Abstract Dyspnea is a common and potentially serious symptom whose traditional diagnostic approach, based on physical examination and complementary tests, may present significant limitations. Point-of-care ultrasound (POCUS) has emerged as an effective tool for the rapid and accurate assessment of this symptom, both in outpatient settings and in emergency and critical care environments. This article provides a practical, illustrated guide to the integrated application of POCUS in the evaluation of dyspnea, with an emphasis on distinguishing cardiac from pulmonary causes. […]

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