Nakao S, Vaillancourt C, Taljaard M, et al. - Because differentiation of acute heart failure and exacerbation of chronic obstructive pulmonary disease (COPD) in the emergency department is sometimes challenging, therefore, researchers herein intended to ascertain the classification performance of lung point-of-care ultrasound (POCUS) vs chest x-ray study to detect acute heart failure in older persons. Participants were patients (aged 50 years and older) who were experiencing shortness of breath from suspected acute heart failure or COPD. Using lung POCUS, detection of acute heart failure was accomplished by emergency physicians, with a sensitivity and specificity of 92.5% and 85.7%, respectively. Based on the findings, high sensitivity as well as specificity of lung POCUS in identifying acute heart failure was evident in a real clinical setting, and it displayed better performance when compared with chest x-ray in an older population.