[Precision-controlled echocardiographic left ventricular function parameters by repeated measurement on three consecutive days in trained and untrained warmblood horses].

The research investigated the reliability of echocardiographic measurements in detecting changes in left ventricular function in horses, assessed over three consecutive days. Comparisons were made between trained and untrained warmblood horses. It was found that the echocardiographic measurements were reproducible with a variation between 3.4 and 25.8% and there were significant differences in some parameters between trained and untrained horses.

Echocardiographic Measurements in Horses

• The study focused on analyzing echocardiographic parameters in 18 warmblood horses – 11 untrained and 7 trained. This non-invasive diagnostic tool was used to evaluate the function of the left ventricle in the horses’ hearts.
• Echocardiographic measurements were taken over a period of three days at identical times and by the same examiner. This enabled the researchers to evaluate the day-to-day variability of the measurements.
• The variation between measurements over three days and within the horses (day to day intraindividual variation), as well as the variation between different horses (interindividual variation), was considered to determine the precision of echocardiographic parameters.

Reproducibility of Echocardiographic Measurements

• The researchers found good reproducibility with the coefficient of variation ranging from 3.4 to 25.8%. This reproducibility is important in medical diagnostics to ensure that the results of repeated measurements are consistent and accurate.
• The left ventricular diastolic diameter at the level of the papillary muscles showed the lowest variation between repeated measurements on different days, indicating high precision in the measurement of this particular parameter.
• On the other hand, the heart rate demonstrated the highest variation with 53.8% between repeated measurements over different days, suggesting comparatively lower precision in this measurement.

Differences between Trained and Untrained Horses

• The study also examined differences in the echocardiographic parameters between trained and untrained horses.
• Significant differences were found in the left ventricular diameter at the level of the apex cordis and under the mitral valves, as well as in the systolic left ventricular area. These differences suggest that training level can influence specific echocardiographic measurements.