A prospective clinical study reports that lung ultrasound B-lines can accurately estimate left ventricular filling pressures and improve diagnostic specificity when integrated into heart failure evaluation algorithms. The results support the use of point-of-care ultrasound as a quantitative contributor to heart failure assessment, rather than only a qualitative marker. For clinicians, the integration into diagnostic algorithms may help standardize interpretations across settings. Taken together with earlier observations of ultrasound AI limitations in other contexts, the study underlines a key theme: performance depends on both measurement fidelity and how outputs are embedded in decision frameworks.