Multimodality Imaging Assessment of the Severity of Mitral Regurgitation

The fasting patients in anaesthetised receive saline rehydration to maintain central venous pressure of 6-8 cmH2O when undergoing UCG.

UCG is the most common imaging modality to assess the mitral regurgitation in clinical and also is the primary modality recommended by guidelines. At the beginning of the study, the fasting patients receive UCG in the different situation such as pre-anaesthetic, post-anaesthetic and post-rehydration.

CMR may be more accurate than UCG in assessing MR severity. In another time, the patients receive CMR.

At the beginning of the study, the patients need to fast when receive UCG.