed using echocardiography and contrast injection. This diagnostic technique effectively identified PLSVC and ruled out pericardial effusion.
Area of Science:
- Cardiology
- Medical Imaging
- Congenital Heart Disease
Background:
- Persistent left superior vena cava (PLSVC) is a rare congenital anomaly.
- It often drains into the left atrium via the coronary sinus, potentially leading to hemodynamic changes.
- Accurate diagnosis is crucial for appropriate management.
Observation:
- Three patients with suspected PLSVC were evaluated.
- Cardiac catheterization and echocardiography were utilized for diagnosis.
- A unique contrast injection technique was employed to visualize venous pathways.
Findings:
- Echocardiography revealed a posterior echo-free space in all patients.
- Contrast injection into the left arm opacified this space, confirming its connection to the coronary sinus.
- This confirmed the presence of a persistent left superior vena cava draining into the coronary sinus.
- The technique successfully differentiated PLSVC from pericardial effusion.
Implications:
- This diagnostic approach offers a reliable method for identifying PLSVC.
- It aids in differentiating PLSVC from other conditions with similar imaging findings.
- Accurate diagnosis facilitates timely and appropriate clinical intervention for patients with PLSVC.
Abstract:
Three patients with a left superior vena cava draining into a dilated coronary sinus were studied with cardiac catheterization and echocardiography. The diagnosis was confirmed at operation in two patients. A posterior echo-free space was filled with echoes during injection of contrast medium into the left but not the right arm. This echo-free space was localized to the left atrioventricular groove. This technique established the presence of a left superior vena cava communicating with the coronary sinus and excluded pericardial effusion as the source of the posterior echo-free space.