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Positional Hypoxemia from Persistent Left Superior Vena Cava Draining to the Left Atrium

Naveed Rabbani1,*, Sarah Hofman DeYoung2, Ronald L. Gibson2, Jeffrey Conwell1, Jason F. Deen1

1 Division of Pediatric Cardiology, Seattle Children’s Hospital and the University of Washington School of Medicine, Seattle, WA 98105, USA
2 Division of Pediatric Pulmonary and Sleep Medicine, Seattle Children’s Hospital and the University of Washington School of Medicine, Seattle, WA 98105, USA

* Corresponding Author: Naveed Rabbani. Email: email

Congenital Heart Disease 2020, 15(4), 197-201. https://doi.org/10.32604/CHD.2020.011527

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.

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APA Style
Rabbani, N., DeYoung, S.H., Gibson, R.L., Conwell, J., Deen, J.F. (2020). Positional hypoxemia from persistent left superior vena cava draining to the left atrium. Congenital Heart Disease, 15(4), 197-201. https://doi.org/10.32604/CHD.2020.011527
Vancouver Style
Rabbani N, DeYoung SH, Gibson RL, Conwell J, Deen JF. Positional hypoxemia from persistent left superior vena cava draining to the left atrium. Congeni Heart Dis. 2020;15(4):197-201 https://doi.org/10.32604/CHD.2020.011527
IEEE Style
N. Rabbani, S.H. DeYoung, R.L. Gibson, J. Conwell, and J.F. Deen "Positional Hypoxemia from Persistent Left Superior Vena Cava Draining to the Left Atrium," Congeni. Heart Dis., vol. 15, no. 4, pp. 197-201. 2020. https://doi.org/10.32604/CHD.2020.011527



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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