Prognosis in equine colic: a comparative study of variables used to assess individual cases.

This research provides a comparative study of different factors to predict the prognosis of equine colic in horses. The most effective indicators were those related to cardiovascular function, with systolic pressure, blood lactate concentration, blood urea concentration, and haematocrit proving most accurate in predicting outcomes.

Objective of the Study

• The main purpose of this retrospective study was to objectively compare the prognostic value of various variables routinely used in diagnosing cases of equine colic.
• The researchers set out to identify which of these variables provided an accurate correlation to the outcomes of the cases, specifically distinguishing between survival and death.

Key Findings

• The best prognostic variables were those related to the integrity of cardiovascular function.
• In decreasing order of importance, the variables found to be the most indicative of outcome were: systolic pressure, blood lactate concentration, oral mucous membrane capillary refill time, diastolic pressure, arterial pulse amplitude, mental depression, blood urea concentration, haematocrit, heart rate, haematocrit/plasma protein ratio, oral mucous membrane color, jugular filling rate, frequency of gut sounds, differential blood leucocyte count, blood glucose concentration, and respiratory rate.

Effectiveness of the Variables

• By evaluating the systolic pressure alone, the survival or death outcome of 86% of the cases (64 out of 73) were accurately classified.
• When the systolic pressure, blood lactate concentration, blood urea concentration and haematocrit were assessed together, the classification accuracy increased to 93% (68 of 73).

Implication of the Results

• The study provides a clear indication of the variables that carry significant prognostic value in cases of equine colic.
• The results of this research could help to establish standardized guidelines for identifying, evaluating, and managing cases of equine colic, leading to more accurate prognosis and potentially greater survival rates.

Conclusion

• Outcome classification formulae for these four variables, alone and in all combinations, were presented, providing a practical tool for equine practitioners to improve the prognosis accuracy in equine colic cases.