Fig. 1

Lung Lung Sound Auscultation Trainer “LUNG” ver.2, a mannequin simulator for lung sound auscultation. This auscultation simulator allows multiple case scenarios to be selected via a wirelessly connected control device, enabling the playback of auscultation sounds on both the anterior and posterior chest of the mannequin. Learners can place their own stethoscope directly on the mannequin to hear corresponding sounds at designated anatomical locations. While there is no chest wall movement associated with breathing, a blue light on the device indicates inhalation timing, helping to identify respiratory phases during auscultation