Left Atrial Appendage Ejection Flow Waves in Differentiation of Atrial Flutter from Atrial Fibrillation

Kamran  Aghasadeghi; Bahman  Malekzadeh; Armin Attar

International Cardiovascular Research Journal

The Official Annually Journal of Cardiovascular Research Center, Shiraz University of Medical Sciences

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Left Atrial Appendage Ejection Flow Waves in Differentiation of Atrial Flutter from Atrial Fibrillation

Author(s):

Kamran Aghasadeghi

^{1, 2},

Bahman Malekzadeh^{1, 3},

Armin Attar

^1,*

1Department of Cardiovascular Medicine, Shiraz University of Medical Sciences, Shiraz, IR Iran

2Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz, IR Iran

3Students’ Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran

International Cardiovascular Research Journal:Vol. 13, issue 2; 50-55

Published online:Jun 01, 2019

Article type:Research Article

Received:May 20, 2018

Accepted:May 04, 2019

How to Cite:Aghasadeghi K, Malekzadeh B, Attar A. Left Atrial Appendage Ejection Flow Waves in Differentiation of Atrial Flutter from Atrial Fibrillation. Int Cardiovasc Res J. 2019;13(2):e79424. doi:

Abstract

Background:

Atrial Flutter (AFL) and Atrial Fibrillation (AF) are among the most common supraventricular tachyarrhythmias. Sometimes, differentiation of the two arrhythmias using surface electrocardiography becomes difficult.

Objectives:

This study aimed to compare the Left Atrial Appendage (LAA) ejection flow waves of AFL and AF to determine whether it can serve as a method for differentiating the two arrhythmias.

Methods:

This cross-sectional study was conducted on 20 patients with AF and 20 ones with AFL selected via simple sampling method. During Trans-Esophageal Echocardiography (TEE), pulsed Doppler sampling was laid 1 cm inside the LAA and pattern of LAA ejection flow waves was recorded in terms of rate (number per minute), velocity (centimeter per second), and regularity. The two groups were compared using Mann-Whitney U-test. P ≤ 0.05 was considered to be statistically significant.

Results:

The rate of LAA ejection flow waves was 493.75 ± 50.57 in the AF group and 303.50 ± 16.31 in the AFL group (P < 0.001). Besides, the mean velocity was 0.172 ± 0.069 m/s in the AF group and 0.302 ± 0.106 m/s in the AFL group (P < 0.001). Velocity more than 0.17 m/s had a sensitivity of 95.0% (95% CI, 75.1 - 99.2%), specificity of 70.0% (95% CI, 45.7 - 88.0%), positive predictive value of 76.0%, and negative predictive value of 93.03% for diagnosing AFL. All patients in the AF group had irregular patterns, but all those in the AFL group had regular patterns.

Conclusion:

Since TEE is a usual part for evaluation of patients suspected to have AF or AFL, it may be helpful for differentiating AFL from AF by examining LAA ejection flow waves.

Keywords

Atrial Flutter

Atrial Fibrillation

Transesophageal Echocardiography

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References

1.
The references are available in PDF.

Comparison of transesophageal echocardiographic assessment of right and left atrial appendage functions

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Author(s):

Kamran Aghasadeghi:[PubMed][Scholar]
Bahman Malekzadeh:[PubMed][Scholar]
Armin Attar:[PubMed][Scholar]

The Official Annually Journal of Cardiovascular Research Center, Shiraz University of Medical Sciences

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Left Atrial Appendage Ejection Flow Waves in Differentiation of Atrial Flutter from Atrial Fibrillation

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