Study protocol
inferior vena cava
All participants received a standardized 8-minute video instruction developed by the researchers, including a video made by the ultrasound device developer (Sonosite) explaining the inferior vena cava (IVC) IVC exam, with an overview of the anatomy of the aorta and the IVC (this anatomy has already been taught previously in medical school) and an instruction for visualizing these structures [
setup of the game. (