Relationship Between Left Atrial Appendage Function and Plasma Concentration of Atrial Natriuretic Peptide

Correlation of Right Atrial Appendage Velocity with Left Atrial Appendage Velocity and Brain Natriuretic Peptide

BACKGROUND Left atrial appendage (LAA) anatomy and function have been well characterized both in healthy and diseased people, whereas relatively little attention has been focused on the right atrial appendage (RAA). We sought to evaluate RAA flow velocity and to compare these parameters with LAA indices and with a study of biomarkers, such as brain natriuretic peptide, among patients with sinus...

A Semi-Automated Algorithm for Segmentation of the Left Atrial Appendage Landing Zone: Application in Left Atrial Appendage Occlusion Procedures

Background: Mechanical occlusion of the Left atrial appendage (LAA) using a purpose-built device has emerged as an effective prophylactic treatment in patients with atrial fibrillation at risk of stroke and a contraindication for anticoagulation. A crucial step in procedural planning is the choice of the device size. This is currently based on the manual analysis of the “Device Landing Zone” fr...

Relationship between left atrial appendage function and left atrial thrombus in patients with nonvalvular chronic atrial fibrillation and atrial flutter.

The relationship between the left atrial appendage (LAA) function, as assessed by transesophageal echocardiography, and the incidence of left atrial thrombus was evaluated in 62 patients with nonvalvular chronic atrial fibrillation (AF; n=50) and atrial flutter (AFL; n=12). It was hypothesized that in both AF and AFL not only the LAA flow velocity (LAAFV), but also the frequency of the LAA move...

Close relationship between circumflex artery and left atrial appendage.

A 61-year-old man, with a history of coronary heart disease and percutaneous coronary intervention, with stents in the right coronary and circumflex arteries, was referred to our center for left atrial appendage (LAA) closure. He had atrial fibrillation with high thromboembolic risk (CHA2DS2VASc=4) and oral anticoagulation was formally contraindicated because of recurrent severe bleeding. Selec...

Left Atrial Appendage Function and Stroke Risk.