Fig. 3

Examples of cardiac ultrasound performed by nurses. a. Parasternal long axis view demonstrating mitral regurgitation. This image was categorised adequate quality. b. Apical 5 chamber view demonstrating aortic regurgitation. The regurgitation was not identified by the nurse. This image was categorised poor quality. c and d. Parasternal long axis view demonstrating closing volume. Color is seen across the mitral valve in single frame at the time of valve closure, but not in mid-systole