Innovative integration of lung ultrasound and wearable monitoring for predicting pulmonary complications in colorectal surgery: A prospective study

Figure 1 Locations of pulmonary ultrasound being recorded on one side. The anterior, lateral, and posterior chest are separated by the anterior/posterior axillary lines.

Figure 2 The pulmonary ultrasound images for different scores. A: 0 points, 0 to 2 B lines; B: 1 point, 3 or more B lines, thickened pleural line; C: 2 points, multiple overlapped B lines, thickened or irregular pleural line.

Figure 3 Comparison of step counts in patients with the largest increase of pulmonary ultrasound between different postoperative days and mean step counts of all patients. A: Patients with the largest increase in pulmonary ultrasound score between postoperative day (POD) 1 and POD2, n = 79, P < 0.05; B: Patients with the largest increase in pulmonary ultrasound score between POD2 and POD3, n = 11, P < 0.05. POD: Postoperative day.