Study Selection
All abstracts were reviewed by Nanjun Zhang, Linlin Zhang, Liting Tang,
Shuran Shao, Qinhui Wang, Li Zhao, Xiaoliang Liu and checked by Chuan
Wang. Disagreement was resolved between the two reviewers.
Full texts of eligible articles were
retrieved for review. If there are studies that report ultrasound
methods for assessing LV chamber stiffness or myocardial stiffness, they
should be included.