AIMS: To define accurate and normal range of echocardiographic left atrial (LA) volume measurement and to assess the prevalence, determinants, and outcome implications of LA enlargement in mitral regurgitation (MR). METHODS AND RESULTS: We prospectively compared LA volume obtained simultaneously by electron beam-computed tomography (EBCT) and by four echocardiographic methods in 33 test patients. Accurate echocardiographic LA volume measurements were obtained only by biplane area-length method with vertical longitudinal-length (r = 0.95, P < 0.0001; 145 +/- 57 vs. 143 +/- 55 mL, P = 0.57). Using this method, the normal range in 100 normal subjects, the physiological determinants and outcome implications of LA enlargement in 320 patients with organic MR were analysed. In normal subjects, indexed to body surface area, LA index (27 +/- 6 mL/m(2)) was not influenced by age or gender and values > or = 40 mL/m(2) were beyond the upper limit of normal. In MR, the most powerful determinants of LA enlargement were higher regurgitant volume (RVol) and atrial fibrillation (AF) (P < 0.0001), followed by older age, female gender, higher left ventricular end-systolic volume, and mass (all P < 0.001). After diagnosis in sinus rhythm, LA index > or = 40 mL/m(2) predicted superiorly and independently to LA diameter the occurrence of AF [adjusted RR 1.48 (1.06-2.16), P < 0.01] and the combined endpoint of death or need for mitral surgery [adjusted RR 1.61 (1.3-2.0), P < 0.0001]. CONCLUSION: LA remodelling can be accurately assessed by echocardiography and LA index > or = 40 mL/m(2) is beyond the normal range. In organic MR, higher LA index is the combined result of multiple physiological effects, provides independent prognostic information, and therefore should be part of a comprehensive echocardiographic examination.
AIMS: To define accurate and normal range of echocardiographic left atrial (LA) volume measurement and to assess the prevalence, determinants, and outcome implications of LA enlargement in mitral regurgitation (MR). METHODS AND RESULTS: We prospectively compared LA volume obtained simultaneously by electron beam-computed tomography (EBCT) and by four echocardiographic methods in 33 test patients. Accurate echocardiographic LA volume measurements were obtained only by biplane area-length method with vertical longitudinal-length (r = 0.95, P < 0.0001; 145 +/- 57 vs. 143 +/- 55 mL, P = 0.57). Using this method, the normal range in 100 normal subjects, the physiological determinants and outcome implications of LA enlargement in 320 patients with organic MR were analysed. In normal subjects, indexed to body surface area, LA index (27 +/- 6 mL/m(2)) was not influenced by age or gender and values > or = 40 mL/m(2) were beyond the upper limit of normal. In MR, the most powerful determinants of LA enlargement were higher regurgitant volume (RVol) and atrial fibrillation (AF) (P < 0.0001), followed by older age, female gender, higher left ventricular end-systolic volume, and mass (all P < 0.001). After diagnosis in sinus rhythm, LA index > or = 40 mL/m(2) predicted superiorly and independently to LA diameter the occurrence of AF [adjusted RR 1.48 (1.06-2.16), P < 0.01] and the combined endpoint of death or need for mitral surgery [adjusted RR 1.61 (1.3-2.0), P < 0.0001]. CONCLUSION: LA remodelling can be accurately assessed by echocardiography and LA index > or = 40 mL/m(2) is beyond the normal range. In organic MR, higher LA index is the combined result of multiple physiological effects, provides independent prognostic information, and therefore should be part of a comprehensive echocardiographic examination.
Authors: Antonio Sorgente; Quynh A Truong; Cristina Conca; Jagmeet P Singh; Udo Hoffmann; Francesco F Faletra; Catherine Klersy; Rinky Bhatia; Giovanni B Pedrazzini; Elena Pasotti; Tiziano Moccetti; Angelo Auricchio Journal: Am J Cardiol Date: 2008-07-10 Impact factor: 2.778
Authors: Seisyou Kou; Luis Caballero; Raluca Dulgheru; Damien Voilliot; Carla De Sousa; George Kacharava; George D Athanassopoulos; Daniele Barone; Monica Baroni; Nuno Cardim; Jose Juan Gomez De Diego; Andreas Hagendorff; Christine Henri; Krasimira Hristova; Teresa Lopez; Julien Magne; Gonzalo De La Morena; Bogdan A Popescu; Martin Penicka; Tolga Ozyigit; Jose David Rodrigo Carbonero; Alessandro Salustri; Nico Van De Veire; Ralph Stephan Von Bardeleben; Dragos Vinereanu; Jens-Uwe Voigt; Jose Luis Zamorano; Erwan Donal; Roberto M Lang; Luigi P Badano; Patrizio Lancellotti Journal: Eur Heart J Cardiovasc Imaging Date: 2014-01-21 Impact factor: 6.875
Authors: Stefan A Lange; Bernd Ebner; Astrid Wess; Matthias Kögel; Mieczyslaw Gajda; Thomas Hitschold; Jens Jung Journal: Clin Res Cardiol Date: 2012-01-17 Impact factor: 5.460
Authors: A Rossi; F L Dini; E Agricola; P Faggiano; G Benfari; P L Temporelli; C Cucco; L Scelsi; C Vassanelli; S Ghio Journal: J Echocardiogr Date: 2018-02-23