scholarly journals Difference in left atrial D-dimer level in patients with atrial fibrillation treated with direct oral anticoagulant

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Tetsuya Watanabe ◽  
Koichi Tachibana ◽  
Yukinori Shinoda ◽  
Tomoko Minamisaka ◽  
Hidetada Fukuoka ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrium ◽  
Left Atrial ◽  
Venous Blood ◽  
Anticoagulation Therapy ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
Echocardiographic Parameters ◽  
D Dimer

Abstract Background Atrial fibrillation (AF) may cause cerebral and systemic embolism. An increased D-dimer level indicates hyperactivation of secondary fibrinolysis, resulting in predilection for thrombosis. To clarify the differential effects of anticoagulation therapy, we compared the D-dimer levels in peripheral and left atrial (LA) blood of atrial fibrillation patients scheduled for ablation. Methods We analyzed 141 patients with non-valvular AF (dabigatran, n = 30; apixaban, n = 47; edoxaban, n = 64; mean age: 68 years, male: 60%). Peripheral venous blood and LA blood was collected before pulmonary vein isolation. We examined the laboratory and echocardiographic parameters. Results After adjusting for baseline characteristics, D-dimer level in the LA was significantly higher in patients treated with edoxaban than that in those on apixaban (0.77 ± 0.05 vs. 0.60 ± 0.05 μg/mL, P = 0.047), although there were no significant differences in peripheral D-dimer levels. We classified the D-dimer value of the LA into a normal group (< 0.9) and a high value group (≥ 1.0); the peripheral prothrombin fragment F1 + 2 level (odds ratio [OR] 1.012; 95% confidence interval [CI]: 1.003–1.022; P = 0.008) and left ventricular ejection fraction (LVEF) (OR, 0.947; 95% CI, 0.910–0.986; P = 0.008) were potential predictors of high LA D-dimer levels. Conclusions In apixaban-treated patients, the D-dimer level in the left atrium was lower than in edoxaban-treated patients on the day of ablation, suggesting that the anticoagulant effect of apixaban on the left atrium is better than that of edoxaban in patients with AF.

Abstract 15156: Comparison of Left Atrial D - dimer Level in Patients With Atrial Fibrillation Administering Dabigatran, Apixaban and Edoxaban

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Tetsuya Watanabe ◽  
Kouichi Tachibana ◽  
Yukinori Shinoda ◽  
Tomoko Minamisaka ◽  
Hidetada Fukuoka ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrium ◽  
Left Atrial ◽  
Protein C ◽  
Venous Blood ◽  
Anticoagulation Therapy ◽  
Protein Levels ◽  
Reactive Protein ◽  
Echocardiographic Parameters ◽  
D Dimer

Introduction: Atrial fibrillation causes cerebral infarction and systemic embolism. Increased D-dimer level indicates the hyperactivation of secondary fibrinolysis, showing thrombosis tendency in the vessel. Hypothesis: To clarify the effects of anticoagulation therapy, we planned to compare the D-dimer levels of peripheral and left atrial (LA) blood in patients scheduled for atrial fibrillation ablation during administration of dabigatran (D), apixaban (A) and edoxaban (E). Methods and Results: We analyzed 141 patients with non-valvular atrial fibrillation (D, n=30; A, n= 47; E, n=64; median age: 68[38-84] years, male: 60%) after exclusion of patients on dialysis. Peripheral venous blood was collected immediately before ablation and LA blood was collected immediately after the Brockenbrough method. We examined laboratory and echocardiographic parameters such as D-dimer and protein C levels, and LA diameter. Anticoagulation therapy was discontinued on the day of ablation. There were no significant differences in ejection fraction, LA diameter and peripheral C-reactive protein levels among the three groups treated with D, A and E. After adjusting for baseline characteristics, D-dimer level in the left atrium treated with E was significantly higher among the three groups (D, 0.550±0.078 vs. A, 0.603±0.052 vs. E, 0.774±0.046), although there were no significant differences in peripheral D-dimer levels (Table). Protein C levels of peripheral blood in group E were significantly suppressed among the three groups (D, 130.17±4.84 vs. A, 102.13±3.59 vs. E, 91.92±2.11, p<0.001). Conclusions: In the edoxaban group, the D-dimer level in the left atrium was higher than that in the apixaban group, suggesting that the anticoagulatory effect of left atrium is better in apixaban as compared to edoxaban in patient with non-valvular atrial fibrillation.

scholarly journals Incidence and predictors of left atrial thrombus development in patients scheduled for repeat catheter ablation for atrial fibrillation: Is transesophageal echocardiography always mandatory?

