Repeatability of standard transthoracic echocardiographic measurements in horses.

The research is about evaluating the consistency of standard transthoracic echocardiographic measurements conducted on horses over a period of three days.

Objective and Methodology

• The study’s main aim was to examine the repeatability of standard transthoracic echocardiographic measurements on standing horses. This involved checking the consistency of these measurements taken over three consecutive days.
• The subjects of the study were thirteen healthy Standardbred geldings aged three to four years and weighing around 411kg (+/- 10kg).
• To ensure consistent conditions for the study, all aspects of the horses’ environment, feeding, and management systems were standardized.
• To eliminate the possible impact of examiner bias, all measurements were performed by the same investigator, at the same time each day, for three consecutive days.
• The transthoracic echocardiographic measurements were made using standard methods over three consecutive heart cycles for each horse. The data were recorded and analyzed.

Analysis and Results

• The study used an analysis of variance with repeated measures factor to compare the summary statistics of each day. This test is used to determine the presence of any statistical differences over time among repeated measures.
• The statistical significance was set at P < 0.05, which indicates that the probability is less than 5% that the observed results are due to mere chance.
• The results show a low intra-observer variability in many standard echocardiographic measurements over the course of three days, ensuring the reliability of these measurements. This supports the repeatability of quantitative and functional information collected about the equine heart using standard echocardiography measurements.