J Emerg Med
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Among currently available surgical options for the first stage of surgery for infants with hypoplastic left heart syndrome (HLHS), the hybrid procedure is relatively new and less well known among primary care and emergency physicians. This procedure involves placement of a stent within the ductus arteriosus to maintain systemic blood flow and bands around both pulmonary arteries to prevent pulmonary overcirculation. As the number of infants undergoing this procedure increases, emergency physicians will likely encounter them in their practice and should be familiar with their unique physiology and potential complications. ⋯ This case highlights the potential of infants who undergo the hybrid procedure for HLHS to present to the ED with high acuity and, accordingly, the importance of adding this disease process to the vast burden of knowledge facing ED physicians.