2021 ◽  
Author(s):  
Satoshi Yanagisawa ◽  
Yasuya Inden ◽  
Shuro Riku ◽  
Kazumasa Suga ◽  
Koichi Furui ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Transesophageal Echocardiography ◽  
Left Atrial ◽  
Thrombus Formation ◽  
Imaging Modality ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Imaging Evaluation ◽  
Ventricular Ejection Fraction

Introduction: The risk of developing left atrial (LA) thrombi after initial catheter ablation for atrial fibrillation (AF) and requirements for imaging evaluation for thrombi screening at repeat ablation is unclear. This study aimed to assess the occurrence of thrombus development and frequency of any imaging study evaluating thrombus formation during repeat ablation for AF. Methods: Of 2,066 patients undergoing initial catheter ablation for AF with uninterrupted oral anticoagulation, 615 patients underwent repeat ablation after 258.0 (105.0-882.0) days. We investigated which factors were associated with safety outcomes and requirements for thrombi screening. Results: All patients underwent at least one imaging examination to screen for thrombi in the first session, but the examination rate decreased to 476 patients (77%) before the repeat procedure. The frequency of imaging evaluations was 5.0%, 11%, 21%, 84%, and 91% for transesophageal echocardiography and 18%, 33%, 49%, 98%, and 99% for any imaging modality at repeat ablation performed ≤60 days, ≤90 days, ≤180 days, >180 days, and >1 year after the initial procedure, respectively. Three patients (0.5%) developed LA thrombi at repeat ablation due to identifiable causes, and no patients had thromboembolic events when no imaging evaluation was performed. Multivariate analysis revealed that repeat ablation >180 days, non-paroxysmal atrial arrhythmias, and lower left ventricular ejection fraction were predictors of the risk of thrombus development. Conclusions: The risk development of thrombus at repeat ablation for AF was low. There needs to be a risk stratification for the requirement of imaging screening for thrombi at repeat ablation for AF.

scholarly journals HOLTER MONITORING AND ECHOCARDIOGRAPHY FOR PREDICTING THE EFFECTIVENESS OF PULMONARY VIEN ISOLATION IN PATIENTS WITH PAROXYSMAL AND PERSISTENT ATRIAL FIBRILLATION

2018 ◽  
Vol 7 (3) ◽  
pp. 12-23
Author(s):  
A. V. Tregubov ◽  
Yu. V. Shubik
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Persistent Atrial Fibrillation ◽  
Holter Monitoring ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Left Atrial Size ◽  
Ventricular Ejection Fraction ◽  
Atrial Size ◽  
The Impact

Aim. To evaluate the impact of the atrial ectopic activity and left ventricular diastolic dysfunction on predicting the effectiveness of pulmonary vein isolation (PVI) in patients with paroxysmal and persistent atrial fibrillation (AF).Methods. 54 patients with paroxysmal and persistent AF and the normal left ventricular ejection fraction were included in the study. Patients underwent Holter monitoring and echocardiography prior to the intervention to identify the predictors of successful PVI. The follow-up was 12 months after the indexed procedure. The effectiveness of treatment was assessed from the third month of the postoperative period. The criterion of the successful treatment was the absence of the AF paroxysms lasting more than 30 seconds, confirmed by Holter, diurnal and / or multi-day monitoring. The Student's t-test was used to assess the reliability of the differences between the variables characterizing the treatment results in the study groups. The discriminant analysis was performed to develop an algorithm that allows predicting the PVI result. A p value <0.05 was considered statistically significant.Results. Premature atrial contraction over 70 per hour can be considered as the predictor of the successful PVI in patients with normal left atrial size. The severe LA enlargement should be considered as a predictor of poor ablation efficacy. The obtained discriminant function allows predicting the effectiveness of PVI in patients with paroxysmal and persistent AF depending on Holter monitoring and echocardiography. Its sensitivity is high for both predicting success and failure of the intervention.Conclusion. Holter monitoring and echocardiography allow predicting the effectiveness of PVI. The intervention's efficacy in the groups of patients with severe LA enlargement and the combination of normal left atrial size with over 70 PAC per hour should be addressed in the further studies.

