Lung Ultrasound Is Accurate for the Diagnosis of High-Altitude Pulmonary Edema: A Prospective Study

Figure 7

Examples of HAPE patients with negative manifestation of LUS. (a) CXR before treatment: enlarged hilar shadows can be observed; (a1) corresponding CXR after treatment: the image returned to normal; (a2) corresponding LUS before treatment: the images were normal, and no B-lines were detected; (b) CXR before treatment: densified hilar shadows and small patch shadows can be observed in the upper left lung (white arrow); (b1) corresponding CXR after treatment: the image returned to normal; (b2) corresponding LUS before treatment: only a few B-lines (B-line score = 2) were detected.