Comparison of prednisolone and dexamethasone effects in the presence of environmental control in heaves-affected horses.

The paper investigates and compares the effectiveness of prednisolone and dexamethasone, two types of medications, in treating horses affected by heaves, a chronic respiratory disease, alongside environmental control.

Research Objective and Design

• The study’s primary goal was to evaluate and contrast the efficacy of prednisolone taken orally and intramuscular (IM) dexamethasone in treating horses affected with heaves, in conjunction with environmental control.
• To carry out the research, a total of 16 horses aged between 8 to 20 years and suffering from heaves were included in the study.
• This study comprised three examination stages: initial examination (Day 0), an intermediary check (Day 13), and a final assessment (Day 30).

Procedure and Parameters Assessed

• The horses were divided into two groups randomly. One group received oral prednisolone (1mg/kg), and the other received intramuscular dexamethasone (0.1mg/kg).
• A series of examinations and assessments were undertaken. These included clinical variables, arterial blood gases, mucus scoring, evaluation of the carina (part of the bronchiole) during endoscopy, and analysis of bronchoalveolar lavage (BAL) cytology to check for inflammation in the lungs.

Results Analysis

• Results were evaluated using a repeated measures ANOVA (Analysis of Variance), a statistical method used when the same entity is measured multiple times to determine differences between means. The study’s main focus aspects were time (number of treatment days) and the type of treatment administered (prednisolone or dexamethasone).

Findings

• Both prednisolone and dexamethasone, when used with environmental control, displayed similar effects on the heaves score, blood gases, and endoscopic scores.
• However, dexamethasone proved more effective in managing bronchoalveolar lavage (BAL) cytology, suggesting a more beneficial impact on lung inflammation.