P3764Morphological mechanisms of atrial functional mitral regurgitation in patients with atrial fibrillation

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
K Nagaoka ◽  
Y Mukai ◽  
S Kawai ◽  
S Takase ◽  
K Sakamoto ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Ventricular Ejection Fraction ◽  
Mitral Regurgitation ◽  
Left Atrial ◽  
Left Ventricular ◽  
Volume Index ◽  
Left Ventricular Ejection ◽  
Functional Mitral Regurgitation ◽  
Mitral Leaflet ◽  
Ventricular Ejection Fraction

Abstract Background Atrial functional mitral regurgitation (AFMR) occurs in patients with atrial fibrillation. However, morphological mechanisms of AFMR are poorly understood. Purpose The purpose of this study was to examine the morphological characteristics in patients with AFMR. Methods Among consecutive 795 patients undergoing initial radiofrequency catheter ablation (RFCA) at our hospital, twenty-five patients with persistent AF accompanied by AFMR (≥ moderate) before RFCA (AFMR group) were studied. Age-matched 25 patients with persistent AF without MR were defined as a control group. Results Left ventricular ejection fraction (LVEF) was lower and left atrium volume index was larger in the AFMR group (Table). Mitral valve annulus diameter and length of anterior mitral leaflet (AML) were similar between groups, whereas length of posterior mitral leaflet (PML) was significantly shorter in the AFMR group. Smaller tethering angle of AML (γ in the figure) and shorter tethering height were significantly associated with the occurrence of AFMR, which were different from morphology of functional mitral regurgitation in patients with dilated LV. Multiple regression analysis revealed that less tenting height (p<0.05) and LA dilatation toward the posterior (p<0.01) were significantly related to AFMR. Echocardiographic parameters AFMR (n=25) Control (n=25) P value Age, y 69±8 66±10 NS Male, n (%) 9 (36) 20 (80) P=0.001 LVEF,% 60±9 67±6 P=0.004 LAD, mm 44±5 41±7 NS LAVI, ml/m2 56±17 41±13 P<0.001 MV diameter, mm 3.9±0.4 3.8±0.5 NS α angle, ° 34±9 35±7 NS β angle, ° 48±9 50±8 NS γ angle, ° 32±5 37±5 P=0.0005 AML length, mm 3.0±0.5 3.0±0.5 NS PML length, mm 2.1±0.1 2.4±0.1 P=0.03 Tenting height, mm 1.5±0.1 1.8±0.1 P=0.02 D, mm 0.8±0.3 0.5±0.3 P=0.001 LVEF: left ventricular ejection fraction; LAD: left atrial diameter; LAVI: left atrial volume index; AML: anterior mitral leaflet; PML: posterior mitral leaftlet. Conclusions AFMR occurs in patients with unique morphological features, such as less tethering height and LA dilatation toward the posterior.

scholarly journals THE PREDICTION OF ATRIAL FIBRILLATION IN PATIENTS WITH ARTERIAL HYPERTENSION

2013 ◽  
Vol 68 (11) ◽  
pp. 26-29
Author(s):  
N. E. Grigoriadi ◽  
L. M. Vasilets ◽  
A. V. Tuev ◽  
E. A. Ratanova ◽  
O. V. Khlynova ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Ventricular Ejection Fraction ◽  
Ejection Fraction ◽  
Body Surface ◽  
Left Atrial ◽  
Prognostic Value ◽  
Left Ventricular ◽  
The Body ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction

