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  • 1 Szent István University Department and Clinic of Internal Medicine P.O. Box 2 H-1400 Budapest Hungary
  • 2 Szent István University Department of Biomathematics and Informatics, Faculty of Veterinary Science P.O. Box 2 H-1400 Budapest Hungary
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The aim of the present study was to verify the validity of two-dimensional echocardiographic (2DE) measurement technique in dogs with left atrial enlargement. Thirty-one dogs with clinically and echocardiographically proven cardiac diseases were randomly selected. The left atrial right-to-left diameter ( La r−l ) and the diameter of the left atrium just above the mitral annulus ( La ama ) as well as the ratio of left atrial to aortic diameter ( La/Ao ) were measured by 2DE. The La r−l / La ama ratio was independent of body weight (R 2 = 0.0006) and age (R 2 = 0.0012), respectively. A significant linear relationship was found between La ama and La/Ao (the ratio that expresses the severity of atrial enlargement): La ama = 1.2238 La/Ao + 1.1608 (R 2 = 021; P < 0.01). There was also a positive linear relationship between La r−l and La/Ao : La r−l = 1.6876 La/Ao + 1.2648 (R 2 = 0.27; P < 0.005). In our dogs with cardiac disease, the La r−l / La ama ratio showed no significant relation to the La/Ao index (R 2 = 0.028). Thus, La r−l / La ama proved to be independent of the severity of atrial enlargement. Based on the strong relationship stated in the equation between La ama and La r−l [ La r−l / La ama = 1.31159 (95% confidence interval)], La ama can also be used for the assessment of left atrial size even in dogs with cardiac disease.

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Editor(s)-in-Chief: Benkő, Mária

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Editorial Board

      Dénes, Béla
      Eszterbauer, Edit
      Fébel, Hedvig
      Fodor, László
      Harrach, Balázs
      Andras Komaromy (USA)
      Peter Massanyi (Slovak Republic)
      Nagy, Béla
      Németh, Tibor
      Neogrády, Zsuzsanna
      Kurt Pfister (Germany)
      Solti, László
      Szabó, József
      Vajdovich, Péter
      Varga, János
      Štefan, Vilĉek (Slovak Republic)
      Vörös, Károly
      Herbert Weissenböck (Austria)
      Zsarnovszky, Attila

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