Figure 3.

Maximal depth of consolidated lung determined by thoracic ultrasonography in relation to the clinical score of respiratory disease in 106 calves treated or not for bronchopneumonia. The maximal depth of consolidation (DEPTH) in centimeters has been plotted in relation to the Wisconsin Calf Respiratory Score Chart (clinical score) in previously treated (▼) and nontreated (○) calves. The plot has been divided into 4 different quadrants according to threshold of treatment based on the clinical score (if ≥5, this calf should be treated for respiratory problem, quadrants 2 and 4) and the significant consolidation (DEPTH ≥1 cm, quadrants 3 and 4) (arrows). Quadrant 1: Calves with a normal clinical score and absence of clinically relevant consolidation. Quadrant 2: Calves with a high clinical score and no clinically relevant consolidation. Quadrant 3: Calves with significant consolidation and no clinical suspicion of respiratory disease based on the clinical score. Quadrant 4: Calves with significant consolidation and clinical suspicion of respiratory diseases based on their clinical score.