Echocardiographic assessment of long axis function: a simple solution to a complex problem?

摘要

Circumferential fibre shortening has formed the dominant basis for the conventional analysis of left ventricular func- tion by echocardiography with measurement of ventricular dimensions, ejection fraction, and fractional shortening; however, the complexity of ventricular architecture has been recognised by anatomists for almost two centuries. The presence of additional myocardial fibres oriented in The longitudinal direction and located in the subendocar- Dial, trabecular, and papillary muscle regions of the ventri- Cle has also led to an interest in echocardiographic Assessment of the left ventricular long axis function.