"Cardiac strain imaging techniques are able to demonstrate dyssynchronous cardiac strain patterns including early contraction and rebound stretching with other areas displaying pre-stretching and prolonged shortening patterns 1."
"Abnormal findings on electrocardiogram include left bundle branch block morphology and a prolonged QRS duration of ≥150 ms 2-4."
"Atrioventricular dyssynchrony might present with a prolonged PR interval."
"Electrical dyssynchrony refers to a prolonged QRS duration, whereas mechanical dysynchrony is distinct from the latter and characterised by abnormal mechanical contractions with different regional timing and shortening patterns due to abnormal electrical pulse conduction 3,4 resulting in an overall inefficient pump function. In this process some of the cardiac work is lost due to the following 3,4:"
"no additional prognostic information by demonstrating mechanical dyssynchrony was found on top of a wide QRS complex in the selection of patients for cardiac resynchronisation therapy 3"
"Dysynchrony can be subdivided into electrical and mechanical and depending on where it occurs into one of the following 1-7:"
"imaging-based findings e.g. myocardial scar tissue, mitral regurgitation or right ventricular dysfunction are important factors that might require additional or alternative treatment 10"
Expected headings
"Associations"
"Types"
"Echocardiography"
"In the long term, this leads to remodelling on an organic, cellular and molecular basis resulting in structural contractile and electrical alterations of the myocardium such as asymmetric hypertrophy and myocardial fibrosis prolonged activation and repolarisation 3."