What is the diagnosis and differential diagnosis of acute dyspnea?

The differential diagnosis of acute dyspnea includes cardiovascular causes, respiratory causes, ORL causes, and psychogenic causes.
Anamnesis and physical examination are essential for diagnosis, including vital signs, auscultation of the heart and lungs, and examination of the abdomen and extremities.
Basic complementary tests include arterial blood gas analysis, D-dimer, creatine phosphokinase and troponin, brain natriuretic peptide, electrocardiogram, chest X-ray, angio-CT, and ORL examination.