Clinical predictors of heart failure in sports horses
Abstract
The results of the research showed that heart rate, capillary filling time and skin elasticity can serve as clinical tests for assessing the functional state of the cardiovascular system in horses after exercise and for diagnosing heart failure in animals.
In heart failure, capillary filling time in horses increased to 3 or more seconds (4% of horses 30 minutes after the end of exercise), the mucous membranes acquired a red color with a cyanotic shade (6 % of horses 30 minutes after the end of exercise). Reduction of skin elasticity is established in 2 % of horses.
Since the cardiovascular system in horses has significant compensatory capabilities, it is therefore necessary to assess the functional state after a load when the disease manifests itself clinically. Recovering heart rate is one of the main criteria that is evaluated in athletic horses after physical exertion.
The physical load of medium intensity and recovery of heart rate allowed to identify horses with heart failure. After the end of the test, tachycardia was recorded in 10 % of horses (> 64 beats/min), after 10 minutes – 6 % (> 50 beats/min) and in 30 minutes - in 4 % (> 47 beats/min) of animals.
Keywords: predictors, horses, heart failure, heart rate, capillary refill time, exercise
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