RESUMEN
Ultrasound-guided thoracic nerve block plays an important role in anesthesia and analgesia, but it is not easy to be mastered. This article discusses the application value of flipped classroom combined with 3D Body anatomy software for anesthesia specialty residents to learn ultrasound-guided thoracic paravertebral nerve block. This innovative education model includes three parts: before class, during class and after class. Before class, the teachers study the syllabus and make teaching micro-videos, and the cross-sectional anatomy added into the 3D Body anatomy software helps the residents understand. During class, teachers divide the residents into groups to report and exchange their learning experience, organize discussions, and finally give them comments. After class, the instructor will assign homework, assess the residents, and evaluate their satisfaction. This teaching model helps residents master the ultrasound-guided thoracic nerve block, and obtains satisfactory evaluation from the trainees, which is helpful for promotion.