scholarly journals Post-operative left atrial volume index is a predictor of the occurrence of permanent atrial fibrillation after mitral valve surgery in patients who undergo mitral valve surgery

2018 ◽  
Vol 16 (1) ◽  
Author(s):  
Min-Kyung Kang ◽  
Boyoung Joung ◽  
Chi Young Shim ◽  
In Jeong Cho ◽  
Woo-In Yang ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Mitral Valve ◽  
Left Atrial ◽  
Left Atrial Volume ◽  
Mitral Valve Surgery ◽  
Valve Surgery ◽  
Volume Index ◽  
Atrial Volume ◽  
Left Atrial Volume Index ◽  
Permanent Atrial Fibrillation

scholarly journals Variation of Left Atrial Function in Different Stages of Mitral Regurgitation and Its Association With Guidelines-Based Surgical Indication

2020 ◽  
Vol 23 (6) ◽  
pp. E746-E751
Author(s):  
Fengming Bai ◽  
Lingfei Cun ◽  
Bo Li
Keyword(s):  
Mitral Valve ◽  
Mitral Regurgitation ◽  
Left Atrial ◽  
Left Atrial Volume ◽  
Mitral Valve Surgery ◽  
Valve Surgery ◽  
Atrial Function ◽  
Left Atrial Function ◽  
Atrial Volume ◽  
Current Guidelines

Purpose: The current guidelines associate indications for surgery in mitral regurgitation (MR) with left ventricle size and function. However, there is not enough emphasis in current guidelines on left atrial function, which is thought to be an important factor predicting adverse outcomes in MR. The aim of this study was to investigate the left atrial function at different stages of mitral regurgitation and its value in predicting the indications of mitral valve surgery. Methods: This was a retrospective study with 163 consecutive chronic primary MR patients who underwent color doppler echocardiography at the Guangxi Zhuang Autonomous Region Second People's Hospital between January 2016 and June 2018. All patients were in sinus rhythm, classified into three groups, according the degree of mitral regurgitation. Comparison was made with 30 control patients. Using Simpson’s methods, we recorded maximal left atrial volume, left atrial volume before active contraction and minimal left atrial volume, from which left atrial expansion index, left atrial passive emptying fraction, left atrial active emptying fraction, and the total left atrial emptying fraction were derived. Results: Left atrial volume was expanded and left atrial emptying fraction was reduced in the mitral regurgitation group. By multivariate analysis, left atrial passive emptying fraction and left atrial active emptying fraction were independent predictors of mitral regurgitation requiring surgery. Using receiver-operating characteristic analysis, left atrial passive emptying fraction <97.4% demonstrated 98% sensitivity and 67% specificity for predicting the presence of surgical indication (area under the curve: 0.91; P < .001). Conclusion: During mitral regurgitation, left atrial volume increases and functions decrease. The left atrial passive emptying fraction can be used as an additional tool to predict the indications of mitral valve surgery.

scholarly journals ASSOCIATION OF ATRIAL FIBRILLATION AND LEFT ATRIAL VOLUME INDEX WITH MORTALITY IN PATIENTS WITH COVID-19 PNEUMONIA

2020 ◽  
Author(s):  
Antonello D Andrea ◽  
Vincenzo Russo ◽  
Gianluca Manzo ◽  
Valerio Giordano ◽  
Marco Di Maio ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Left Atrial ◽  
Left Atrial Volume ◽  
Volume Index ◽  
Atrial Volume ◽  
Left Atrial Volume Index

Abstract 15589: Relationship Between Left Atrial Volume Index and Left Atrial Appendage Function in Patients With Non-Valvular Atrial Fibrillation and a Cha2ds2-vasc Score of 0-1

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Keisuke Minami ◽  
Masaki Izumo ◽  
Kihei Yoneyama ◽  
Yoshihiro J Akashi
Keyword(s):  
Atrial Fibrillation ◽  
Flow Velocity ◽  
Left Atrial ◽  
Left Atrial Volume ◽  
Low Risk ◽  
Low Flow ◽  
Volume Index ◽  
Atrial Volume ◽  
Left Atrial Volume Index ◽  
Flow Group

Introduction: The management of patients with non-valvular atrial fibrillation (NVAF) and low CHA2DS2-VASc scores remains controversial. Left atrial appendage (LAA) function is a known risk factor for embolisms. Hypothesis: In this study, we aimed to investigate the value of the relationship between transthoracic echocardiography (TTE) parameters and LAA function in low-risk (CHA2DS2-VASc score, 0-1) patients with NVAF. Methods: This retrospective study included 370 consecutive patients with NVAF who underwent both TTE and transesophageal echocardiography (TEE). The LAA emptying flow velocity was assessed using TEE. We established that an LAA emptying flow velocity of <25 cm/s was associated with a high risk of thrombus formation. Results: Of the 370 patients, 146 (40%) had a CHA2DS2-VASc score of 0-1. These patients with low-risk NVAF were further stratified into the low-flow (LAA emptying flow velocity < 25 cm/s, n = 19) and normal-flow (LAA emptying flow velocity ≥ 25 cm/s, n = 127) groups according to LAA function (atrial fibrillation during TEE: n = 63). The age, gender, CHA2DS2-VASc score, and left ventricular ejection fraction did not differ between the two groups. The low-flow group had a significantly greater left atrial volume index (LAVI) than the normal-flow group (51.6 ± 19.8 vs. 32.3 ± 12.1 ml/m2, p < 0.01). A LAVI of 37.8 ml/m2 predicted a LAA emptying flow velocity of <25 cm/s with a sensitivity of 73% and specificity of 83% among patients with low-risk atrial fibrillation (area under the curve, 0.818, p < 0.001, Figure). Conclusions: Approximately 13% of patients with NVAF and CHA2DS2-VASc score of 0-1 had reduced LAA emptying flow velocity as well as left atrial enlargement. The use of LAVI may improve the current embolism risk stratification system among these patients.

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