Method of selective and non-selective angiocardiography for the horse.

This research describes a practical, safe method of angiocardiography for horses, detailing techniques that capture images of the heart and major blood vessels through a quick injection of a contrasting agent. The method was satisfactorily tested on 10 healthy horses and one foal with severe congenital heart disease, all of which resulted in no harm or significant side effects.

Methodology

• The research revolves around a specific angiocardiography method designed for horses, which incorporates the rapid injection of a contrast agent ranging from 50 to 150 ml. This contrast agent is administered via catheters inserted in the horse’s right and left heart, pulmonary artery, and aorta.
• The angiocardiography can be performed either with the horse standing upright or under general anaesthesia. The choice of position is likely dependent on the specific requirements of the examination and the horse’s comfort.
• The research team conducted this test on 10 healthy horses to determine the technique’s effectiveness and safety. These tests resulted in satisfactory images of the right and left ventricles, pulmonary arteries, aorta, and coronary circulation in each of these horses.

Recording and Safety Measures

• The team relied on cinefilm or video taperecording as the primary recording methods when the horse was standing. For the recumbent or lying down position, the team utilized both cinefilm and radiographs for recording purposes.
• There were no indications of catheters inducing any damage to the heart. Moreover, the pressure caused by the injection triggered less than five ventricular premature contractions, suggesting that the risks associated with the technique are minimal.
• There were no signs of toxicity even when using repeated injections of contrast material, with utilization under 600 ml noted as safe in the research.

Test with Diseased Foal

• Apart from testing this technique on healthy horses, the team also applied it to a foal suffering from severe congenital heart disease. This allowed the researchers to observe the effectiveness and safety of the method under more complex conditions.

Conclusion

• Overall, this research offers important insight into a novel angiocardiography technique for horses that is both safe and practical. Given its success in providing satisfactory images and avoiding major side effects or damage, this method presents substantial potential for use in veterinary medicine.