Cardiac Mean Electrical Axis in Thoroughbreds-Standardization by the Dubois Lead Positioning System.

ABSTRACT:

Background

Different methodologies for electrocardiographic acquisition in horses have been used since the first ECG recordings in equines were reported early in the last century. This study aimed to determine the best ECG electrodes positioning method and the most reliable calculation of mean cardiac axis (MEA) in equines.

Materials and methods

We evaluated the electrocardiographic profile of 53 clinically healthy Thoroughbreds, 38 males and 15 females, with ages ranging 2-7 years old, all reared at the São Paulo Jockey Club, in Brazil. Two ECG tracings were recorded from each animal, one using the Dubois lead positioning system, the second using the base-apex method. QRS complex amplitudes were analyzed to obtain MEA values in the frontal plane for each of the two electrod

SUBMITTER: da Costa CF 

PROVIDER: S-EPMC5241011 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature