scholarly journals The Influence of Surgical Weight Reduction on Left Atrial Strain

2021 ◽  
Author(s):  
Jakub Strzelczyk ◽  
Piotr Kalinowski ◽  
Krzysztof Zieniewicz ◽  
Cezary Szmigielski ◽  
Michał Byra ◽  
...  
Keyword(s):  
Bariatric Surgery ◽  
Weight Reduction ◽  
Left Atrial ◽  
Longitudinal Strain ◽  
Systolic Function ◽  
Left Ventricular ◽  
Imaging Biomarker ◽  
Mechanical Function ◽  
Left Atrial Strain ◽  
Atrial Strain

Abstract Background Obesity increases and surgical weight reduction decreases the risk of atrial fibrillation (AF) and heart failure (HF). We hypothesized that surgically induced weight loss may favorably affect left atrial (LA) mechanical function measured by longitudinal strain, which has recently emerged as an independent imaging biomarker of increased AF and HF risk. Methods We retrospectively evaluated echocardiograms performed before and 12.2 ± 2.2 months after bariatric surgery in 65 patients with severe obesity (mean age 39 [36; 47] years, 72% of females) with no known cardiac disease or arrhythmia. The LA mechanical function was measured by the longitudinal strain using the semi-automatic speckle tracking method. Results After surgery, body mass index decreased from 43.72 ± 4.34 to 30.04 ± 4.33 kg/m2. We observed a significant improvement in all components of the LA strain. LA reservoir strain (LASR) and LA conduit strain (LASCD) significantly increased (35.7% vs 38.95%, p = 0.0005 and − 19.6% vs − 24.4%, p < 0.0001) and LA contraction strain (LASCT) significantly decreased (− 16% vs − 14%, p = 0.0075). There was a significant correlation between an increase in LASR and LASCD and the improvement in parameters of left ventricular diastolic and longitudinal systolic function (increase in E’ and MAPSE). Another significant correlation was identified between the decrease in LASCT and an improvement in LA function (decrease in A’). Conclusions The left atrial mechanical function improves after bariatric surgery. It is partially explained by the beneficial effect of weight reduction on the left ventricular diastolic and longitudinal systolic function. This effect may contribute to decreased risk of AF and HF after bariatric surgery. Graphical abstract

scholarly journals Left ventricular strain and left atrial strain are impaired during hemodialysis in children

2021 ◽  
Author(s):  
Tam T. Doan ◽  
Poyyapakkam Srivaths ◽  
Asela Liu ◽  
J. Kevin Wilkes ◽  
Alexandra Idrovo ◽  
...  
Keyword(s):  
Left Atrial ◽  
Left Ventricular ◽  
Left Atrial Strain ◽  
Left Ventricular Strain ◽  
Atrial Strain

Early change in left atrial and left ventricular strain predicts sinus rhythm maintenance after cardioversion

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
K Kupczynska ◽  
D Miskowiec ◽  
B Michalski ◽  
L Szyda ◽  
K Wierzbowska-Drabik ◽  
...  
Keyword(s):  
Sinus Rhythm ◽  
Left Atrial ◽  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Global Longitudinal Strain ◽  
Recurrence Risk ◽  
Left Ventricular ◽  
Mechanical Function ◽  
Af Recurrence

Abstract Background Atrial fibrillation (AF) impairs mechanical function of the heart, especially atria and restoration of sinus rhythm (SR) leads to improvement of mechanics. The predicting role of changes in strain parameters for AF recurrence is not established yet. Purpose To analyse changes in left atrial (LA) and left ventricular (LV) mechanical function after conversion to SR and their prognostic values for AF recurrence during 24 months follow-up. Methods Prospective study involved 59 patients after successful electrical cardioversion (EC) because of nonvalvular AF (mean age 65±4 years, 47% female). Speckle tracking analysis (STE) was applied to calculate longitudinal strain of LV and LA before EC and within 24 hours after restoration of SR and additionally total left heart strain (TS) defined as a sum of absolute peak LV and LA strain. We calculated change in strain between AF and SR analyses expressed as delta (Δ). During follow-up we noticed AF recurrence in 42 (71%) patients, most of them (93%) during 1st year after EC. Median time of AF recurrence was 3 months. Results We noticed significant immediate post-EC improvement in peak LA longitudinal strain (PALS) and LV global longitudinal strain (LVGLS) (table). Unlike CHA2DS2-VASc score, strain parameters were predictors of AF recurrence. Every 1% increment in ΔLVGLS was related with 13% increase in AF recurrence risk (p=0.02) and every 1% increment in ΔPALS and ΔTS were related with 9% decrease in AF recurrence risk (p=0.007 and p=0.0014, respectively). Multivariate analysis revealed ΔTS as a strongest predictor with 9% decrease in AF risk per every 1% increment. The criterion of ΔTS ≤7.5% allows to predict AF recurrence with 81% sensitivity and 63% specificity. Conclusions Speckle tracking measurements are able to detect early mechanical changes in LA even within 24 hours of SR and these absolute changes in LVGLS as well as PALS can predict AF recurrence, with optimal stratification by novel parameter - TS. Funding Acknowledgement Type of funding source: None

scholarly journals Do left atrial strain and strain rate reflect intrinsic atrial function, or are they determined by left ventricular function?

