Evaluation of vasovagal tonus index and electrocardiographic parameters in horses using a new modified base apex lead method.

Background And Aim: Vasovagal tonus index (VVTI) serves as a straightforward assessment tool for autonomic function during both physiological and pathological conditions, including pregnancy, in horses. Obtaining VVTI through a modified base apex lead system could be a practical and comfortable solution. In this study, we assessed VVTI in horses with respect to training status and electrocardiographic measurements utilizing a novel modified base apex lead technique.

Effects of pregnancy on electrocardiographic, vasovagal tonus index, and echocardiographic variables in horses.

Background And Aim: Pregnancy affects maternal hemodynamics. The changes in autonomic nervous system activity for hemodynamics adaptation in pregnant horses are still unclear. Thus, this study aimed to examine the effect of pregnancy on electrocardiographic, vasovagal tonus index, and echocardiographic variables in horses.

The position of ground electrode affects electrocardiographic parameters in horses.

Background And Aim: Improper attachment of the grounding lead is one of the artifacts and causes difficulty in interpretation of ECG. This study aimed to examine the effects of the position of a ground electrode on electrocardiographic (ECG) parameters in horses.

Materials And Methods: Sixteen Arabian horses without any cardiac problems were included in this study.