Going beyond classic echo in aortic stenosis: left atrial mechanics, a new marker of severity

Table 4 Multivariate regression model for discriminating the effect of the severity of AS versus atrial fibrillation by several strain parameters

Multivariate regression model	β-coefficient	95% CI	P-value
LV-GLS (%)
sAS	1.48	0.2; 2.7	0.021
AF	1.9	0.4; 3.3	0.012
LA ɛsys (%)
sAS	−9.31	−11.3; −7.3	< 0.001
AF	−4.55	−6.8; −2.3	< 0.001
LA ɛe (%)
sAS	−4.9	−6.22; −3.7	< 0.001
AF	−0.9	− 2.3; 0.6	0.248
LA ɛa (%)
sAS	−4.5	−5.7; − 3.2	< 0.001
AF	−3.6	−5.1; −2.1	< 0.001

AF atrial fibrillation, LA ɛsys left atrial systolic strain (reservoir function), LA ɛe left atrial early diastolic strain (conduit function), LA ɛa left atrial late diastolic strain (contractile function), LA SRs left atrial systolic strain rate (reservoir function), LA SRe left atrial early diastolic strain rate (conduit function), LA SRa left atrial late diastolic strain (contractile function), LV-GLS left ventricular global longitudinal strain, sAS severe aortic stenosis

ISSN: 1471-2261