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Echocardiographic evaluation of the left atrium of healthy dogs using the conventional M-mode and the bidimensional mode

Authors
  • Prada, D. G.
  • Oliveira, V. M. C.
  • Larsson, M. H. M. A.
  • Yamaki, F. L.
Publication Date
Jan 01, 2012
Source
Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI USP)
Keywords
Language
Portuguese
License
Unknown
External links

Abstract

The left atrium (LA) was evaluated through the bidimensional method (2-D) (short axis) and the relation left atrium:aorta (LA:Ao) in a group of 40 healthy adult dogs between 1.5 and 7 years of age and weights ranging from 3.2 to 38.3kg, and these values were compared to those in the conventional M-mode. Comparing the variable LA and Ao with the two methods and their respective indexes, significant statistical difference was observed (P<0,001), high positive correlation between the weight and LA-2D and LAM, between body surface and LA-2D and LAM. A difference between LA and Ao in both methods and these respective indicators were observed. The association was higly positive between weight and body surface area (BSA) and between M- mode LA (LAM) and 2-D mode LA (LA-2D). No correlation was observed between these indicators and weight and BSA, in both methods, so these indicators are weight and BSA-independent. Conclusions: LA-2D is bigger than LAM, the LA-2D: Ao-2D average index is 1,379 and the confidence interval is 1,337 to 1,422. The index in the 2-D method is, therefore, superior to the index in the M-mode.

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