Clinicopathologic evidence of myocardial injury in horses with acute abdominal disease.

This research article aims to discern whether horses with acute abdominal disease exhibit signs of heart injury. It identifies potential correlations between this heart injury, known as myocardial injury, and the severity of the horse’s illness.

Research Method

• The researchers carried out a prospective case series involving 18 healthy horses and 69 horses suffering from acute abdominal disease.
• The 18 healthy horses, referred to as group 1, were admitted for investigation. They formed the control group for the study.
• The horses diagnosed with acute abdominal disease were divided into three groups: the ‘strangulating obstruction’ group, ‘nonstrangulating obstruction’ group, and the ‘inflammatory disease’ group, earning them the labels of groups 2, 3, and 4, respectively.
• At the initial examination, several factors were measured – heart rate, Hematocrit (Hct), blood lactate, and cardiac troponin I (cTnI) concentrations. The cardiac troponin I (cTnI) factor is an indicator of heart tissue damage.
• In addition to this, myocardial (heart muscle) function was evaluated using an echocardiogram, which measured ‘fractional shortening’ and ‘left ventricular ejection time (LVET)’, two physiological events associated with heart activity.
• The researchers also studied the heart rhythm through an electrocardiogram (ECG).

Results

• There was a significant increase in the percentage of horses with high cTnI concentration (greater than 0.03 ng/mL) in the strangulating (9 out of 25) and inflammatory (9 out of 19) groups when compared to healthy horses (none out of 18).
• In addition, there was a higher proportion of horses with raised cTnI concentration in the non-survivor group (12 out of 24) compared to the survivor group (10 out of 45).
• The study found a positive correlation between serum cTnI concentration and Hct, heart rate, and blood lactate concentration, while a negative correlation was found with LVET.

Conclusion

• The research provided evidence of myocardial injury in horses with acute abdominal disease. Furthermore, the severity of this injury was linked to the severity of illness in the horse.
• This discovery holds potential for improving treatment of acute abdominal diseases in horses. Early detection of myocardial injury could aid in mitigating the implications of these abdominal diseases.