@Article{CHD.2020.011527,
AUTHOR = {Naveed Rabbani, Sarah Hofman DeYoung, Ronald L. Gibson, Jeffrey Conwell, Jason F. Deen},
TITLE = {Positional Hypoxemia from Persistent Left Superior Vena Cava Draining to the Left Atrium},
JOURNAL = {Structural and Congenital Heart Disease},
VOLUME = {15},
YEAR = {2020},
NUMBER = {4},
PAGES = {197--201},
URL = {http://www.techscience.com/schd/v15n4/40125},
ISSN = {3071-1738},
ABSTRACT = {Persistent left superior vena cava (PLSVC) is a relatively common
congenital venous anomaly that typically drains into the coronary sinus without
hemodynamic significance. Rarely a PLSVC drains directly into the left atrium,
forming a right-to-left shunt that can result in hypoxemia and potential paradoxical
embolism. We present the case of a 2-year-old medically complex child on chronic
mechanical ventilation with eventual diagnosis of episodic hypoxemia due to a
PLSVC draining into the left atrium with position-dependent venous flow. The lesion
was identified with contrast echocardiography and cardiac MRI. Subsequent occlusion with a vascular plug resulted in resolution of the child’s positional hypoxemia.
This case extends available reports for this rare presentation of PLSVC and serves as
a reminder of the importance of injection site in contrast echocardiography.},
DOI = {10.32604/CHD.2020.011527}
}