Hypoxia and Polycythemia: A Pediatric Emergency Department Point of Care Ultrasound Diagnosis of Pulmonary Arteriovenous Malformation.

Point of care ultrasound (POCUS) can be useful in the differentiation between cardiac and pulmonary etiologies of hypoxia. Here, we present a child with signs of chronic hypoxia, found on POCUS to have multiple pulmonary arteriovenous malformations. A combination of POCUS and history supported a presumptive pediatric emergency department diagnosis of hereditary hemorrhagic telangiectasia. This case is the first case of a pulmonary arteriovenous malformation found on POCUS and reinforces the importance of POCUS as a first-line examination in the evaluation of chronic hypoxia in the pediatric emergency department.