{Reference Type}: Journal Article {Title}: The use of point-of-care ultrasound in new-onset dyspnea: an unexpected diagnosis. {Author}: Özpak E;Defruyt L;Braeckeveldt L;Czapla J;Vandecasteele E; {Journal}: Acta Clin Belg {Volume}: 0 {Issue}: 0 {Year}: Jul 2020 20 {Factor}: 1.682 {DOI}: 10.1080/17843286.2020.1794510 {Abstract}: In this article, we report a patient with new-onset dyspnea and symptoms suggestive of heart failure, who had an unexpected diagnosis of a large left atrial myxoma with diastolic protrusion into the left ventricle. We further underline the role of cardiac Point-of-Care Ultrasound (POCUS) in the initial evaluation of patients with cardiac complaints in the emergency room setting. It can help to differentiate the patients' symptoms in order to achieve a more accurate diagnosis and thus increase the efficacy of the established therapy. In some cases, as with this patient, it can help to establish a diagnosis which needs prompt therapy.