Unilateral pulmonary edema in acute aortic regurgitation: A complication of infective endocarditis.

Cardiogenic unilateral pulmonary edema (UPE) is an uncommon clinical entity and it represents just 2% of cardiogenic pulmonary edema with inclination for the right upper lobe and it is most commonly associated with severe mitral regurgitation. In our review, the literature does not include any UPE cases that are associated with severe aortic regurgitation (AR). Herein, we present a case with UPE, that includes a patient diagnosed with infective endocarditis who presented with shortness of breath. Initial chest imaging revealed UPE. Severe acute AR was diagnosed clinically and confirmed by echocardiogram, caused by vegetations on the non-coronary cusp of the aortic valve. The patient was transferred for emergent surgical intervention. This case underscores the importance of emergently evaluating valvular pathology to reduce the mortality rate that is associated with this condition. <Learning objective: In this study, we are highlighting the importance of having a high suspicion index to consider the diagnosis of unilateral pulmonary edema, as this condition is rare and hard to diagnose and carries a high mortality as well.>.