Aim. To study the parameters of the structural and functional state of the myocardium in patients with hypertension, to determine their prognostic value on the risk of atrial fibrillation (AF). Patients and methods: the study involved 72 people: patients with hypertension and AF, with isolated hypertension and apparently healthy individuals. All of them performed echocardiography, blood pressure monitoring and monitoring of cardiogram. Results: the dilatation of left atrial was founded: patients with the atrial fibrillation on the background of hypertension observed the most pronounced changes in the left atrial. In patients with hypertension without arrhythmias and in combination with atrial fibrillation severe left ventricular hypertrophy was observed. Left ventricle systolic function in groups has been stored but in patients with atrial fibrillation on the background of hypertension was significantly lower. The risk of atrial fibrillation in patients with hypertension prognostic value are the only values of the age, the volume index of the left atrial to the body surface area and left ventricular ejection fraction. Conclusions. The risk of AF in hypertension occurs over the age of 55 and each subsequent year increases it in 1,2 times,  it increases with an index value of the left atrial to the body surface over 29 ml/m2 and with a decrease in left ventricular ejection fraction less than 58%. 

P1027Left atrial hypertension invasively measured during pulmonary vein isolation as a predictor of atrial fibrillation recurrence

EP Europace ◽  
2020 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
M Manfrin ◽  
G Mugnai ◽  
G B Chierchia ◽  
C Bilato ◽  
W G Rauhe
Keyword(s):  
Atrial Fibrillation ◽  
Multivariate Analysis ◽  
Ejection Fraction ◽  
Pulmonary Vein ◽  
Left Atrial ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
P Value ◽  
Drug Resistant ◽  
Ventricular Ejection Fraction

Abstract Background The clinical role of left atrial hypertension (LAH) in patients with atrial fibrillation (AF) and its role as predictor in those undergoing pulmonary vein (PV) isolation is still unknown. Purpose The aim of the present study was to analyse the prevalence of LAH in patients with nonvalvular AF and preserved left ventricular ejection fraction having undergone PV isolation and its implication for AF catheter ablation. Methods Consecutive patients with drug resistant AF who underwent PV isolation at San Maurizio Regional Hospital of Bolzano (Italy) as index procedure were retrospectively included in this analysis. Left atrial hypertension was defined as the LA mean pressure &gt;15 mm Hg. Results A total of 98 consecutive patients (71 males, 72%; mean age 60.3 ± 8.4 years) with drug resistant, non valvular AF and preserved LV ejection fraction having undergone index PV isolation procedure were included in the analysis. Eleven patients (11%) underwent radiofrequency ablation and 87 (89%) cryoballoon ablation. The mean LA pressure was 10.7 ± 4.5 mmHg; LAH occurred in 24 (24%) patients. At a mean follow up of 14.6 ± 7.1 months (median 14 months), the success rate without antiarrhythmic therapy was 71.4% (70/98; considering the blanking period). On multivariate analysis, LAH remained the only independent predictor of definitive AF recurrence (HR 3.02, 1.36-6.72, p = 0.007). Conclusion Left atrial hypertension was found in 24% of patients undergoing PV isolation and was found to be significantly related to both early and late AF recurrences. Univariate and multivariate Cox regressi Univariate analysis Multivariate analysis Early Recurrence (during BP) HR 95%CI P value HR 95%CI P value Age (years) 1.06 1.02-1.10 0.005 1.05 1.00-1.09 0.03 LA volume (ml/m2) 1.02 1.00-1.05 0.04 1.02 1.00-1.05 0.05 LA hypertension 2.46 1.32-4.57 0.004 1.97 1.03-3.79 0.04 Recurrence after the BP HR 95%CI P value HR 95%CI P value Age (years) 1.05 1.00-1.11 0.04 1.04 0.98-1.09 0.15 LA hypertension 3.51 1.62-7.60 0.001 3.02 1.36-6.72 0.007 BP recurrence 1.83 0.84-3.99 0.13 AF atrial fibrillation. BMI: body mass index. LA: left atrium. CAD: coronary artery disease. BP: blanking period. HR: hazard ratio. CI: confidence intervals.

