Key result
Left atrial reservoir strain was significantly higher in patients examined in sinus rhythm compared to those in atrial fibrillation (20.2% vs 6.5%), with a cut-off ≥13.25% strongly predicting the maintenance of sinus rhythm.
Why the study?
The study sought to determine left atrial strain values in patients with AF and identify a parameter capable of predicting sinus rhythm maintenance.
Does left atrial reservoir strain measured by 2D speckle tracking echocardiography predict the maintenance of sinus rhythm in patients with atrial fibrillation?
Cross-Sectional (n=60)
No
Does left atrial reservoir strain measured by 2D speckle tracking echocardiography predict the maintenance of sinus rhythm in patients with atrial fibrillation?
Absolute Event Rate: 20.2% vs 6.505%
p-value: p=<0.001
Left atrial reservoir strain measured by 2D speckle tracking echocardiography is a strong predictor of sinus rhythm maintenance in patients with atrial fibrillation.
LA reservoir strain may predict sinus rhythm maintenance in AF; hypothesis-generating and requires prospective validation before practice change.
Objectives . In this study we tried to determine the values of the left atrial (LA) strain in patients with atrial fibrillation (AF) and set a parameter that could be a predictor of sinus rhythm (SR) maintenance. Study population. We included 60 patients with left ventricular ejection fraction (LVEF) ≥50% - 33 (55%) of them were known to have in their personal history AF (newly diagnosed, paroxysmal and persistent) and they were examined at SR. The second group was represented by 27 (45%) patients that were examined in AF. Using two dimensional speckle tracking echocardiography (2D STE) it was quantified the strain of the 3 functions that characterize the physiology of the LA - reservoir, conduct and pump in the apical sections, mentioning that the pump was absent in patients examined in AF. Results. The average of the reservoir (R%) for all sections had a significantly higher value in patients with SR (20,2±6,225%) compared to patients examined in AF (6,505±2,66%): P<0.001. With the help of the logistic regression model was observed that only systolic LA strain had the highest predictive power of maintenance of SR. The cutt off value of ≥13,25% of the R% has a sensitivity (Se) and a specificity (Sp) of 90,9%, respectively 100% for maintenance of SR. Conclusions. In the present study, after analyzing all the parameters that were associated between the 2 groups, it was found that only R %, as the only variable, has the highest predictor power for maintenance of SR.
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Toplicianu et al. (2019) conducted a cross-sectional in Atrial Fibrillation (n=60). Sinus rhythm vs. Atrial fibrillation was evaluated on Left atrial reservoir strain (R%) (p=<0.001). Left atrial reservoir strain was significantly higher in patients examined in sinus rhythm compared to those in atrial fibrillation (20.2% vs 6.5%), with a cut-off ≥13.25% strongly predicting the maintenance of sinus rhythm.
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