2015 ◽  
pp. 539-548 ◽  
Author(s):  
Andrei Dumitru Margulescu ◽  
Emma Rees ◽  
Rose-Marie Coulson ◽  
Aled D. Rees ◽  
Dragos Vinereanu ◽  
...  
Keyword(s):  
Left Ventricular Function ◽  
Strain Rate ◽  
Ventricular Function ◽  
Left Atrial ◽  
Left Ventricular ◽  
Atrial Function ◽  
Left Atrial Strain ◽  
Strain And Strain Rate ◽  
Atrial Strain

scholarly journals Left Atrial Enlargement in Young High-Level Endurance Athletes – Another Sign of Athlete’s Heart?

2016 ◽  
Vol 53 (1) ◽  
pp. 81-90 ◽  
Author(s):  
Wojciech Król ◽  
Ilona Jędrzejewska ◽  
Marcin Konopka ◽  
Krystyna Burkhard-Jagodzińska ◽  
Andrzej Klusiewicz ◽  
...  
Keyword(s):  
Left Ventricle ◽  
Left Atrial ◽  
Longitudinal Strain ◽  
Athlete’S Heart ◽  
Left Atrial Strain ◽  
Left Atrial Enlargement ◽  
Atrial Enlargement ◽  
Atrial Strain ◽  
High Level ◽  
Athlete's Heart

AbstractEnlargement of the left atrium is perceived as a part of athlete’s heart syndrome, despite the lack of evidence. So far, left atrial size has not been assessed in the context of exercise capacity. The hypothesis of the present study was that LA enlargement in athletes was physiological and fitness-related condition. In addition, we tried to assess the feasibility and normal values of left atrial strain parameters and their relationship with other signs of athlete’s heart. The study group consisted of 114 international-level rowers (17.5 ± 1.5 years old; 46.5% women). All participants underwent a cardio-pulmonary exercise test and resting transthoracic echocardiography. Beside standard echocardiographic measurements, two dimensional speckle tracking echocardiography was used to assess average peak atrial longitudinal strain, peak atrial contraction strain and early left atrial diastolic longitudinal strain. Mild, moderate and severe left atrial enlargement was present in 27.2°%, 11.4% and 4.4% athletes, respectively. There were no significant differences between subgroups with different range of left atrial enlargement in any of echocardiographic parameters of the left ventricle diastolic function, filling pressure or hypertrophy. A significant correlation was found between the left atrial volume index and maximal aerobic capacity (R > 0.3; p < 0.001). Left atrial strain parameters were independent of atrial size, left ventricle hypertrophy and left ventricle filling pressure. Decreased peak atrial longitudinal strain was observed in 4 individuals (3.5%). We concluded that LA enlargement was common in healthy, young athletes participating in endurance sport disciplines with a high level of static exertion and was strictly correlated with exercise capacity, therefore, could be perceived as another sign of athlete’s heart.

scholarly journals Left atrial strain in cardiac amyloidosis

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
A Aimo ◽  
I Fabiani ◽  
V Spini ◽  
V Chubuchny ◽  
E M Pasanisi ◽  
...  
Keyword(s):  
Cardiac Amyloidosis ◽  
Longitudinal Strain ◽  
Systolic Dysfunction ◽  
Global Longitudinal Strain ◽  
Left Ventricular ◽  
Left Atrial Strain ◽  
Funding Sources ◽  
Atrial Contraction ◽  
Amyloid Light Chain ◽  
Atrial Strain

Abstract Background Patients with cardiac amyloidosis (CA) display an enlarged and dysfunctional left atrium (LA), because of the effects of left ventricular (LV) diastolic and then systolic dysfunction, as well as the amyloid infiltration of LA wall. A single study reported impaired LA strain in CA, but differences among amyloid light-chain (AL) and transthyretin (ATTR) CA and the correlates of reduced LA strain have not been characterized. Methods We evaluated 426 consecutive patients undergoing a screening for suspected CA in 2 tertiary referral centres. Among them, 262 (61%) were diagnosed with CA (n=117 AL-CA, n=145 ATTR-CA). We measured peak atrial longitudinal strain (PALS) and peak atrial contraction strain (PACS) from 4- and 2-chamber (4C, 2C) views, and correlated them with maximum and minimum LA volumes, E/e' ratio, and LV global longitudinal strain (GLS). Results LA strain was much more severely impaired in patients with ATTR-CA than those without CA, and to a lesser extent than those with AL-CA (Figure). LA volumes were larger in patients with ATTR-CA than those without CA (maximal LA volume, p=0.042; minimal LA volume, p&lt;0.001), and those with AL-CA (both volumes, p&lt;0.001). LA strain values were more closely correlated with minimal than maximal LA volumes, and patients with AL-CA displayed stronger correlations than those with ATTR-CA or without CA; for example, Spearman's rho values for 4C-PALS vs. minimal LA volume were 0.595, 0.481, and 0.462, respectively (all p&lt;0.001). Furthermore, LA strain correlated with E/e' in patients with AL-CA, but not in those with ATTR-CA: 4C-PALS vs. E/e', rho 0.406, p=0.001 (AL-CA), p=0.401 (ATTR-CA), and p=0.097 (no CA). Finally, LA strain correlated most closely with LV GLS in patients with AL-CA: 4C-PALS vs. LV GLS, rho 0.431, p&lt;0.001 (AL-CA), rho 0.401, p&lt;0.001 (ATTR-CA), rho 0.219, p=0.042 (no CA). Conclusions LA volume increase and reduced LA strain is particularly prominent in patients with ATTR-CA. Patients with AL-CA seem to display closer relationships between LA strain, size and haemodynamic load, possibly reflecting the most acute disease course, and lower time for amyloid deposition in the LA wall. FUNDunding Acknowledgement Type of funding sources: None.

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