GENERAL CARDIOVASCULAR RISK AND FUNCTIONAL INDICATORS OF THE PERMANENT ATRIAL FIBRILLATION

2019 ◽  
Vol 72 (12) ◽  
Author(s):  
Larysa O Martymianova ◽  
Tetiana M Tykhonova ◽  
Olga Yu. Bychkova ◽  
Nataliia V Lysenko ◽  
Nadiya Ye Barabash
Keyword(s):  
Atrial Fibrillation ◽  
Cardiovascular Risk ◽  
Left Ventricular ◽  
Left Ventricular Ejection ◽  
Power Indices ◽  
Ventricular Ejection Fraction ◽  
Functional Parameters ◽  
Increased Risk ◽  
Medical Diagnostic ◽  
Echocardiographic Parameters

Introduction: No doubt today that atrial fibrillation (AF) is associated with an increased risk of thromboembolic events. Simultaneously we did not find any investigation about the links between general cardiovascular risk (GCVR) and the frequency forms and functional parameters of the heart in patients with AF. The aim:To study the frequency forms and functional indices of the heart in patients with permanent AF in GCVR groups. Materials and methods: 157 patients with permanent AF (99 men and 58 women) aged 64.6 ± 9.7 years were examined. The frequency of ventricular contractions, the duration of the ventricular complex (QRS), the corrected QT interval (QTc), power indices of the spectrum of heart rate variability (HRV) were measured by ECG. Echocardiographic parameters were studied using a SIM 5000 plus medical diagnostic automated echocardiograph. Patients were classified into GCVR groups. Results and conclusions: The existence of relationships of GCVR with frequency forms of AF and functional indicators of the heart was established. In patients of the class I-III GCVR groups, the tachysystolic form of AF prevailed. Its frequency increases with the rise of the GCVR class. In GCVR IV, redistribution of forms of AF occurs in the direction of normosystolic ones. Among the functional parameters of the heart, the left ventricular ejection fraction and the power of the HRV spectra are most closely associated with GCVR.

Abstract 17788: Association of Left Atrial Function and Left Atrial Fibrosis in Patients with Atrial Fibrillation: a Cardiac Magnetic Resonance Study

Circulation ◽  
2014 ◽  
Vol 130 (suppl_2) ◽  
Author(s):  
Mohammadali Habibi ◽  
Joao Lima ◽  
Irfan Khurram ◽  
Stefan L Zimmerman ◽  
Vadim Zipunnikov ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Cardiac Magnetic Resonance ◽  
Magnetic Resonance ◽  
Left Atrial ◽  
Feature Tracking ◽  
Left Ventricular ◽  
Volume Index ◽  
Left Ventricular Ejection ◽  
Ventricular Ejection Fraction ◽  
Physiological Importance

Introduction: Atrial fibrillation (AF) is associated with left atrial (LA) electrical, structural, and contractile remodeling. Cardiac magnetic resonance (CMR), late gadolinium enhancement (LGE) and feature tracking are capable of noninvasive quantification of LA fibrosis and myocardial motion, respectively. Hypothesis: Increased LA fibrosis measured with LGE is associated with worsening of the phasic LA function measured with feature tracking CMR. Methods: The cohort included 90 patients (age 61 ± 10 years, 76% male) with symptomatic drug-resistant AF referred for ablation. Peak global longitudinal LA strain (PLAS), LA systolic strain rate (SR-s), and early (SR-ed) and late diastolic (SR-ld) strain rates were measured using cine-CMR images acquired during sinus rhythm. The degree of LGE was quantified using normalized image intensity. Results: Compared to patients with paroxysmal AF (60% of cohort), those with persistent AF had larger maximum LA volume index (LAVImax, 56 ± 17ml/m2 versus 49 ± 13ml/m2 p=0.036), and increased LGE (27.1± 11.7% versus 36.8 ± 14.8% p<0.001). Aside from LA active emptying fraction, all LA parameters (passive emptying fraction, PLAS, SR-s, SR-ed and SR-ld) were lower in patients with persistent AF (p< 0.05 for all). Increased LA fibrosis was associated with lower LA passive emptying fraction, PLAS, SR-s, SR-ed, and SR-ld after adjusting for age, sex, hypertension, heart failure, left ventricular ejection fraction, type of AF, and LA volume (p<0.05 for all). Conclusions: Increased LA fibrosis is associated with decreased LA reservoir, conduit, and booster pump functions. Phasic measurement of LA function using feature-tracking CMR is feasible and may add important information regarding the physiological importance of LA fibrosis.

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