Commentary clarifies new recommendations for point-of-care lung ultrasound

The commentary discusses two evidence-based documents: one addressing quantitative lung ultrasound in adults and children, and another updating the 2012 consensus on adult clinical applications. It distinguishes focused, pattern-based diagnostic scanning from standardized, multi-zone quantification of lung aeration, congestion, pneumothorax and pleural effusion. The authors also describe a three-level diagnostic approach, moving from identification of signs to assessment of additional features and, finally, integration with the broader clinical picture.

The authors consider evidence for prognosis more robust than evidence for ultrasound-guided treatment. In heart failure, B-line burden is associated with severity and predicts rehospitalization and death; in chronic heart failure, monitoring B-lines to guide therapy has been associated with fewer hospitalizations for decompensation. The commentary also outlines potential roles in critical-care monitoring and ventilatory strategy selection, noting that the latter is being tested in the ongoing PEGASUS trial.

The authors caution that lung ultrasound findings should not be treated as diagnoses in isolation. Aeration scores are approximate, require rigorously standardized repeat scans and cannot detect overdistension. The recommendations do not establish precise prognostic cut-offs for cardiogenic pulmonary edema, interstitial lung disease or ARDS. For fluid assessment, ultrasound may indicate congestion and a margin of safety, but does not determine fluid responsiveness.