Conclusion
Patients with IndtDFx demonstrate a clinical and echocardiographic profile that closely resembles that of patients with DDfx as opposed to NDFx. LA phasic function suggests that IndtDFx is similar to DDFx , helping in re- classification of patients with IndtDFx as DDFx. LA minimal volume index (parameter of LA phasic function) correlated with HF symptoms. Further study is suggested to establish whether functional LA analysis can provide additional information over assessment of conventional measurements.