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ECHOCARDIOGRAPHIC SPECKLE TRACKING CHARACTERISTICS OF LEFT ATRIUM IN HYPERTENSIVE PATIENTS WITH PAROXYSMAL ATRIAL FIBRILLATION
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Abstract
The aim of the study was to find out the differences in left atrial size and function on speckle tracking echocardiography in hypertensive patients with/without paroxysmal atrial fibrillation. Subjects and methods: During the study period, we collected data from 39 hypertensive patients with atrial fibrillation and 45 hypertensive patients without atrial fibrillation as a control group. Results: The hypertensive patients with atrial fibrillation were more obese than the group without atrial fibrillation (BMI: 22.40 ± 2.97 versus 20.42 ± 2.61 kg/m2; p< 0.05). The hypertensive group with atrial fibrillation had a larger left atrial volume index than the hypertensive group without atrial fibrillation (50.7±21.9 vs 46.3±19.1; p<0 ,05). The positive LA strain in both 2-chamber and 4-chamber views (indicating LA reservoir function) was higher in the hypertensive group with AF compared with the hypertensive group without atrial fibrillation. In the group of hypertensive patients with atrial fibrillation, there was the obvious dys-synchrony in reservoir and conduit functions, while the difference in pumping function was not statistically significant. Conclusion: Left atrial function (reservoir, conduit and pump) on speckle tracking echocardiography reduced in both patients with hypertension and atrial fibrillation. When patients with hypertension and AF, the LA pump function is lost, the blood conduction function is decreased and the reservoir function is increased. In patients with hypertension and paroxysmal atrial fibrillation, the contractility synchrony impaired
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Keywords
hypertension, atrial fibrillation, strain, strain rate
References
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