Three-Dimensional Echocardiographic Assessment of Left Heart Chamber Size and Function with Fully Automated Quantification Software in Patients with Atrial Fibrillation - 04/10/16
Abstract |
Background |
Echocardiographic determination of left heart chamber volumetric parameters by using manual tracings during multiple beats is tedious in atrial fibrillation (AF). The aim of this study was to determine the usefulness of fully automated left chamber quantification software with single-beat three-dimensional transthoracic echocardiographic data sets in patients with AF.
Methods |
Single-beat full-volume three-dimensional transthoracic echocardiographic data sets were prospectively acquired during consecutive multiple cardiac beats (≥10 beats) in 88 patients with AF. In protocol 1, left ventricular volumes, left ventricular ejection fraction, and maximal left atrial volume were validated using automated quantification against the manual tracing method in identical beats in 10 patients. In protocol 2, automated quantification–derived averaged values from multiple beats were compared with the corresponding values obtained from the indexed beat in all patients.
Results |
Excellent correlations of left chamber parameters between automated quantification and the manual method were observed (r = 0.88–0.98) in protocol 1. The time required for the analysis with the automated quantification method (5 min) was significantly less compared with the manual method (27 min) (P < .0001). In protocol 2, there were excellent linear correlations between the averaged left chamber parameters and the corresponding values obtained from the indexed beat (r = 0.94–0.99), and test-retest variability of left chamber parameters was low (3.5%–4.8%).
Conclusions |
Three-dimensional transthoracic echocardiography with fully automated quantification software is a rapid and reliable way to measure averaged values of left heart chamber parameters during multiple consecutive beats. Thus, it is a potential new approach for left chamber quantification in patients with AF in daily routine practice.
Le texte complet de cet article est disponible en PDF.Highlights |
• | Excellent correlations of LV volumes, LVEF, and maximal LA volume between fully automated quantification software and the manual method were observed in beat-to-beat analysis in patients with AF. |
• | The time required for analysis with the automated quantification method was significantly less compared with the manual method. |
• | Excellent correlations were also noted between averaged left chamber parameters and the corresponding values obtained from the index beat. |
• | Three-dimensional TTE imaging with fully automated software is a new potential approach to quantify left chamber size and function in patients with AF. |
Keywords : Atrial fibrillation, Echocardiography, Cardiac volume
Abbreviations : 2D, 3D, AF, HR, IQR, LA, LAVmax, LV, LVEDV, LVEF, LVESV, TTE
Plan
| Drs. Lang and Takeuchi received a research grant from Philips Healthcare. Dr. Salgo is an employee of Philips Healthcare. |
Vol 29 - N° 10
P. 955-965 - octobre 2016 Retour au numéro
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